Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 661 prefixes
674 of the 786 possible NXX blocks are assigned in area code 661 (85.8% of capacity), spread across 32 rate centers and 52 holders. The largest holders are PACIFIC BELL (144 blocks, 21.4%), NEW CINGULAR WIRELESS PCS, LLC (75 blocks, 11.1%), T-MOBILE USA, INC. (55 blocks, 8.2%). Grouped by brand, AT&T accounts for 242 blocks; brand-attributable holders cover 90% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-07 to 2026-09-25, with 21 blocks handed out in 2020 alone. 531 blocks (79%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 6 assigned blocks (693, 696, 697, 850, 880, 991) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 165 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
674 assigned blocks of 786
32 rate centers
52 holders of record
79% in thousands-block pooling
Largest holders in 661
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| PACIFIC BELL | AT&T | 144 | 21.4% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 75 | 11.1% |
| T-MOBILE USA, INC. | T-Mobile | 55 | 8.2% |
| ONVOY, LLC - CA | Onvoy | 51 | 7.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 50 | 7.4% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 35 | 5.2% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 29 | 4.3% |
| FRONTIER CALIFORNIA INC. | Frontier | 29 | 4.3% |
| METROPCS NETWORKS, LLC | T-Mobile | 19 | 2.8% |
| METROPCS, INC. | T-Mobile | 18 | 2.7% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 17 | 2.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 14 | 2.1% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
BKFD MAIN 150PLDL PLDL 96SNCA NHCS 67LANCASTER 56BKFD SOUTH 50SNCA SGCC 29BKFD NORTH 29DELANO 23ARVIN 22EDWARDS 13TEHACHAPI 13TAFT 11MOJAVE 9PLDL AGDL 8LEBEC 8SHAFTER 8WASCO 8MCFARLAND 8HI VISTA 7ROSAMOND 7LAKEHUGHES 7BIG BUTTE 6PLDL LNVY 6EARLIMART 6WALKERBSIN 5BUTTONWLLW 4LOST HILLS 3CUYAMA 3BERENDMESA 3CLFRNHTSPG 3GLENNVILLE 3MCKITTRICK 3
All 674 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 661-200 | AT&T | SNCA NHCS | 2007-11-28 | yes | yes |
| 661-201 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-202 | Lumen | PLDL PLDL | – | yes | yes |
| 661-203 | Verizon | BKFD MAIN | – | – | yes |
| 661-204 | AT&T | BKFD MAIN | – | – | yes |
| 661-205 | AT&T | BKFD MAIN | – | – | yes |
| 661-206 | Windstream | LANCASTER | – | yes | yes |
| 661-207 | UTILITY TELECOM GROUP, LLC - CA | SNCA NHCS | – | yes | yes |
| 661-208 | Verizon | PLDL PLDL | 2007-01-17 | yes | yes |
| 661-209 | T-Mobile | PLDL AGDL | 2002-02-11 | yes | yes |
| 661-210 | AT&T | SNCA NHCS | – | yes | yes |
| 661-212 | T-Mobile | SNCA SGCC | 2002-02-11 | yes | yes |
| 661-213 | T-Mobile | BKFD NORTH | 2002-02-11 | yes | yes |
| 661-214 | Lumen | LOST HILLS | – | yes | yes |
| 661-215 | Onvoy | BKFD NORTH | – | yes | yes |
| 661-216 | American Messaging | LANCASTER | – | – | yes |
| 661-217 | American Messaging | BUTTONWLLW | – | – | yes |
| 661-218 | BHN IP ENABLED SERVICES, LLC | BKFD NORTH | 2017-07-19 | yes | yes |
| 661-219 | Verizon | SNCA NHCS | – | yes | yes |
| 661-220 | T-Mobile | ARVIN | 2002-01-16 | yes | yes |
| 661-221 | T-Mobile | MOJAVE | 2002-01-16 | yes | yes |
| 661-222 | AT&T | SNCA NHCS | – | yes | yes |
| 661-223 | AT&T | PLDL PLDL | – | – | yes |
| 661-224 | AT&T | PLDL PLDL | – | – | yes |
| 661-225 | AT&T | PLDL PLDL | – | yes | yes |
| 661-226 | American Messaging | ARVIN | – | – | yes |
| 661-227 | T-Mobile | PLDL PLDL | 2016-10-10 | yes | yes |
| 661-228 | Onvoy | HI VISTA | – | yes | yes |
| 661-229 | AT&T | DELANO | – | yes | yes |
| 661-230 | Bandwidth | EDWARDS | – | yes | yes |
| 661-231 | Bandwidth | LEBEC | – | yes | yes |
| 661-232 | T-Mobile | MOJAVE | – | yes | yes |
| 661-233 | AT&T | PLDL PLDL | – | yes | yes |
| 661-234 | T-Mobile | PLDL PLDL | – | yes | yes |
| 661-235 | Bandwidth | ROSAMOND | – | yes | yes |
| 661-236 | AT&T | PLDL PLDL | – | yes | yes |
| 661-237 | Bandwidth | SHAFTER | – | yes | yes |
| 661-238 | Bandwidth | TEHACHAPI | – | yes | yes |
| 661-239 | Bandwidth | WALKERBSIN | – | yes | yes |
| 661-240 | IP HORIZON LLC | WASCO | – | yes | yes |
| 661-241 | Bandwidth | BKFD SOUTH | – | yes | yes |
| 661-242 | AT&T | LEBEC | – | yes | yes |
| 661-243 | Bandwidth | BKFD NORTH | – | yes | yes |
| 661-244 | Onvoy | SNCA NHCS | – | yes | yes |
| 661-245 | AT&T | LEBEC | – | yes | yes |
| 661-246 | AT&T | BKFD MAIN | – | yes | yes |
| 661-247 | T-Mobile | ARVIN | – | yes | yes |
| 661-248 | AT&T | LEBEC | – | yes | yes |
| 661-249 | Bandwidth | BIG BUTTE | – | yes | yes |
| 661-250 | AT&T | SNCA SGCC | – | yes | yes |
| 661-251 | AT&T | SNCA SGCC | – | – | yes |
| 661-252 | AT&T | SNCA SGCC | – | – | yes |
| 661-253 | AT&T | SNCA NHCS | – | – | yes |
| 661-254 | AT&T | SNCA NHCS | – | – | yes |
| 661-255 | AT&T | SNCA NHCS | – | – | yes |
| 661-256 | AT&T | ROSAMOND | – | – | yes |
| 661-257 | AT&T | SNCA NHCS | – | – | yes |
| 661-258 | AT&T | EDWARDS | – | yes | yes |
| 661-259 | AT&T | SNCA NHCS | – | – | yes |
| 661-260 | AT&T | SNCA NHCS | – | – | yes |
| 661-261 | AT&T | BIG BUTTE | – | yes | yes |
| 661-262 | IP HORIZON LLC | LAKEHUGHES | – | yes | yes |
| 661-263 | AT&T | SNCA SGCC | – | yes | yes |
| 661-264 | AT&T | PLDL PLDL | – | yes | yes |
| 661-265 | AT&T | PLDL PLDL | – | yes | yes |
| 661-266 | AT&T | PLDL PLDL | – | – | yes |
| 661-267 | AT&T | PLDL PLDL | – | – | yes |
| 661-268 | AT&T | PLDL AGDL | – | yes | yes |
| 661-269 | AT&T | PLDL PLDL | – | yes | yes |
| 661-270 | AT&T | PLDL LNVY | – | yes | yes |
| 661-271 | Lumen | MOJAVE | – | yes | yes |
| 661-272 | AT&T | PLDL PLDL | – | – | yes |
| 661-273 | AT&T | PLDL PLDL | – | – | yes |
| 661-274 | AT&T | PLDL PLDL | – | – | yes |
| 661-275 | AT&T | EDWARDS | – | – | yes |
| 661-276 | AT&T | EDWARDS | – | yes | yes |
| 661-277 | AT&T | EDWARDS | – | – | yes |
| 661-278 | Lumen | EDWARDS | – | yes | yes |
| 661-279 | Lumen | ROSAMOND | – | yes | yes |
| 661-280 | UTILITY TELECOM GROUP, LLC - CA | PLDL LNVY | – | – | yes |
| 661-281 | Verizon | BKFD MAIN | – | yes | yes |
| 661-282 | Verizon | BKFD SOUTH | – | yes | yes |
| 661-283 | Verizon | BKFD MAIN | – | yes | yes |
| 661-284 | AT&T | SNCA NHCS | – | – | yes |
| 661-285 | AT&T | PLDL PLDL | – | – | yes |
| 661-286 | AT&T | SNCA NHCS | – | yes | yes |
| 661-287 | AT&T | SNCA NHCS | – | – | yes |
| 661-288 | AT&T | SNCA NHCS | – | – | yes |
| 661-289 | AT&T | LEBEC | – | yes | yes |
| 661-290 | AT&T | SNCA NHCS | – | – | yes |
| 661-291 | AT&T | SNCA NHCS | – | – | yes |
| 661-292 | T-Mobile | SHAFTER | 2002-01-16 | yes | yes |
| 661-293 | T-Mobile | TAFT | 2002-01-16 | yes | yes |
| 661-294 | AT&T | SNCA NHCS | – | – | yes |
| 661-295 | AT&T | SNCA NHCS | – | – | yes |
| 661-296 | AT&T | SNCA SGCC | – | – | yes |
| 661-297 | AT&T | SNCA SGCC | – | – | yes |
| 661-298 | AT&T | SNCA SGCC | – | yes | yes |
| 661-299 | AT&T | SNCA SGCC | – | yes | yes |
| 661-300 | T-Mobile | TEHACHAPI | 2002-01-16 | yes | yes |
| 661-301 | AT&T | BKFD MAIN | – | – | yes |
| 661-302 | Lumen | BKFD MAIN | 2005-06-03 | yes | yes |
| 661-303 | AT&T | BKFD MAIN | – | – | yes |
| 661-304 | AT&T | BKFD MAIN | – | – | yes |
| 661-305 | Verizon | PLDL PLDL | – | – | yes |
| 661-306 | Lumen | LAKEHUGHES | – | yes | yes |
| 661-307 | American Messaging | BKFD MAIN | – | – | yes |
| 661-308 | CSC WIRELESS, LLC | BKFD MAIN | 2020-02-13 | yes | yes |
| 661-309 | Verizon | SNCA SGCC | – | yes | yes |
| 661-310 | Lumen | SNCA NHCS | – | yes | yes |
| 661-312 | T-Mobile | SNCA NHCS | – | yes | yes |
| 661-313 | T-Mobile | SNCA SGCC | – | yes | yes |
| 661-314 | T-Mobile | BKFD MAIN | 2016-11-14 | yes | yes |
| 661-315 | AT&T | PLDL PLDL | 2020-02-18 | yes | yes |
| 661-316 | Verizon | BKFD MAIN | – | yes | yes |
| 661-317 | T-Mobile | PLDL PLDL | 2001-12-14 | – | yes |
| 661-318 | 33 WIRELESS INC. | BKFD MAIN | – | – | yes |
| 661-319 | AT&T | BKFD MAIN | – | – | yes |
| 661-320 | Lumen | LEBEC | – | yes | yes |
| 661-321 | AT&T | BKFD MAIN | – | yes | yes |
| 661-322 | AT&T | BKFD MAIN | – | – | yes |
| 661-323 | AT&T | BKFD MAIN | – | – | yes |
| 661-324 | AT&T | BKFD MAIN | – | – | yes |
| 661-325 | AT&T | BKFD MAIN | – | – | yes |
| 661-326 | AT&T | BKFD MAIN | – | – | yes |
| 661-327 | AT&T | BKFD MAIN | – | – | yes |
| 661-328 | AT&T | BKFD MAIN | – | – | yes |
| 661-329 | Spok | BKFD MAIN | – | – | yes |
| 661-330 | AT&T | BKFD MAIN | – | – | yes |
| 661-331 | AT&T | BKFD MAIN | – | – | yes |
| 661-332 | AT&T | BKFD MAIN | – | – | yes |
| 661-333 | AT&T | BKFD MAIN | – | – | yes |
| 661-334 | AT&T | BKFD MAIN | – | yes | yes |
| 661-335 | AT&T | BKFD MAIN | – | yes | yes |
| 661-336 | AT&T | BKFD MAIN | – | yes | yes |
| 661-337 | AT&T | BKFD MAIN | – | yes | yes |
| 661-338 | Lumen | LAKEHUGHES | – | yes | yes |
| 661-339 | Lumen | HI VISTA | – | yes | yes |
| 661-340 | AT&T | BKFD MAIN | 2002-02-15 | yes | yes |
| 661-341 | AT&T | LANCASTER | – | yes | yes |
| 661-342 | Verizon | BKFD MAIN | – | – | yes |
| 661-343 | T-Mobile | BKFD MAIN | 2001-05-21 | yes | yes |
| 661-344 | T-Mobile | EARLIMART | – | yes | yes |
| 661-345 | AT&T | BKFD MAIN | – | – | yes |
| 661-346 | T-Mobile | BKFD MAIN | 2007-04-12 | yes | yes |
| 661-347 | Lumen | SNCA SGCC | 2002-02-20 | yes | yes |
| 661-348 | BHN IP ENABLED SERVICES, LLC | BKFD MAIN | 2007-05-07 | yes | yes |
| 661-349 | Lumen | PLDL PLDL | 2002-02-20 | yes | yes |
| 661-350 | AT&T | PLDL PLDL | 2003-01-09 | yes | yes |
| 661-351 | UTILITY TELECOM GROUP, LLC - CA | LAKEHUGHES | – | yes | yes |
| 661-352 | UTILITY TELECOM GROUP, LLC - CA | EDWARDS | – | yes | yes |
| 661-353 | UTILITY TELECOM GROUP, LLC - CA | LANCASTER | – | yes | yes |
| 661-354 | UTILITY TELECOM GROUP, LLC - CA | BKFD MAIN | – | yes | yes |
| 661-355 | UTILITY TELECOM GROUP, LLC - CA | ROSAMOND | – | yes | yes |
| 661-356 | UTILITY TELECOM GROUP, LLC - CA | MOJAVE | – | yes | yes |
| 661-357 | UTILITY TELECOM GROUP, LLC - CA | TEHACHAPI | – | yes | yes |
| 661-358 | UTILITY TELECOM GROUP, LLC - CA | TAFT | – | yes | yes |
| 661-359 | UTILITY TELECOM GROUP, LLC - CA | DELANO | – | yes | yes |
| 661-360 | AT&T | SNCA SGCC | 2003-01-13 | yes | yes |
| 661-361 | Windstream | PLDL PLDL | – | yes | yes |
| 661-362 | Windstream | SNCA NHCS | – | yes | yes |
| 661-363 | AT&T | BKFD MAIN | – | yes | yes |
| 661-364 | AT&T | BKFD MAIN | – | yes | yes |
| 661-365 | T-Mobile | PLDL PLDL | 2016-05-24 | yes | yes |
| 661-366 | AT&T | BKFD MAIN | – | – | yes |
| 661-367 | Windstream | SNCA SGCC | – | yes | yes |
| 661-368 | AT&T | BKFD NORTH | 2007-06-11 | yes | yes |
| 661-369 | Verizon | BKFD MAIN | 2007-09-15 | yes | yes |
| 661-370 | Lumen | DELANO | – | yes | yes |
| 661-371 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-372 | Bandwidth | DELANO | 2014-04-07 | yes | yes |
| 661-373 | T-Mobile | SNCA NHCS | 2001-12-14 | – | yes |
| 661-374 | Onvoy | BKFD MAIN | 2007-12-21 | yes | yes |
| 661-375 | Verizon | DELANO | – | yes | yes |
| 661-376 | Bandwidth | BKFD MAIN | 2008-04-02 | yes | yes |
| 661-377 | TPx | BKFD MAIN | 2002-10-11 | yes | yes |
| 661-378 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-379 | Bandwidth | BKFD MAIN | 2009-04-28 | yes | yes |
| 661-380 | RACE TELECOMMUNICATIONS, INC. - CA | BKFD MAIN | 2009-04-28 | yes | yes |
| 661-381 | TPx | BKFD SOUTH | 2009-05-21 | yes | yes |
| 661-382 | Bandwidth | PLDL PLDL | 2001-09-23 | yes | yes |
| 661-383 | AT&T | SNCA NHCS | 2015-02-17 | yes | yes |
| 661-384 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-385 | AT&T | EDWARDS | 2010-03-12 | yes | yes |
| 661-386 | Charter | ROSAMOND | 2016-09-26 | yes | yes |
| 661-387 | AT&T | BKFD NORTH | – | yes | yes |
| 661-388 | Charter | SNCA NHCS | 2010-08-16 | yes | yes |
| 661-389 | AT&T | PLDL PLDL | 2024-02-20 | yes | yes |
| 661-390 | TPx | ARVIN | 2006-12-14 | yes | yes |
| 661-391 | AT&T | BKFD NORTH | – | – | yes |
| 661-392 | AT&T | BKFD NORTH | – | – | yes |
| 661-393 | AT&T | BKFD NORTH | – | – | yes |
| 661-394 | AT&T | BKFD MAIN | – | yes | yes |
| 661-395 | AT&T | BKFD MAIN | – | – | yes |
| 661-396 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-397 | AT&T | BKFD SOUTH | – | – | yes |
| 661-398 | AT&T | BKFD SOUTH | – | – | yes |
| 661-399 | AT&T | BKFD NORTH | – | – | yes |
| 661-400 | AT&T | PLDL PLDL | – | – | yes |
| 661-401 | Verizon | BKFD MAIN | 2010-08-11 | yes | yes |
| 661-402 | T-Mobile | PLDL AGDL | 2011-02-04 | yes | yes |
| 661-403 | T-Mobile | PLDL PLDL | 2017-01-16 | yes | yes |
| 661-404 | Telnyx | BKFD MAIN | 2016-12-15 | yes | yes |
| 661-405 | AT&T | LANCASTER | 2017-08-01 | yes | yes |
| 661-406 | AT&T | PLDL PLDL | – | – | yes |
| 661-407 | TERRA NOVA TELECOM INC. | BKFD MAIN | – | yes | yes |
| 661-409 | T-Mobile | PLDL PLDL | 2017-06-30 | yes | yes |
| 661-410 | TPx | BKFD NORTH | 2001-03-01 | yes | yes |
| 661-412 | AT&T | BKFD SOUTH | 2008-04-02 | yes | yes |
| 661-413 | Bandwidth | CUYAMA | – | yes | yes |
| 661-414 | Lumen | SNCA NHCS | – | yes | yes |
| 661-416 | T-Mobile | ARVIN | 2016-08-29 | yes | yes |
| 661-417 | T-Mobile | SNCA NHCS | 2017-06-30 | yes | yes |
| 661-418 | T-Mobile | LANCASTER | 2012-02-24 | yes | yes |
| 661-419 | SHELCOMM | HI VISTA | 2018-07-31 | – | yes |
| 661-420 | Lumen | CUYAMA | – | yes | yes |
| 661-421 | T-Mobile | BKFD MAIN | 2015-03-09 | yes | yes |
| 661-422 | Bandwidth | PLDL LNVY | – | yes | yes |
| 661-423 | Frontier | LANCASTER | – | – | yes |
| 661-424 | AT&T | SNCA SGCC | – | yes | yes |
| 661-425 | Bandwidth | SNCA NHCS | 2014-03-21 | yes | yes |
| 661-426 | Onvoy | BKFD MAIN | 2013-01-14 | yes | yes |
| 661-427 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-428 | Verizon | BKFD MAIN | 2001-02-09 | – | yes |
| 661-429 | T-Mobile | LANCASTER | 2012-09-24 | yes | yes |
| 661-430 | Lumen | SNCA SGCC | – | yes | yes |
| 661-431 | TPx | BKFD MAIN | 2005-05-16 | yes | yes |
| 661-432 | Verizon | BKFD MAIN | 2012-08-30 | yes | yes |
| 661-433 | Verizon | PLDL PLDL | – | – | yes |
| 661-434 | Verizon | PLDL PLDL | 2011-11-11 | yes | yes |
| 661-435 | AT&T | PLDL PLDL | – | – | yes |
| 661-436 | AT&T | ARVIN | 2009-12-14 | yes | yes |
| 661-437 | T-Mobile | BKFD MAIN | 2012-08-28 | yes | yes |
| 661-438 | Lumen | WASCO | – | yes | yes |
| 661-439 | T-Mobile | BKFD MAIN | 2018-08-16 | yes | yes |
| 661-440 | T-Mobile | BKFD MAIN | 2014-04-18 | yes | yes |
| 661-441 | Lumen | PLDL PLDL | 2013-02-01 | yes | yes |
| 661-442 | SHELCOMM | SNCA NHCS | 2004-08-12 | – | yes |
| 661-443 | Onvoy | WALKERBSIN | – | yes | yes |
| 661-444 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-445 | T-Mobile | LANCASTER | 2014-10-14 | yes | yes |
| 661-446 | AT&T | DELANO | 2012-08-07 | yes | yes |
| 661-447 | T-Mobile | BKFD MAIN | 2013-12-09 | yes | yes |
| 661-448 | NUSO, LLC | BKFD MAIN | 2012-11-06 | yes | yes |
| 661-449 | Onvoy | PLDL PLDL | – | yes | yes |
| 661-450 | Lumen | PLDL AGDL | – | yes | yes |
| 661-451 | Onvoy | ARVIN | – | yes | yes |
| 661-452 | Telnyx | BERENDMESA | – | yes | yes |
| 661-453 | Lumen | CLFRNHTSPG | – | yes | yes |
| 661-454 | BHN IP ENABLED SERVICES, LLC | DELANO | – | yes | yes |
| 661-455 | Lumen | GLENNVILLE | – | yes | yes |
| 661-456 | Lumen | PLDL PLDL | – | yes | yes |
| 661-457 | TERRA NOVA TELECOM INC. | LOST HILLS | – | yes | yes |
| 661-458 | Lumen | MCFARLAND | – | yes | yes |
| 661-459 | Onvoy | SHAFTER | – | yes | yes |
| 661-460 | Lumen | WALKERBSIN | – | yes | yes |
| 661-461 | Lumen | LEBEC | – | yes | yes |
| 661-462 | Onvoy | BIG BUTTE | – | yes | yes |
| 661-463 | Onvoy | HI VISTA | – | yes | yes |
| 661-464 | Onvoy | LAKEHUGHES | – | yes | yes |
| 661-465 | Frontier | BERENDMESA | – | yes | yes |
| 661-466 | Onvoy | LANCASTER | – | yes | yes |
| 661-467 | Onvoy | SNCA SGCC | – | – | yes |
| 661-468 | IP HORIZON LLC | PLDL AGDL | – | yes | yes |
| 661-469 | BHN IP ENABLED SERVICES, LLC | BUTTONWLLW | – | yes | yes |
| 661-470 | AT&T | LANCASTER | 2014-06-09 | yes | yes |
| 661-471 | Lumen | LANCASTER | 2013-02-01 | yes | yes |
| 661-472 | T-Mobile | BKFD MAIN | 2001-12-14 | – | yes |
| 661-473 | Bandwidth | BKFD SOUTH | 2013-01-29 | yes | yes |
| 661-474 | Verizon | DELANO | 2010-03-05 | yes | yes |
| 661-475 | Onvoy | EDWARDS | – | yes | yes |
| 661-476 | Verizon | SNCA NHCS | 2006-06-16 | yes | yes |
| 661-477 | Verizon | BKFD MAIN | 2001-11-13 | yes | yes |
| 661-478 | Verizon | PLDL PLDL | – | – | yes |
| 661-479 | Peerless | BKFD MAIN | 2016-11-18 | yes | yes |
| 661-480 | Verizon | PLDL PLDL | 2006-08-25 | yes | yes |
| 661-481 | Peerless | SNCA NHCS | 2013-03-09 | yes | yes |
| 661-482 | Charter | EDWARDS | 2013-03-12 | yes | yes |
| 661-483 | Verizon | LANCASTER | 2014-06-24 | yes | yes |
| 661-484 | Verizon | BKFD SOUTH | 2019-10-30 | yes | yes |
| 661-485 | T-Mobile | PLDL PLDL | 2014-01-08 | yes | yes |
| 661-486 | T-Mobile | PLDL AGDL | 2014-03-21 | yes | yes |
| 661-487 | AT&T | BKFD MAIN | 2005-03-01 | yes | yes |
| 661-488 | T-Mobile | LANCASTER | 2014-12-22 | yes | yes |
| 661-489 | Bandwidth | BKFD MAIN | 2014-04-22 | yes | yes |
| 661-490 | T-Mobile | BKFD MAIN | 2015-04-13 | yes | yes |
| 661-491 | Bandwidth | BKFD SOUTH | – | yes | yes |
| 661-492 | T-Mobile | LANCASTER | 2001-10-10 | yes | yes |
| 661-493 | TPx | BKFD MAIN | 2014-04-25 | yes | yes |
| 661-494 | AT&T | LANCASTER | 2014-10-08 | yes | yes |
| 661-495 | Onvoy | SNCA NHCS | – | yes | yes |
| 661-496 | AT&T | BKFD MAIN | – | – | yes |
| 661-497 | T-Mobile | BKFD MAIN | 2014-12-24 | yes | yes |
| 661-498 | Vonage | BKFD NORTH | 2018-11-26 | yes | yes |
| 661-499 | AIRESPRING, INC. | LANCASTER | 2020-05-19 | yes | yes |
| 661-500 | Verizon | TAFT | 2023-09-21 | yes | yes |
| 661-501 | BHN IP ENABLED SERVICES, LLC | BKFD SOUTH | 2018-07-17 | yes | yes |
| 661-502 | T-Mobile | SNCA NHCS | 2020-05-27 | yes | yes |
| 661-503 | T-Mobile | PLDL PLDL | 2020-07-28 | yes | yes |
| 661-504 | AT&T | PLDL PLDL | 2020-08-04 | yes | yes |
| 661-505 | Lumen | SNCA NHCS | 2001-05-01 | yes | yes |
| 661-506 | AT&T | PLDL PLDL | 2020-09-08 | yes | yes |
| 661-507 | AT&T | PLDL PLDL | 2023-09-26 | yes | yes |
| 661-508 | AT&T | PLDL PLDL | 2021-04-29 | yes | yes |
| 661-509 | Bandwidth | BKFD SOUTH | 2020-10-05 | yes | yes |
| 661-510 | T-Mobile | SNCA NHCS | – | yes | yes |
| 661-512 | T-Mobile | PLDL AGDL | 2020-09-23 | yes | yes |
| 661-513 | AT&T | SNCA SGCC | – | yes | yes |
| 661-514 | AT&T | MCFARLAND | 2020-09-17 | yes | yes |
| 661-515 | Bandwidth | HI VISTA | 2018-09-25 | yes | yes |
| 661-516 | HD CARRIER LLC | BKFD MAIN | 2020-09-30 | yes | yes |
| 661-517 | Onvoy | SNCA SGCC | 2023-06-27 | yes | yes |
| 661-518 | Telnyx | TEHACHAPI | 2021-02-02 | yes | yes |
| 661-519 | T-Mobile | ARVIN | 2021-06-30 | yes | yes |
| 661-520 | Peerless | BKFD MAIN | 2014-05-07 | yes | yes |
| 661-521 | AT&T | PLDL PLDL | 2021-07-29 | yes | yes |
| 661-522 | Bandwidth | LANCASTER | 2015-02-09 | yes | yes |
| 661-523 | AT&T | SNCA SGCC | 2014-10-08 | yes | yes |
| 661-524 | Lumen | LANCASTER | 2008-05-27 | yes | yes |
| 661-525 | Lumen | BKFD NORTH | 2014-11-25 | yes | yes |
| 661-526 | AT&T | PLDL PLDL | 2006-10-24 | yes | yes |
| 661-527 | Bandwidth | BKFD SOUTH | 2015-04-14 | yes | yes |
| 661-528 | Lumen | ROSAMOND | – | yes | yes |
| 661-529 | Onvoy | BKFD SOUTH | – | yes | yes |
| 661-531 | T-Mobile | ARVIN | 2021-10-28 | yes | yes |
| 661-532 | IP HORIZON LLC | BIG BUTTE | – | yes | yes |
| 661-533 | AT&T | PLDL PLDL | – | yes | yes |
| 661-534 | Lumen | DELANO | 2015-03-04 | yes | yes |
| 661-535 | AT&T | BKFD NORTH | 2015-07-16 | yes | yes |
| 661-536 | Frontier | GLENNVILLE | – | yes | yes |
| 661-537 | AT&T | PLDL PLDL | – | yes | yes |
| 661-538 | AT&T | PLDL PLDL | – | – | yes |
| 661-539 | Charter | MCFARLAND | 2021-11-12 | yes | yes |
| 661-540 | AT&T | PLDL PLDL | – | yes | yes |
| 661-541 | Verizon | BKFD MAIN | – | yes | yes |
| 661-542 | Onvoy | SNCA SGCC | – | yes | yes |
| 661-543 | AT&T | MCFARLAND | 2015-08-04 | yes | yes |
| 661-544 | T-Mobile | PLDL PLDL | 2010-01-14 | yes | yes |
| 661-545 | T-Mobile | DELANO | 2020-10-16 | yes | yes |
| 661-546 | Lumen | BKFD MAIN | 2015-02-16 | yes | yes |
| 661-547 | T-Mobile | LANCASTER | – | yes | yes |
| 661-548 | Frontier | CLFRNHTSPG | – | yes | yes |
| 661-549 | AT&T | BKFD MAIN | 2001-07-12 | – | yes |
| 661-550 | Bandwidth | BIG BUTTE | 2021-09-22 | yes | yes |
| 661-551 | Onvoy | BERENDMESA | – | yes | yes |
| 661-552 | IP HORIZON LLC | EARLIMART | – | yes | yes |
| 661-553 | Bandwidth | DELANO | 2015-04-28 | yes | yes |
| 661-554 | Onvoy | SNCA NHCS | – | – | yes |
| 661-556 | Verizon | BKFD SOUTH | 2014-03-21 | yes | yes |
| 661-557 | Verizon | ARVIN | – | yes | yes |
| 661-558 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-560 | Twilio | WASCO | – | yes | yes |
| 661-561 | Onvoy | DELANO | 2020-03-27 | yes | yes |
| 661-563 | T-Mobile | BKFD MAIN | 2015-07-28 | yes | yes |
| 661-564 | Verizon | BKFD SOUTH | 2015-04-21 | yes | yes |
| 661-565 | AT&T | BKFD MAIN | – | yes | yes |
| 661-566 | T-Mobile | PLDL PLDL | 2019-03-19 | yes | yes |
| 661-567 | Bandwidth | BKFD MAIN | 2015-04-27 | yes | yes |
| 661-568 | AT&T | SNCA NHCS | – | yes | yes |
| 661-569 | T-Mobile | BKFD MAIN | 2021-12-10 | yes | yes |
| 661-570 | Verizon | BKFD SOUTH | 2022-03-09 | yes | yes |
| 661-571 | Verizon | LANCASTER | 2022-04-12 | yes | yes |
| 661-572 | AT&T | PLDL PLDL | – | – | yes |
| 661-573 | AT&T | BKFD MAIN | 2015-07-16 | yes | yes |
| 661-574 | AT&T | PLDL PLDL | – | yes | yes |
| 661-575 | AT&T | PLDL PLDL | – | yes | yes |
| 661-576 | T-Mobile | PLDL PLDL | 2015-08-03 | yes | yes |
| 661-577 | T-Mobile | TAFT | – | yes | yes |
| 661-578 | Lumen | BKFD MAIN | 2006-01-24 | yes | yes |
| 661-579 | Onvoy | LANCASTER | 2008-05-28 | yes | yes |
| 661-580 | AT&T | PLDL PLDL | 2021-09-02 | yes | yes |
| 661-581 | AT&T | PLDL PLDL | 2021-11-12 | yes | yes |
| 661-582 | AT&T | LANCASTER | 2015-10-21 | yes | yes |
| 661-583 | AT&T | PLDL PLDL | 2015-11-13 | yes | yes |
| 661-584 | Lumen | MOJAVE | – | yes | yes |
| 661-585 | AT&T | PLDL PLDL | 2015-12-04 | yes | yes |
| 661-586 | AT&T | DELANO | – | – | yes |
| 661-587 | AT&T | BKFD NORTH | – | – | yes |
| 661-588 | AT&T | BKFD NORTH | – | – | yes |
| 661-589 | AT&T | BKFD NORTH | – | – | yes |
| 661-590 | TPx | WASCO | 2022-06-29 | yes | yes |
| 661-591 | Lumen | GLENNVILLE | – | yes | yes |
| 661-592 | T-Mobile | SNCA SGCC | 2015-06-09 | yes | yes |
| 661-593 | T-Mobile | SNCA NHCS | 2016-07-15 | yes | yes |
| 661-594 | T-Mobile | SHAFTER | 2022-09-02 | yes | yes |
| 661-595 | TPx | BKFD MAIN | 2022-05-26 | yes | yes |
| 661-596 | NUSO, LLC | BKFD MAIN | – | yes | yes |
| 661-597 | Verizon | MOJAVE | 2022-10-10 | yes | yes |
| 661-598 | AT&T | PLDL PLDL | 2022-10-21 | yes | yes |
| 661-599 | Verizon | BKFD SOUTH | – | – | yes |
| 661-600 | AT&T | SNCA NHCS | – | yes | yes |
| 661-601 | COMMIO, LLC | BKFD NORTH | 2022-02-24 | yes | yes |
| 661-602 | Bandwidth | BKFD SOUTH | 2022-10-11 | yes | yes |
| 661-603 | Verizon | PLDL PLDL | 2023-02-10 | yes | yes |
| 661-604 | Verizon | LANCASTER | 2023-02-17 | yes | yes |
| 661-605 | Comcast | BKFD MAIN | 2023-04-12 | yes | yes |
| 661-606 | T-Mobile | ARVIN | – | yes | yes |
| 661-607 | AT&T | SNCA NHCS | – | yes | yes |
| 661-608 | Charter | HI VISTA | 2023-04-12 | yes | yes |
| 661-609 | AT&T | LANCASTER | – | – | yes |
| 661-610 | AT&T | BKFD MAIN | 2022-07-20 | yes | yes |
| 661-612 | Dish | BKFD MAIN | 2023-05-16 | yes | yes |
| 661-613 | EXIANT COMMUNICATIONS LLC | EDWARDS | – | yes | yes |
| 661-614 | AT&T | TEHACHAPI | 2023-08-28 | yes | yes |
| 661-615 | Lumen | BKFD NORTH | – | yes | yes |
| 661-616 | Lumen | BKFD MAIN | – | yes | yes |
| 661-617 | Lumen | BKFD SOUTH | – | yes | yes |
| 661-618 | Verizon | PLDL PLDL | – | – | yes |
| 661-619 | Verizon | BKFD MAIN | – | – | yes |
| 661-620 | NORTH COUNTY COMMUNICATION CORPORATION - CA | SNCA SGCC | – | – | yes |
| 661-621 | T-Mobile | SNCA SGCC | – | yes | yes |
| 661-622 | Lumen | PLDL LNVY | – | yes | yes |
| 661-623 | AT&T | TAFT | – | yes | yes |
| 661-624 | IP HORIZON LLC | BKFD SOUTH | 2020-11-25 | yes | yes |
| 661-625 | T-Mobile | SNCA NHCS | 2021-12-08 | yes | yes |
| 661-627 | T-Mobile | SNCA NHCS | 2021-02-16 | yes | yes |
| 661-629 | COMMIO, LLC | BKFD NORTH | 2023-12-29 | yes | yes |
| 661-630 | BHN IP ENABLED SERVICES, LLC | SHAFTER | – | yes | yes |
| 661-631 | AT&T | BKFD MAIN | – | – | yes |
| 661-632 | AT&T | BKFD MAIN | – | yes | yes |
| 661-633 | AT&T | BKFD MAIN | – | yes | yes |
| 661-634 | AT&T | BKFD MAIN | – | yes | yes |
| 661-635 | AT&T | BKFD MAIN | – | – | yes |
| 661-636 | AT&T | BKFD MAIN | – | yes | yes |
| 661-637 | AT&T | BKFD MAIN | – | yes | yes |
| 661-638 | AT&T | BKFD MAIN | – | yes | yes |
| 661-639 | TON80 COMMUNICATIONS, LLC | LAKEHUGHES | 2022-02-18 | yes | yes |
| 661-640 | HD CARRIER LLC | BKFD NORTH | 2024-07-01 | yes | yes |
| 661-641 | SKYE TELECOM LLC DBA SKYETEL | EDWARDS | – | yes | yes |
| 661-642 | AT&T | DELANO | 2023-12-15 | yes | yes |
| 661-643 | Verizon | LANCASTER | 2024-07-03 | yes | yes |
| 661-644 | AT&T | SNCA NHCS | – | yes | yes |
| 661-645 | AT&T | SNCA NHCS | – | – | yes |
| 661-646 | Onvoy | LANCASTER | 2024-07-05 | yes | yes |
| 661-647 | Onvoy | BKFD SOUTH | 2024-07-05 | yes | yes |
| 661-648 | Verizon | PLDL PLDL | 2024-07-23 | yes | yes |
| 661-649 | TPx | ARVIN | 2022-07-13 | yes | yes |
| 661-651 | Onvoy | SNCA NHCS | 2022-11-23 | yes | yes |
| 661-652 | T-Mobile | SNCA NHCS | 2024-09-12 | yes | yes |
| 661-653 | T-Mobile | DELANO | 2022-04-25 | yes | yes |
| 661-654 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-655 | FRACTEL, LLC | ARVIN | 2020-07-23 | yes | yes |
| 661-656 | AT&T | PLDL PLDL | 2024-09-20 | yes | yes |
| 661-658 | LEAP TELECOM, LLC | BKFD MAIN | 2024-09-23 | yes | yes |
| 661-659 | Dish | BKFD MAIN | 2025-03-04 | yes | yes |
| 661-660 | Charter | SNCA SGCC | 2021-02-03 | yes | yes |
| 661-662 | COMMIO, LLC | BKFD MAIN | 2017-03-24 | yes | yes |
| 661-663 | AT&T | BKFD SOUTH | – | – | yes |
| 661-664 | AT&T | BKFD SOUTH | – | – | yes |
| 661-665 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-666 | Onvoy | SNCA NHCS | – | yes | yes |
| 661-667 | T-Mobile | MCFARLAND | – | yes | yes |
| 661-668 | Lumen | EARLIMART | – | yes | yes |
| 661-669 | Bandwidth | BIG BUTTE | 2019-07-02 | yes | yes |
| 661-670 | T-Mobile | SNCA NHCS | – | yes | yes |
| 661-671 | Verizon | BKFD SOUTH | 2025-03-11 | yes | yes |
| 661-672 | T-Mobile | ARVIN | 2025-03-21 | yes | yes |
| 661-673 | IP HORIZON LLC | SNCA SGCC | – | yes | yes |
| 661-674 | T-Mobile | LANCASTER | – | yes | yes |
| 661-675 | T-Mobile | PLDL PLDL | – | yes | yes |
| 661-676 | Verizon | LANCASTER | 2025-03-21 | yes | yes |
| 661-677 | FRACTEL, LLC | BKFD NORTH | 2019-12-30 | yes | yes |
| 661-678 | AT&T | SNCA NHCS | – | yes | yes |
| 661-679 | AT&T | BKFD NORTH | 2002-08-21 | yes | yes |
| 661-680 | Charter | BKFD NORTH | 2025-04-14 | yes | yes |
| 661-681 | NUSO, LLC | BKFD NORTH | 2025-04-21 | yes | yes |
| 661-682 | WAVENATION, LLC | BKFD MAIN | 2025-07-30 | yes | yes |
| 661-683 | Onvoy | LANCASTER | 2025-09-03 | yes | yes |
| 661-684 | Verizon | BKFD SOUTH | 2025-09-12 | yes | yes |
| 661-686 | Onvoy | SNCA SGCC | 2026-01-30 | yes | yes |
| 661-687 | TPx | BKFD SOUTH | 2022-05-26 | yes | yes |
| 661-688 | FRACTEL, LLC | BKFD MAIN | 2019-12-23 | yes | yes |
| 661-689 | Lumen | CLFRNHTSPG | – | yes | yes |
| 661-690 | T-Mobile | DELANO | 2019-04-12 | yes | yes |
| 661-691 | WIDE VOICE, LLC - CA | BKFD MAIN | 2025-10-30 | yes | yes |
| 661-692 | AT&T | BKFD SOUTH | 2026-03-26 | yes | yes |
| 661-693 | Onvoy | LANCASTER | 2026-09-03 | yes | no |
| 661-694 | NUSO, LLC | BKFD NORTH | – | yes | yes |
| 661-695 | Verizon | BKFD NORTH | 2002-10-15 | yes | yes |
| 661-696 | Onvoy | ARVIN | 2026-09-17 | yes | no |
| 661-697 | Verizon | BKFD SOUTH | 2026-09-25 | yes | no |
| 661-699 | Verizon | BKFD SOUTH | – | yes | yes |
| 661-701 | AT&T | PLDL PLDL | 2023-03-10 | yes | yes |
| 661-702 | AT&T | SNCA NHCS | – | yes | yes |
| 661-703 | AT&T | BKFD MAIN | – | – | yes |
| 661-704 | Lumen | MCKITTRICK | – | yes | yes |
| 661-705 | TPx | SNCA NHCS | 2002-08-09 | yes | yes |
| 661-706 | AT&T | BKFD MAIN | – | – | yes |
| 661-709 | T-Mobile | DELANO | 2001-10-10 | yes | yes |
| 661-713 | Verizon | SNCA NHCS | – | – | yes |
| 661-714 | Verizon | SNCA NHCS | – | – | yes |
| 661-716 | TPx | BKFD MAIN | 2001-03-01 | – | yes |
| 661-717 | T-Mobile | BKFD MAIN | 2001-09-28 | yes | yes |
| 661-718 | Frontier | LANCASTER | – | yes | yes |
| 661-719 | AT&T | PLDL PLDL | 2023-05-03 | yes | yes |
| 661-720 | AT&T | DELANO | – | yes | yes |
| 661-721 | AT&T | DELANO | – | – | yes |
| 661-722 | Frontier | LANCASTER | – | – | yes |
| 661-723 | Frontier | LANCASTER | – | – | yes |
| 661-724 | Frontier | LAKEHUGHES | – | yes | yes |
| 661-725 | AT&T | DELANO | – | – | yes |
| 661-726 | Frontier | LANCASTER | – | – | yes |
| 661-727 | Frontier | HI VISTA | – | yes | yes |
| 661-728 | Frontier | LANCASTER | – | yes | yes |
| 661-729 | Frontier | LANCASTER | – | – | yes |
| 661-730 | Charter | PLDL AGDL | 2023-04-12 | yes | yes |
| 661-731 | Lumen | EARLIMART | – | yes | yes |
| 661-732 | FRACTEL, LLC | DELANO | 2020-07-23 | yes | yes |
| 661-733 | Verizon | PLDL PLDL | – | – | yes |
| 661-735 | T-Mobile | BKFD SOUTH | 2002-03-12 | yes | yes |
| 661-736 | T-Mobile | ARVIN | 2024-09-17 | yes | yes |
| 661-738 | EXIANT COMMUNICATIONS LLC | BKFD MAIN | 2026-03-30 | yes | yes |
| 661-741 | Vonage | BKFD MAIN | 2018-03-14 | yes | yes |
| 661-742 | AT&T | BKFD MAIN | 2005-04-06 | yes | yes |
| 661-743 | AT&T | LANCASTER | 2023-06-22 | yes | yes |
| 661-744 | FRACTEL, LLC | PLDL PLDL | 2020-09-21 | yes | yes |
| 661-745 | BHN IP ENABLED SERVICES, LLC | TAFT | – | yes | yes |
| 661-746 | AT&T | SHAFTER | – | – | yes |
| 661-747 | Verizon | BKFD MAIN | – | – | yes |
| 661-748 | Onvoy | BKFD MAIN | 2008-05-29 | yes | yes |
| 661-749 | Lumen | MOJAVE | – | yes | yes |
| 661-750 | T-Mobile | TEHACHAPI | 2001-11-13 | yes | yes |
| 661-751 | Onvoy | BKFD SOUTH | 2023-06-27 | yes | yes |
| 661-752 | Lumen | ROSAMOND | – | yes | yes |
| 661-753 | AT&T | SNCA NHCS | – | yes | yes |
| 661-754 | AT&T | MOJAVE | – | yes | yes |
| 661-755 | AT&T | SNCA NHCS | – | – | yes |
| 661-758 | AT&T | WASCO | – | – | yes |
| 661-759 | T-Mobile | WASCO | – | yes | yes |
| 661-760 | Onvoy | BUTTONWLLW | – | yes | yes |
| 661-761 | Onvoy | MCKITTRICK | – | yes | yes |
| 661-762 | Frontier | MCKITTRICK | – | yes | yes |
| 661-763 | Frontier | TAFT | – | yes | yes |
| 661-764 | Frontier | BUTTONWLLW | – | yes | yes |
| 661-765 | Frontier | TAFT | – | yes | yes |
| 661-766 | Frontier | CUYAMA | – | yes | yes |
| 661-768 | Frontier | TAFT | – | yes | yes |
| 661-769 | Frontier | TAFT | – | yes | yes |
| 661-770 | T-Mobile | TAFT | – | yes | yes |
| 661-771 | Lumen | TEHACHAPI | – | yes | yes |
| 661-772 | Lumen | WASCO | – | yes | yes |
| 661-773 | AT&T | WALKERBSIN | – | yes | yes |
| 661-774 | 33 WIRELESS INC. | PLDL PLDL | – | – | yes |
| 661-775 | AT&T | SNCA NHCS | – | – | yes |
| 661-776 | Lumen | SHAFTER | – | yes | yes |
| 661-777 | Lumen | LEBEC | – | yes | yes |
| 661-778 | Lumen | DELANO | – | yes | yes |
| 661-779 | Lumen | ARVIN | – | yes | yes |
| 661-780 | Onvoy | PLDL LNVY | – | yes | yes |
| 661-781 | AT&T | TEHACHAPI | 2026-01-14 | yes | yes |
| 661-784 | AT&T | PLDL PLDL | 2023-07-25 | yes | yes |
| 661-786 | FRACTEL, LLC | SNCA SGCC | 2019-05-13 | yes | yes |
| 661-788 | FRACTEL, LLC | BKFD SOUTH | 2020-06-03 | yes | yes |
| 661-789 | AT&T | PLDL PLDL | – | yes | yes |
| 661-791 | UTILITY TELECOM GROUP, LLC - CA | PLDL PLDL | – | – | yes |
| 661-792 | Frontier | MCFARLAND | – | yes | yes |
| 661-793 | Onvoy | PLDL LNVY | – | yes | yes |
| 661-794 | T-Mobile | PLDL PLDL | 2006-02-22 | yes | yes |
| 661-795 | Verizon | PLDL PLDL | 2023-08-17 | yes | yes |
| 661-797 | Frontier | LOST HILLS | – | yes | yes |
| 661-799 | AT&T | SNCA NHCS | – | – | yes |
| 661-800 | Verizon | BKFD MAIN | – | yes | yes |
| 661-802 | AT&T | LANCASTER | – | yes | yes |
| 661-803 | AT&T | SNCA NHCS | 2001-04-18 | – | yes |
| 661-805 | Verizon | BKFD SOUTH | – | – | yes |
| 661-808 | AT&T | BKFD MAIN | – | yes | yes |
| 661-809 | Verizon | BKFD SOUTH | – | – | yes |
| 661-810 | T-Mobile | PLDL PLDL | – | yes | yes |
| 661-812 | Verizon | SNCA NHCS | 2024-01-17 | yes | yes |
| 661-816 | T-Mobile | PLDL PLDL | – | yes | yes |
| 661-817 | AT&T | BKFD MAIN | – | yes | yes |
| 661-820 | Verizon | BKFD MAIN | 2024-01-17 | yes | yes |
| 661-821 | AT&T | TEHACHAPI | – | yes | yes |
| 661-822 | AT&T | TEHACHAPI | – | – | yes |
| 661-823 | AT&T | TEHACHAPI | – | yes | yes |
| 661-824 | AT&T | MOJAVE | – | – | yes |
| 661-825 | T-Mobile | TEHACHAPI | – | yes | yes |
| 661-827 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-829 | AT&T | BKFD NORTH | 2002-03-12 | yes | yes |
| 661-831 | AT&T | BKFD SOUTH | – | – | yes |
| 661-832 | AT&T | BKFD SOUTH | – | – | yes |
| 661-833 | AT&T | BKFD SOUTH | – | – | yes |
| 661-834 | AT&T | BKFD SOUTH | – | – | yes |
| 661-835 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-836 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-837 | AT&T | BKFD SOUTH | – | – | yes |
| 661-839 | AT&T | PLDL PLDL | – | yes | yes |
| 661-840 | Charter | BKFD MAIN | – | yes | yes |
| 661-843 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-844 | FRACTEL, LLC | PLDL PLDL | 2020-06-01 | yes | yes |
| 661-845 | AT&T | BKFD SOUTH | – | – | yes |
| 661-846 | Onvoy | BKFD MAIN | – | yes | yes |
| 661-847 | TPx | BKFD SOUTH | 2001-03-01 | yes | yes |
| 661-849 | AT&T | EARLIMART | – | yes | yes |
| 661-850 | Onvoy | SNCA NHCS | 2026-06-01 | yes | no |
| 661-851 | Lumen | EARLIMART | – | yes | yes |
| 661-852 | AT&T | BKFD MAIN | – | yes | yes |
| 661-854 | AT&T | ARVIN | – | yes | yes |
| 661-855 | AT&T | ARVIN | – | yes | yes |
| 661-857 | T-Mobile | SNCA NHCS | – | yes | yes |
| 661-858 | AT&T | BKFD SOUTH | – | yes | yes |
| 661-859 | AT&T | BKFD MAIN | – | yes | yes |
| 661-860 | Verizon | PLDL PLDL | 2002-08-30 | yes | yes |
| 661-861 | AT&T | BKFD MAIN | – | yes | yes |
| 661-862 | AT&T | BKFD MAIN | – | yes | yes |
| 661-863 | AT&T | BKFD MAIN | – | yes | yes |
| 661-864 | AT&T | BKFD MAIN | – | yes | yes |
| 661-865 | UTILITY TELECOM GROUP, LLC - CA | BKFD MAIN | 2006-05-19 | yes | yes |
| 661-866 | FRACTEL, LLC | BKFD MAIN | 2020-09-21 | yes | yes |
| 661-867 | AT&T | WALKERBSIN | – | yes | yes |
| 661-868 | AT&T | BKFD MAIN | – | yes | yes |
| 661-869 | AT&T | BKFD MAIN | – | yes | yes |
| 661-871 | AT&T | BKFD MAIN | – | – | yes |
| 661-872 | AT&T | BKFD MAIN | – | – | yes |
| 661-873 | AT&T | BKFD MAIN | – | yes | yes |
| 661-874 | T-Mobile | LANCASTER | – | yes | yes |
| 661-877 | T-Mobile | SNCA NHCS | – | yes | yes |
| 661-878 | AT&T | PLDL PLDL | – | yes | yes |
| 661-880 | 8x8 | BKFD MAIN | 2026-05-20 | yes | no |
| 661-884 | Onvoy | WASCO | 2019-10-04 | yes | yes |
| 661-885 | Onvoy | BKFD SOUTH | – | yes | yes |
| 661-886 | AT&T | LANCASTER | 2001-02-07 | yes | yes |
| 661-887 | Onvoy | PLDL PLDL | 2021-06-07 | yes | yes |
| 661-888 | Bandwidth | SNCA NHCS | – | yes | yes |
| 661-889 | AT&T | BKFD MAIN | – | yes | yes |
| 661-899 | FRACTEL, LLC | LANCASTER | 2019-05-13 | yes | yes |
| 661-900 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-902 | Verizon | LANCASTER | – | yes | yes |
| 661-903 | AT&T | ARVIN | – | yes | yes |
| 661-904 | Verizon | SNCA NHCS | – | yes | yes |
| 661-910 | AT&T | SHAFTER | – | yes | yes |
| 661-912 | AT&T | BKFD MAIN | – | yes | yes |
| 661-916 | AT&T | LANCASTER | – | yes | yes |
| 661-917 | AT&T | LANCASTER | – | – | yes |
| 661-918 | 33 WIRELESS INC. | PLDL PLDL | – | – | yes |
| 661-922 | FRACTEL, LLC | DELANO | 2021-01-21 | yes | yes |
| 661-927 | Lumen | MCFARLAND | – | yes | yes |
| 661-928 | Onvoy | BKFD SOUTH | 2024-03-14 | yes | yes |
| 661-932 | Verizon | BKFD MAIN | – | yes | yes |
| 661-933 | FRACTEL, LLC | BKFD NORTH | 2021-07-13 | yes | yes |
| 661-934 | TON80 COMMUNICATIONS, LLC | ARVIN | 2021-04-08 | yes | yes |
| 661-936 | T-Mobile | PLDL PLDL | 2021-11-15 | yes | yes |
| 661-940 | Frontier | LANCASTER | – | – | yes |
| 661-941 | Charter | LANCASTER | 2013-03-12 | yes | yes |
| 661-942 | Frontier | LANCASTER | – | – | yes |
| 661-943 | Frontier | LANCASTER | – | – | yes |
| 661-944 | AT&T | PLDL PLDL | – | yes | yes |
| 661-945 | Frontier | LANCASTER | – | – | yes |
| 661-946 | Frontier | LANCASTER | – | – | yes |
| 661-947 | AT&T | PLDL PLDL | – | – | yes |
| 661-948 | Frontier | LANCASTER | – | – | yes |
| 661-949 | Frontier | LANCASTER | – | yes | yes |
| 661-951 | Frontier | LANCASTER | – | – | yes |
| 661-952 | Lumen | LANCASTER | – | yes | yes |
| 661-955 | FRACTEL, LLC | ARVIN | 2020-11-09 | yes | yes |
| 661-964 | TPx | SNCA NHCS | – | yes | yes |
| 661-965 | AT&T | PLDL PLDL | – | – | yes |
| 661-966 | American Messaging | PLDL PLDL | – | – | yes |
| 661-970 | AT&T | PLDL PLDL | 2024-02-20 | yes | yes |
| 661-972 | AT&T | TEHACHAPI | – | yes | yes |
| 661-974 | AT&T | LANCASTER | – | yes | yes |
| 661-977 | Lumen | SNCA SGCC | – | yes | yes |
| 661-978 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-979 | T-Mobile | BKFD MAIN | – | yes | yes |
| 661-990 | Charter | PLDL PLDL | 2024-01-04 | yes | yes |
| 661-991 | Onvoy | PLDL PLDL | 2026-06-01 | yes | no |
| 661-992 | AT&T | PLDL PLDL | – | – | yes |
| 661-993 | AT&T | SNCA NHCS | – | – | yes |
| 661-994 | AT&T | PLDL PLDL | 2024-05-09 | yes | yes |
| 661-995 | Onvoy | BKFD MAIN | 2024-04-18 | yes | yes |
| 661-996 | T-Mobile | BKFD MAIN | 2024-01-23 | yes | yes |
| 661-997 | AT&T | MCFARLAND | 2023-12-05 | yes | yes |
| 661-998 | AT&T | PLDL PLDL | 2001-05-01 | yes | yes |
| 661-999 | Onvoy | EDWARDS | – | yes | yes |
Frequently asked
How many prefixes does area code 661 have?
674 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 6,740 thousand-number ranges across 32 rate centers.
What do the first three digits after 661 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 661 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 661 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 531 of 661's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time