Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 925 prefixes
640 of the 786 possible NXX blocks are assigned in area code 925 (81.4% of capacity), spread across 17 rate centers and 32 holders. The largest holders are PACIFIC BELL (206 blocks, 32.2%), NEW CINGULAR WIRELESS PCS, LLC (48 blocks, 7.5%), T-MOBILE USA, INC. (44 blocks, 6.9%). Grouped by brand, AT&T accounts for 280 blocks; brand-attributable holders cover 92% 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 2001-01-26 to 2026-09-14, with 34 blocks handed out in 2001 alone. 446 blocks (70%) 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. 2 assigned blocks (591, 601) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 156 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
640 assigned blocks of 786
17 rate centers
32 holders of record
70% in thousands-block pooling
Largest holders in 925
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| PACIFIC BELL | AT&T | 206 | 32.2% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 48 | 7.5% |
| T-MOBILE USA, INC. | T-Mobile | 44 | 6.9% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 39 | 6.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 38 | 5.9% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 37 | 5.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 34 | 5.3% |
| ONVOY, LLC - CA | Onvoy | 32 | 5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 25 | 3.9% |
| METROPCS, INC. | T-Mobile | 23 | 3.6% |
| MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | 20 | 3.1% |
| FRACTEL, LLC | – | 14 | 2.2% |
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.
All 640 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 |
|---|---|---|---|---|---|
| 925-200 | Verizon | PLEASANTON | – | – | yes |
| 925-201 | TPx | PLEASANTON | – | yes | yes |
| 925-202 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-203 | AT&T | PITTSBURG | 2002-02-22 | yes | yes |
| 925-204 | T-Mobile | ANTIOCH | 2015-09-22 | yes | yes |
| 925-205 | T-Mobile | DANVILLE | 2023-08-16 | yes | yes |
| 925-206 | Verizon | ANTIOCH | 2007-08-29 | yes | yes |
| 925-207 | T-Mobile | CONCORD | 2001-10-18 | yes | yes |
| 925-208 | AT&T | DANVILLE | – | yes | yes |
| 925-209 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-210 | AT&T | WALNUT CRK | – | – | yes |
| 925-212 | AT&T | WALNUT CRK | – | – | yes |
| 925-213 | Spok | WALNUT CRK | – | – | yes |
| 925-214 | Peerless | WALNUT CRK | 2016-09-10 | yes | yes |
| 925-215 | Lumen | LIVERMORE | – | yes | yes |
| 925-216 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-217 | Lumen | DANVILLE | – | yes | yes |
| 925-218 | Lumen | PLEASANTON | – | yes | yes |
| 925-219 | Lumen | ANTIOCH | – | yes | yes |
| 925-220 | Verizon | PITTSBURG | 2023-10-02 | yes | yes |
| 925-221 | 33 WIRELESS INC. | WALNUT CRK | – | – | yes |
| 925-222 | Onvoy | CONCORD | – | yes | yes |
| 925-223 | Verizon | PLEASANTON | – | yes | yes |
| 925-224 | AT&T | PLEASANTON | – | – | yes |
| 925-225 | AT&T | PLEASANTON | – | – | yes |
| 925-226 | Verizon | PLEASANTON | – | yes | yes |
| 925-227 | AT&T | PLEASANTON | – | – | yes |
| 925-228 | AT&T | MARTINEZ | – | – | yes |
| 925-229 | AT&T | MARTINEZ | – | – | yes |
| 925-230 | Lumen | DUBLN-SNRM | – | yes | yes |
| 925-231 | Lumen | MARTINEZ | – | yes | yes |
| 925-232 | Lumen | PSBG WEST | – | yes | yes |
| 925-233 | Lumen | SUNOL | – | yes | yes |
| 925-234 | Lumen | ANTIOCH | – | yes | yes |
| 925-235 | Lumen | MORAGA | – | yes | yes |
| 925-236 | Lumen | DUBLN-SNRM | – | yes | yes |
| 925-237 | Verizon | ANTIOCH | – | yes | yes |
| 925-238 | Comcast | ANTIOCH | 2008-10-31 | yes | yes |
| 925-239 | Peerless | WALNUT CRK | 2013-03-25 | yes | yes |
| 925-240 | AT&T | ECONTRCOST | – | yes | yes |
| 925-241 | Verizon | DUBLN-SNRM | – | yes | yes |
| 925-242 | AT&T | BSHP RNCH | – | yes | yes |
| 925-243 | AT&T | LIVERMORE | – | yes | yes |
| 925-244 | AT&T | BSHP RNCH | – | – | yes |
| 925-245 | AT&T | LIVERMORE | – | – | yes |
| 925-246 | AT&T | CONCORD | – | yes | yes |
| 925-247 | AT&T | MORAGA | – | yes | yes |
| 925-248 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-249 | AT&T | PLEASANTON | – | yes | yes |
| 925-250 | T-Mobile | CONCORD | – | yes | yes |
| 925-251 | AT&T | PLEASANTON | – | – | yes |
| 925-252 | AT&T | PITTSBURG | – | yes | yes |
| 925-253 | AT&T | ORINDA | – | – | yes |
| 925-254 | AT&T | ORINDA | – | – | yes |
| 925-255 | Verizon | ORINDA | – | yes | yes |
| 925-256 | AT&T | WALNUT CRK | – | – | yes |
| 925-257 | Verizon | ORINDA | – | yes | yes |
| 925-258 | AT&T | ORINDA | – | yes | yes |
| 925-259 | Verizon | ORINDA | – | yes | yes |
| 925-260 | T-Mobile | WALNUT CRK | – | yes | yes |
| 925-261 | AT&T | PSBG WEST | – | yes | yes |
| 925-262 | Lumen | WALNUT CRK | – | yes | yes |
| 925-263 | Lumen | DANVILLE | – | yes | yes |
| 925-264 | Lumen | PLEASANTON | – | yes | yes |
| 925-265 | Lumen | CONCORD | – | yes | yes |
| 925-266 | Verizon | WALNUT CRK | 2016-05-02 | yes | yes |
| 925-267 | Verizon | PITTSBURG | – | yes | yes |
| 925-268 | Verizon | MORAGA | – | yes | yes |
| 925-269 | Verizon | MARTINEZ | – | yes | yes |
| 925-270 | Lumen | CONCORD | – | yes | yes |
| 925-271 | AT&T | PLEASANTON | – | yes | yes |
| 925-272 | Lumen | DANVILLE | – | yes | yes |
| 925-273 | Verizon | LIVERMORE | – | yes | yes |
| 925-274 | AT&T | WALNUT CRK | – | – | yes |
| 925-275 | AT&T | BSHP RNCH | – | yes | yes |
| 925-276 | Verizon | CLAYTON | – | yes | yes |
| 925-277 | AT&T | BSHP RNCH | – | – | yes |
| 925-278 | Comcast | WALNUT CRK | 2013-10-24 | yes | yes |
| 925-279 | AT&T | WALNUT CRK | – | – | yes |
| 925-280 | AT&T | WALNUT CRK | – | – | yes |
| 925-281 | Onvoy | ANTIOCH | – | – | yes |
| 925-282 | Verizon | LAFAYETTE | – | yes | yes |
| 925-283 | AT&T | LAFAYETTE | – | – | yes |
| 925-284 | AT&T | LAFAYETTE | – | – | yes |
| 925-285 | AT&T | WALNUT CRK | – | – | yes |
| 925-286 | AT&T | WALNUT CRK | – | – | yes |
| 925-287 | AT&T | WALNUT CRK | – | – | yes |
| 925-288 | AT&T | CONCORD | – | – | yes |
| 925-289 | Onvoy | WALNUT CRK | 2009-02-23 | yes | yes |
| 925-290 | XO CALIFORNIA, INC. | LIVERMORE | – | yes | yes |
| 925-291 | Verizon | PSBG WEST | – | yes | yes |
| 925-292 | Comcast | LIVERMORE | – | yes | yes |
| 925-293 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | MARTINEZ | – | yes | yes |
| 925-294 | AT&T | LIVERMORE | – | yes | yes |
| 925-295 | AT&T | WALNUT CRK | – | – | yes |
| 925-296 | AT&T | WALNUT CRK | – | – | yes |
| 925-297 | Verizon | LAFAYETTE | – | yes | yes |
| 925-298 | Verizon | LAFAYETTE | – | yes | yes |
| 925-299 | AT&T | LAFAYETTE | – | – | yes |
| 925-300 | T-Mobile | WALNUT CRK | – | yes | yes |
| 925-301 | Lumen | ANTIOCH | – | yes | yes |
| 925-302 | Lumen | BSHP RNCH | – | yes | yes |
| 925-303 | Lumen | ANTIOCH | – | yes | yes |
| 925-304 | Lumen | CLAYTON | – | yes | yes |
| 925-305 | Lumen | CONCORD | – | yes | yes |
| 925-306 | SONIC TELECOM, LLC - CA | ECONTRCOST | 2017-01-13 | yes | yes |
| 925-307 | Lumen | DUBLN-SNRM | – | yes | yes |
| 925-308 | Lumen | ECONTRCOST | – | yes | yes |
| 925-309 | Lumen | DANVILLE | – | yes | yes |
| 925-310 | Lumen | LAFAYETTE | – | yes | yes |
| 925-312 | Spok | ANTIOCH | – | – | yes |
| 925-313 | AT&T | MARTINEZ | – | – | yes |
| 925-314 | AT&T | DANVILLE | – | yes | yes |
| 925-315 | Lumen | LIVERMORE | – | yes | yes |
| 925-316 | Lumen | MARTINEZ | – | yes | yes |
| 925-317 | Bandwidth | ORINDA | – | yes | yes |
| 925-318 | Lumen | PITTSBURG | – | yes | yes |
| 925-319 | T-Mobile | SUNOL | – | yes | yes |
| 925-320 | TPx | MORAGA | 2001-03-27 | yes | yes |
| 925-321 | AT&T | LIVERMORE | 2001-11-30 | yes | yes |
| 925-322 | Bandwidth | WALNUT CRK | 2011-05-10 | yes | yes |
| 925-323 | AT&T | WALNUT CRK | – | – | yes |
| 925-324 | Verizon | WALNUT CRK | 2002-08-21 | yes | yes |
| 925-325 | T-Mobile | ANTIOCH | 2001-12-28 | – | yes |
| 925-326 | Lumen | CONCORD | – | yes | yes |
| 925-327 | AT&T | BSHP RNCH | – | yes | yes |
| 925-328 | AT&T | BSHP RNCH | – | – | yes |
| 925-329 | Verizon | ANTIOCH | 2014-09-08 | yes | yes |
| 925-330 | AT&T | WALNUT CRK | 2001-11-30 | yes | yes |
| 925-331 | TPx | ANTIOCH | 2001-07-17 | yes | yes |
| 925-332 | Peerless | CONCORD | 2012-10-04 | yes | yes |
| 925-333 | American Messaging | WALNUT CRK | – | – | yes |
| 925-334 | Verizon | CONCORD | 2011-07-19 | yes | yes |
| 925-335 | AT&T | MARTINEZ | – | yes | yes |
| 925-336 | AT&T | DUBLN-SNRM | 2001-12-28 | yes | yes |
| 925-337 | Verizon | LIVERMORE | 2002-01-28 | yes | yes |
| 925-338 | Bandwidth | CONCORD | 2011-07-22 | yes | yes |
| 925-339 | T-Mobile | LIVERMORE | 2001-09-21 | – | yes |
| 925-340 | Spok | WALNUT CRK | – | – | yes |
| 925-341 | AT&T | LIVERMORE | 2020-04-21 | yes | yes |
| 925-342 | COMMIO, LLC | WALNUT CRK | – | yes | yes |
| 925-343 | American Messaging | PLEASANTON | – | – | yes |
| 925-344 | TPx | LIVERMORE | – | yes | yes |
| 925-345 | American Messaging | DANVILLE | – | – | yes |
| 925-346 | American Messaging | CONCORD | – | – | yes |
| 925-347 | American Messaging | LIVERMORE | – | – | yes |
| 925-348 | AT&T | CONCORD | 2002-01-28 | yes | yes |
| 925-349 | AT&T | CONCORD | – | yes | yes |
| 925-350 | Comcast | ANTIOCH | 2011-09-13 | yes | yes |
| 925-351 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-352 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-353 | AT&T | PLEASANTON | 2002-01-28 | yes | yes |
| 925-354 | AT&T | ANTIOCH | 2002-01-28 | yes | yes |
| 925-355 | AT&T | BSHP RNCH | – | yes | yes |
| 925-356 | AT&T | CONCORD | – | yes | yes |
| 925-357 | Lumen | WALNUT CRK | 2011-09-13 | yes | yes |
| 925-358 | AT&T | BSHP RNCH | – | – | yes |
| 925-359 | Verizon | BSHP RNCH | – | yes | yes |
| 925-360 | AT&T | WALNUT CRK | – | – | yes |
| 925-361 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-362 | AT&T | DANVILLE | – | yes | yes |
| 925-363 | AT&T | CONCORD | – | – | yes |
| 925-364 | Verizon | DUBLN-SNRM | – | yes | yes |
| 925-365 | AT&T | BSHP RNCH | – | yes | yes |
| 925-366 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-367 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-368 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-369 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | MARTINEZ | – | yes | yes |
| 925-370 | AT&T | MARTINEZ | – | – | yes |
| 925-371 | AT&T | LIVERMORE | – | yes | yes |
| 925-372 | AT&T | MARTINEZ | – | – | yes |
| 925-373 | AT&T | LIVERMORE | – | – | yes |
| 925-374 | Verizon | MARTINEZ | – | yes | yes |
| 925-375 | Verizon | CONCORD | 2016-06-29 | yes | yes |
| 925-376 | AT&T | MORAGA | – | – | yes |
| 925-377 | AT&T | MORAGA | – | yes | yes |
| 925-378 | Verizon | WALNUT CRK | 2014-12-11 | yes | yes |
| 925-379 | Lumen | PLEASANTON | 2014-11-10 | yes | yes |
| 925-380 | Lumen | BSHP RNCH | – | yes | yes |
| 925-381 | AT&T | CONCORD | – | – | yes |
| 925-382 | T-Mobile | ANTIOCH | – | yes | yes |
| 925-383 | T-Mobile | CONCORD | – | yes | yes |
| 925-384 | AT&T | ANTIOCH | 2014-12-05 | yes | yes |
| 925-385 | AT&T | LAFAYETTE | – | yes | yes |
| 925-386 | AT&T | ORINDA | – | yes | yes |
| 925-387 | AT&T | MARTINEZ | – | yes | yes |
| 925-388 | AT&T | MORAGA | – | yes | yes |
| 925-389 | AT&T | DANVILLE | 2001-11-30 | yes | yes |
| 925-390 | AT&T | ECONTRCOST | 2016-04-11 | yes | yes |
| 925-391 | Lumen | CONCORD | 2013-11-25 | yes | yes |
| 925-392 | AT&T | ECONTRCOST | – | yes | yes |
| 925-393 | Onvoy | WALNUT CRK | 2015-06-16 | yes | yes |
| 925-394 | Lumen | BSHP RNCH | – | yes | yes |
| 925-395 | AT&T | WALNUT CRK | – | yes | yes |
| 925-396 | Onvoy | PLEASANTON | – | – | yes |
| 925-397 | Onvoy | PLEASANTON | – | – | yes |
| 925-398 | AT&T | PLEASANTON | – | yes | yes |
| 925-399 | Comcast | PLEASANTON | – | yes | yes |
| 925-400 | Bandwidth | PLEASANTON | – | yes | yes |
| 925-401 | Verizon | PLEASANTON | – | yes | yes |
| 925-402 | Verizon | ORINDA | – | yes | yes |
| 925-403 | Verizon | LAFAYETTE | – | yes | yes |
| 925-404 | Verizon | DUBLN-SNRM | – | yes | yes |
| 925-405 | Verizon | CONCORD | – | yes | yes |
| 925-406 | Verizon | DANVILLE | – | yes | yes |
| 925-407 | Verizon | WALNUT CRK | – | yes | yes |
| 925-408 | AT&T | CONCORD | – | – | yes |
| 925-409 | Verizon | LIVERMORE | 2017-08-18 | yes | yes |
| 925-410 | TPx | PLEASANTON | 2020-07-14 | yes | yes |
| 925-412 | Verizon | CONCORD | 2018-11-19 | yes | yes |
| 925-413 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-414 | Verizon | CONCORD | 2019-07-31 | yes | yes |
| 925-415 | Lumen | BSHP RNCH | – | yes | yes |
| 925-416 | AT&T | PLEASANTON | – | yes | yes |
| 925-417 | AT&T | PLEASANTON | – | yes | yes |
| 925-418 | Lumen | ECONTRCOST | – | yes | yes |
| 925-419 | Onvoy | CONCORD | 2023-10-02 | yes | yes |
| 925-420 | Onvoy | ECONTRCOST | – | yes | yes |
| 925-421 | Bandwidth | CONCORD | 2012-01-27 | yes | yes |
| 925-422 | AT&T | LIVERMORE | – | – | yes |
| 925-423 | AT&T | LIVERMORE | – | – | yes |
| 925-424 | AT&T | LIVERMORE | – | – | yes |
| 925-425 | AT&T | PLEASANTON | – | yes | yes |
| 925-426 | AT&T | PLEASANTON | – | – | yes |
| 925-427 | AT&T | PITTSBURG | – | – | yes |
| 925-428 | T-Mobile | ANTIOCH | 2013-04-19 | yes | yes |
| 925-429 | Lumen | CONCORD | – | yes | yes |
| 925-430 | Comcast | WALNUT CRK | 2019-10-09 | yes | yes |
| 925-431 | AT&T | PITTSBURG | – | yes | yes |
| 925-432 | AT&T | PITTSBURG | – | – | yes |
| 925-433 | Comcast | WALNUT CRK | 2015-11-02 | yes | yes |
| 925-434 | Peerless | ANTIOCH | – | yes | yes |
| 925-435 | T-Mobile | CONCORD | – | yes | yes |
| 925-436 | T-Mobile | ANTIOCH | 2016-08-30 | yes | yes |
| 925-437 | AT&T | ANTIOCH | – | – | yes |
| 925-438 | TPx | ORINDA | – | yes | yes |
| 925-439 | AT&T | PITTSBURG | – | – | yes |
| 925-440 | Verizon | WALNUT CRK | 2018-11-02 | yes | yes |
| 925-441 | TPx | ANTIOCH | 2022-06-29 | yes | yes |
| 925-443 | AT&T | LIVERMORE | – | – | yes |
| 925-444 | TPx | LAFAYETTE | – | yes | yes |
| 925-445 | T-Mobile | ANTIOCH | 2021-04-05 | yes | yes |
| 925-446 | T-Mobile | CONCORD | 2012-06-25 | yes | yes |
| 925-447 | AT&T | LIVERMORE | – | – | yes |
| 925-448 | Verizon | WALNUT CRK | 2014-04-28 | yes | yes |
| 925-449 | AT&T | LIVERMORE | – | – | yes |
| 925-450 | Bandwidth | ECONTRCOST | 2020-06-26 | yes | yes |
| 925-451 | AT&T | WALNUT CRK | – | yes | yes |
| 925-452 | TPx | DUBLN-SNRM | – | yes | yes |
| 925-453 | Verizon | LIVERMORE | – | yes | yes |
| 925-454 | AT&T | LIVERMORE | – | – | yes |
| 925-455 | AT&T | LIVERMORE | – | yes | yes |
| 925-456 | AT&T | LIVERMORE | – | yes | yes |
| 925-457 | T-Mobile | WALNUT CRK | – | yes | yes |
| 925-458 | AT&T | PSBG WEST | – | yes | yes |
| 925-459 | Lumen | CONCORD | – | yes | yes |
| 925-460 | AT&T | PLEASANTON | – | yes | yes |
| 925-461 | AT&T | PLEASANTON | – | – | yes |
| 925-462 | AT&T | PLEASANTON | – | – | yes |
| 925-463 | AT&T | PLEASANTON | – | – | yes |
| 925-464 | Verizon | WALNUT CRK | 2012-08-16 | yes | yes |
| 925-465 | Lumen | WALNUT CRK | – | – | yes |
| 925-466 | FRACTEL, LLC | CONCORD | 2020-09-17 | yes | yes |
| 925-467 | AT&T | PLEASANTON | – | yes | yes |
| 925-468 | AT&T | PLEASANTON | – | yes | yes |
| 925-469 | AT&T | PLEASANTON | – | yes | yes |
| 925-470 | AT&T | ANTIOCH | – | yes | yes |
| 925-471 | Onvoy | CONCORD | – | yes | yes |
| 925-472 | AT&T | WALNUT CRK | – | – | yes |
| 925-473 | AT&T | PITTSBURG | – | – | yes |
| 925-474 | TPx | PLEASANTON | – | yes | yes |
| 925-475 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | PLEASANTON | – | yes | yes |
| 925-476 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | WALNUT CRK | – | yes | yes |
| 925-477 | T-Mobile | ANTIOCH | 2019-01-18 | yes | yes |
| 925-478 | Lumen | WALNUT CRK | – | yes | yes |
| 925-479 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-480 | TPx | BSHP RNCH | – | yes | yes |
| 925-481 | AT&T | ANTIOCH | 2014-03-24 | yes | yes |
| 925-482 | TPx | WALNUT CRK | – | yes | yes |
| 925-483 | Comcast | CONCORD | 2015-04-23 | yes | yes |
| 925-484 | AT&T | PLEASANTON | – | – | yes |
| 925-485 | AT&T | PLEASANTON | – | – | yes |
| 925-486 | Onvoy | DANVILLE | 2024-04-29 | yes | yes |
| 925-487 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-488 | Peerless | WALNUT CRK | 2019-06-24 | yes | yes |
| 925-489 | T-Mobile | ANTIOCH | 2020-10-15 | yes | yes |
| 925-490 | Bandwidth | CONCORD | 2014-05-23 | yes | yes |
| 925-491 | Onvoy | ANTIOCH | 2023-10-02 | yes | yes |
| 925-492 | COMMIO, LLC | PITTSBURG | 2021-09-24 | yes | yes |
| 925-493 | AT&T | LIVERMORE | – | yes | yes |
| 925-494 | Bandwidth | CONCORD | 2015-04-16 | yes | yes |
| 925-495 | Bandwidth | LIVERMORE | 2016-08-02 | yes | yes |
| 925-496 | Bandwidth | CONCORD | 2021-12-23 | yes | yes |
| 925-497 | T-Mobile | CONCORD | 2001-08-22 | – | yes |
| 925-498 | TPx | BSHP RNCH | – | yes | yes |
| 925-499 | Verizon | CONCORD | 2017-12-26 | yes | yes |
| 925-500 | Onvoy | MARTINEZ | – | yes | yes |
| 925-501 | T-Mobile | ANTIOCH | 2022-05-17 | yes | yes |
| 925-502 | AT&T | DANVILLE | 2022-07-21 | yes | yes |
| 925-503 | T-Mobile | ANTIOCH | 2017-03-23 | yes | yes |
| 925-504 | AT&T | PSBG WEST | 2022-12-16 | yes | yes |
| 925-505 | Dish | LIVERMORE | 2022-07-28 | yes | yes |
| 925-506 | T-Mobile | ANTIOCH | 2023-01-19 | yes | yes |
| 925-507 | Verizon | CONCORD | 2023-01-04 | yes | yes |
| 925-508 | Onvoy | ECONTRCOST | 2023-03-31 | yes | yes |
| 925-509 | Spok | BSHP RNCH | – | – | yes |
| 925-510 | T-Mobile | CONCORD | 2018-03-23 | yes | yes |
| 925-512 | Onvoy | WALNUT CRK | 2023-10-02 | yes | yes |
| 925-513 | AT&T | ECONTRCOST | – | yes | yes |
| 925-514 | AT&T | MARTINEZ | 2023-10-06 | yes | yes |
| 925-515 | Onvoy | CONCORD | 2020-11-11 | yes | yes |
| 925-516 | AT&T | ECONTRCOST | – | – | yes |
| 925-517 | Onvoy | PSBG WEST | – | yes | yes |
| 925-518 | T-Mobile | LIVERMORE | – | yes | yes |
| 925-519 | Verizon | PLEASANTON | – | – | yes |
| 925-520 | AT&T | PLEASANTON | – | yes | yes |
| 925-521 | AT&T | CONCORD | – | yes | yes |
| 925-522 | AT&T | ANTIOCH | – | yes | yes |
| 925-523 | AT&T | PLEASANTON | – | yes | yes |
| 925-524 | AT&T | CLAYTON | – | yes | yes |
| 925-525 | T-Mobile | LIVERMORE | – | yes | yes |
| 925-526 | TPx | PITTSBURG | – | yes | yes |
| 925-527 | UTILITY TELECOM GROUP, LLC - CA | WALNUT CRK | – | yes | yes |
| 925-528 | T-Mobile | ORINDA | – | yes | yes |
| 925-529 | Onvoy | ANTIOCH | – | yes | yes |
| 925-531 | Charter | LAFAYETTE | 2023-11-27 | yes | yes |
| 925-532 | Telnyx | WALNUT CRK | 2017-03-17 | yes | yes |
| 925-533 | FRACTEL, LLC | LIVERMORE | 2020-09-17 | yes | yes |
| 925-534 | Lumen | LIVERMORE | 2019-08-06 | yes | yes |
| 925-535 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-536 | Telnyx | CONCORD | 2017-03-17 | yes | yes |
| 925-537 | TON80 COMMUNICATIONS, LLC | LIVERMORE | 2022-01-14 | yes | yes |
| 925-538 | T-Mobile | ANTIOCH | 2024-01-19 | yes | yes |
| 925-539 | T-Mobile | ANTIOCH | 2024-06-21 | yes | yes |
| 925-540 | AT&T | DANVILLE | 2024-11-20 | yes | yes |
| 925-541 | SHELCOMM | LIVERMORE | 2024-09-12 | – | yes |
| 925-542 | Verizon | WALNUT CRK | 2017-12-26 | yes | yes |
| 925-543 | AT&T | BSHP RNCH | – | yes | yes |
| 925-544 | AT&T | ANTIOCH | 2025-04-09 | yes | yes |
| 925-545 | T-Mobile | ANTIOCH | 2025-06-25 | yes | yes |
| 925-546 | TON80 COMMUNICATIONS, LLC | WALNUT CRK | 2022-01-07 | yes | yes |
| 925-547 | Dish | PITTSBURG | 2026-01-05 | yes | yes |
| 925-548 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-549 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-550 | AT&T | ANTIOCH | – | – | yes |
| 925-551 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-552 | AT&T | DANVILLE | – | – | yes |
| 925-553 | Verizon | DANVILLE | – | yes | yes |
| 925-554 | T-Mobile | ANTIOCH | 2026-01-06 | yes | yes |
| 925-556 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-557 | Verizon | DUBLN-SNRM | – | yes | yes |
| 925-558 | Verizon | DUBLN-SNRM | – | yes | yes |
| 925-559 | AT&T | ECONTRCOST | 2026-01-07 | yes | yes |
| 925-560 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-565 | T-Mobile | ANTIOCH | 2001-09-21 | – | yes |
| 925-566 | AT&T | CONCORD | – | yes | yes |
| 925-567 | T-Mobile | CLAYTON | 2001-07-17 | yes | yes |
| 925-568 | AT&T | SUNOL | – | yes | yes |
| 925-570 | T-Mobile | DUBLN-SNRM | – | yes | yes |
| 925-571 | NORTH COUNTY COMMUNICATION CORPORATION - CA | BSHP RNCH | – | – | yes |
| 925-572 | NORTH COUNTY COMMUNICATION CORPORATION - CA | PLEASANTON | – | – | yes |
| 925-573 | NORTH COUNTY COMMUNICATION CORPORATION - CA | PITTSBURG | – | – | yes |
| 925-574 | TPx | DUBLN-SNRM | 2001-06-27 | yes | yes |
| 925-575 | T-Mobile | DANVILLE | – | yes | yes |
| 925-577 | T-Mobile | DUBLN-SNRM | 2001-09-19 | yes | yes |
| 925-578 | TON80 COMMUNICATIONS, LLC | ECONTRCOST | 2020-11-03 | yes | yes |
| 925-579 | Verizon | LIVERMORE | 2001-04-24 | yes | yes |
| 925-580 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-582 | Onvoy | DUBLN-SNRM | 2026-06-26 | yes | yes |
| 925-583 | TPx | LIVERMORE | – | yes | yes |
| 925-584 | T-Mobile | ANTIOCH | – | yes | yes |
| 925-586 | Verizon | CONCORD | – | – | yes |
| 925-587 | TPx | DUBLN-SNRM | – | yes | yes |
| 925-588 | TPx | WALNUT CRK | – | yes | yes |
| 925-590 | Charter | BSHP RNCH | 2022-06-23 | yes | yes |
| 925-591 | Onvoy | LIVERMORE | 2026-08-27 | yes | no |
| 925-592 | TPx | MORAGA | – | yes | yes |
| 925-594 | T-Mobile | DANVILLE | 2001-09-21 | yes | yes |
| 925-595 | T-Mobile | CONCORD | 2001-05-18 | yes | yes |
| 925-596 | Verizon | PLEASANTON | – | yes | yes |
| 925-597 | Verizon | PITTSBURG | – | yes | yes |
| 925-598 | AT&T | PLEASANTON | – | – | yes |
| 925-599 | FRACTEL, LLC | LIVERMORE | 2021-01-27 | yes | yes |
| 925-600 | AT&T | PLEASANTON | – | – | yes |
| 925-601 | Onvoy | PSBG WEST | 2026-09-14 | yes | no |
| 925-602 | AT&T | CONCORD | – | – | yes |
| 925-603 | AT&T | CONCORD | – | yes | yes |
| 925-605 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | LIVERMORE | – | yes | yes |
| 925-606 | AT&T | LIVERMORE | – | – | yes |
| 925-607 | Onvoy | ANTIOCH | 2026-05-21 | yes | yes |
| 925-608 | Lumen | MARTINEZ | 2001-03-01 | yes | yes |
| 925-609 | AT&T | CONCORD | – | yes | yes |
| 925-621 | TPx | PLEASANTON | 2001-04-26 | yes | yes |
| 925-623 | T-Mobile | PLEASANTON | – | yes | yes |
| 925-625 | AT&T | ECONTRCOST | – | – | yes |
| 925-626 | Verizon | ECONTRCOST | – | yes | yes |
| 925-627 | TPx | WALNUT CRK | 2001-03-27 | yes | yes |
| 925-628 | Verizon | ANTIOCH | – | – | yes |
| 925-631 | AT&T | MORAGA | – | yes | yes |
| 925-633 | FRACTEL, LLC | CONCORD | 2021-08-05 | yes | yes |
| 925-634 | AT&T | ECONTRCOST | – | – | yes |
| 925-635 | AT&T | PITTSBURG | – | yes | yes |
| 925-638 | AT&T | MARTINEZ | 2026-05-08 | yes | yes |
| 925-639 | T-Mobile | WALNUT CRK | 2001-10-18 | – | yes |
| 925-640 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-642 | AT&T | ANTIOCH | – | – | yes |
| 925-643 | TPx | PSBG WEST | 2001-05-21 | yes | yes |
| 925-644 | FRACTEL, LLC | CONCORD | 2021-07-13 | yes | yes |
| 925-646 | AT&T | CONCORD | – | – | yes |
| 925-648 | AT&T | DANVILLE | – | yes | yes |
| 925-651 | T-Mobile | WALNUT CRK | 2026-08-20 | yes | yes |
| 925-653 | Onvoy | CONCORD | 2026-07-21 | yes | yes |
| 925-655 | FRACTEL, LLC | CONCORD | 2019-03-20 | yes | yes |
| 925-658 | AT&T | WALNUT CRK | – | yes | yes |
| 925-659 | AT&T | BSHP RNCH | – | yes | yes |
| 925-660 | Lumen | PLEASANTON | – | yes | yes |
| 925-663 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | SUNOL | – | yes | yes |
| 925-664 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | PSBG WEST | – | yes | yes |
| 925-665 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | PITTSBURG | – | yes | yes |
| 925-666 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | ECONTRCOST | – | yes | yes |
| 925-667 | TPx | LIVERMORE | 2001-05-18 | yes | yes |
| 925-671 | AT&T | CONCORD | – | – | yes |
| 925-672 | AT&T | CLAYTON | – | – | yes |
| 925-673 | AT&T | CLAYTON | – | yes | yes |
| 925-674 | AT&T | CONCORD | – | – | yes |
| 925-675 | AT&T | CONCORD | – | – | yes |
| 925-676 | AT&T | CONCORD | – | – | yes |
| 925-677 | AT&T | CONCORD | – | yes | yes |
| 925-678 | TPx | DANVILLE | – | yes | yes |
| 925-679 | AT&T | ECONTRCOST | – | yes | yes |
| 925-680 | AT&T | CONCORD | – | – | yes |
| 925-681 | AT&T | CONCORD | – | yes | yes |
| 925-682 | AT&T | CONCORD | – | – | yes |
| 925-683 | AT&T | DANVILLE | – | – | yes |
| 925-684 | AT&T | ECONTRCOST | – | yes | yes |
| 925-685 | AT&T | CONCORD | – | – | yes |
| 925-686 | AT&T | CONCORD | – | – | yes |
| 925-687 | AT&T | CONCORD | – | – | yes |
| 925-688 | AT&T | CONCORD | – | yes | yes |
| 925-689 | AT&T | CONCORD | – | – | yes |
| 925-690 | Verizon | CLAYTON | – | yes | yes |
| 925-691 | AT&T | CONCORD | – | – | yes |
| 925-692 | AT&T | CONCORD | – | – | yes |
| 925-693 | AT&T | CLAYTON | – | yes | yes |
| 925-694 | Verizon | PLEASANTON | – | yes | yes |
| 925-695 | T-Mobile | CONCORD | – | yes | yes |
| 925-698 | AT&T | PITTSBURG | – | – | yes |
| 925-699 | AT&T | PLEASANTON | – | – | yes |
| 925-701 | TPx | PLEASANTON | – | yes | yes |
| 925-705 | T-Mobile | WALNUT CRK | 2001-08-22 | yes | yes |
| 925-706 | AT&T | ANTIOCH | – | – | yes |
| 925-708 | Verizon | WALNUT CRK | 2001-01-26 | – | yes |
| 925-709 | AT&T | PSBG WEST | – | yes | yes |
| 925-718 | Onvoy | DANVILLE | – | yes | yes |
| 925-719 | Verizon | DUBLN-SNRM | 2002-04-16 | yes | yes |
| 925-722 | FRACTEL, LLC | WALNUT CRK | 2021-07-07 | yes | yes |
| 925-723 | TPx | MARTINEZ | – | yes | yes |
| 925-724 | TPx | LIVERMORE | – | yes | yes |
| 925-725 | TPx | DANVILLE | – | yes | yes |
| 925-726 | TPx | CONCORD | – | yes | yes |
| 925-727 | T-Mobile | ANTIOCH | – | yes | yes |
| 925-730 | AT&T | PLEASANTON | – | yes | yes |
| 925-732 | Onvoy | ANTIOCH | – | yes | yes |
| 925-733 | FRACTEL, LLC | DANVILLE | 2021-08-05 | yes | yes |
| 925-734 | AT&T | PLEASANTON | – | yes | yes |
| 925-735 | AT&T | BSHP RNCH | – | yes | yes |
| 925-736 | AT&T | DANVILLE | – | – | yes |
| 925-737 | AT&T | PLEASANTON | – | yes | yes |
| 925-738 | Verizon | PLEASANTON | – | yes | yes |
| 925-743 | AT&T | DANVILLE | – | – | yes |
| 925-744 | FRACTEL, LLC | WALNUT CRK | 2020-11-13 | yes | yes |
| 925-746 | AT&T | WALNUT CRK | – | – | yes |
| 925-750 | Verizon | PLEASANTON | – | yes | yes |
| 925-752 | Verizon | ANTIOCH | – | yes | yes |
| 925-753 | AT&T | ANTIOCH | – | – | yes |
| 925-754 | AT&T | ANTIOCH | – | – | yes |
| 925-755 | AT&T | ANTIOCH | – | yes | yes |
| 925-756 | AT&T | ANTIOCH | – | – | yes |
| 925-757 | AT&T | ANTIOCH | – | – | yes |
| 925-758 | FRACTEL, LLC | LIVERMORE | 2019-03-20 | yes | yes |
| 925-759 | AT&T | ANTIOCH | – | – | yes |
| 925-762 | AT&T | BSHP RNCH | – | – | yes |
| 925-765 | T-Mobile | WALNUT CRK | – | yes | yes |
| 925-766 | T-Mobile | WALNUT CRK | – | yes | yes |
| 925-768 | Verizon | CONCORD | 2001-06-25 | – | yes |
| 925-771 | TPx | CONCORD | 2001-03-01 | yes | yes |
| 925-775 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | ANTIOCH | – | yes | yes |
| 925-776 | AT&T | ANTIOCH | – | – | yes |
| 925-777 | AT&T | ANTIOCH | – | – | yes |
| 925-778 | AT&T | ANTIOCH | – | – | yes |
| 925-779 | AT&T | ANTIOCH | – | – | yes |
| 925-783 | Verizon | ANTIOCH | – | – | yes |
| 925-784 | Verizon | LIVERMORE | – | – | yes |
| 925-785 | Verizon | DUBLN-SNRM | – | – | yes |
| 925-786 | Verizon | BSHP RNCH | – | yes | yes |
| 925-787 | Verizon | CONCORD | – | – | yes |
| 925-788 | Verizon | WALNUT CRK | – | – | yes |
| 925-789 | Verizon | SUNOL | – | yes | yes |
| 925-790 | AT&T | BSHP RNCH | 2001-01-26 | yes | yes |
| 925-791 | TPx | DANVILLE | 2001-07-16 | yes | yes |
| 925-794 | Onvoy | MORAGA | – | yes | yes |
| 925-798 | AT&T | CONCORD | – | – | yes |
| 925-799 | FRACTEL, LLC | PITTSBURG | 2019-03-20 | yes | yes |
| 925-800 | Onvoy | LIVERMORE | – | yes | yes |
| 925-803 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-804 | AT&T | BSHP RNCH | – | yes | yes |
| 925-806 | AT&T | BSHP RNCH | – | yes | yes |
| 925-807 | Verizon | BSHP RNCH | – | yes | yes |
| 925-808 | AT&T | CONCORD | – | yes | yes |
| 925-809 | TPx | ECONTRCOST | 2001-03-01 | yes | yes |
| 925-812 | T-Mobile | MARTINEZ | 2001-09-21 | yes | yes |
| 925-813 | Verizon | ANTIOCH | 2002-08-21 | yes | yes |
| 925-815 | AT&T | BSHP RNCH | – | yes | yes |
| 925-817 | AT&T | WALNUT CRK | – | yes | yes |
| 925-818 | AT&T | WALNUT CRK | – | yes | yes |
| 925-819 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-820 | AT&T | DANVILLE | – | – | yes |
| 925-822 | Verizon | CONCORD | – | yes | yes |
| 925-823 | AT&T | BSHP RNCH | – | – | yes |
| 925-824 | AT&T | BSHP RNCH | – | – | yes |
| 925-825 | AT&T | CONCORD | – | – | yes |
| 925-826 | Verizon | CONCORD | – | yes | yes |
| 925-827 | AT&T | CONCORD | – | – | yes |
| 925-828 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-829 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-830 | AT&T | BSHP RNCH | – | yes | yes |
| 925-831 | AT&T | DANVILLE | – | – | yes |
| 925-832 | TON80 COMMUNICATIONS, LLC | ECONTRCOST | 2022-01-31 | yes | yes |
| 925-833 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-834 | TON80 COMMUNICATIONS, LLC | ANTIOCH | 2021-09-29 | yes | yes |
| 925-835 | TPx | SUNOL | – | yes | yes |
| 925-837 | AT&T | DANVILLE | – | – | yes |
| 925-838 | AT&T | DANVILLE | – | – | yes |
| 925-839 | TPx | MARTINEZ | 2001-04-24 | yes | yes |
| 925-840 | Onvoy | ANTIOCH | 2026-07-30 | yes | yes |
| 925-842 | AT&T | BSHP RNCH | – | – | yes |
| 925-843 | Lumen | BSHP RNCH | 2010-05-20 | yes | yes |
| 925-844 | TPx | CLAYTON | 2001-07-17 | yes | yes |
| 925-846 | AT&T | PLEASANTON | – | – | yes |
| 925-847 | AT&T | PLEASANTON | – | – | yes |
| 925-848 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | ANTIOCH | – | yes | yes |
| 925-849 | TPx | CONCORD | – | yes | yes |
| 925-852 | Verizon | CONCORD | 2001-04-24 | yes | yes |
| 925-854 | Verizon | DANVILLE | – | yes | yes |
| 925-855 | AT&T | DANVILLE | – | – | yes |
| 925-856 | Verizon | DANVILLE | – | yes | yes |
| 925-858 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-860 | Onvoy | SUNOL | – | yes | yes |
| 925-862 | AT&T | SUNOL | – | yes | yes |
| 925-864 | T-Mobile | CONCORD | – | yes | yes |
| 925-866 | AT&T | BSHP RNCH | – | – | yes |
| 925-867 | AT&T | BSHP RNCH | – | – | yes |
| 925-871 | Onvoy | LAFAYETTE | – | yes | yes |
| 925-872 | Verizon | PLEASANTON | – | – | yes |
| 925-875 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-876 | AT&T | WALNUT CRK | – | – | yes |
| 925-877 | FRACTEL, LLC | ANTIOCH | 2019-03-20 | yes | yes |
| 925-878 | T-Mobile | LAFAYETTE | – | yes | yes |
| 925-880 | FRACTEL, LLC | ECONTRCOST | 2021-07-13 | yes | yes |
| 925-884 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | BSHP RNCH | – | yes | yes |
| 925-885 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | ORINDA | – | yes | yes |
| 925-886 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | DANVILLE | – | yes | yes |
| 925-887 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | CONCORD | – | yes | yes |
| 925-888 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | MORAGA | – | yes | yes |
| 925-889 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | CLAYTON | – | yes | yes |
| 925-890 | AT&T | CONCORD | – | – | yes |
| 925-891 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | WALNUT CRK | – | yes | yes |
| 925-892 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | PLEASANTON | – | yes | yes |
| 925-895 | T-Mobile | DUBLN-SNRM | – | yes | yes |
| 925-897 | T-Mobile | DUBLN-SNRM | 2021-09-17 | yes | yes |
| 925-899 | AT&T | WALNUT CRK | – | – | yes |
| 925-900 | Onvoy | LAFAYETTE | – | yes | yes |
| 925-901 | AT&T | BSHP RNCH | – | – | yes |
| 925-904 | AT&T | BSHP RNCH | – | – | yes |
| 925-905 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | DUBLN-SNRM | – | yes | yes |
| 925-906 | AT&T | WALNUT CRK | – | – | yes |
| 925-913 | T-Mobile | BSHP RNCH | 2002-09-20 | yes | yes |
| 925-914 | T-Mobile | CLAYTON | 2002-09-20 | yes | yes |
| 925-915 | T-Mobile | DANVILLE | 2002-09-20 | yes | yes |
| 925-917 | T-Mobile | MARTINEZ | 2002-09-20 | yes | yes |
| 925-918 | Verizon | PLEASANTON | – | yes | yes |
| 925-920 | Spok | WALNUT CRK | – | – | yes |
| 925-922 | T-Mobile | PLEASANTON | 2002-09-20 | yes | yes |
| 925-924 | AT&T | PLEASANTON | – | yes | yes |
| 925-925 | Onvoy | CONCORD | 2022-09-27 | yes | yes |
| 925-926 | AT&T | WALNUT CRK | – | – | yes |
| 925-927 | AT&T | WALNUT CRK | – | – | yes |
| 925-930 | AT&T | WALNUT CRK | – | – | yes |
| 925-931 | AT&T | PLEASANTON | – | yes | yes |
| 925-932 | AT&T | WALNUT CRK | – | – | yes |
| 925-933 | AT&T | WALNUT CRK | – | – | yes |
| 925-934 | AT&T | WALNUT CRK | – | – | yes |
| 925-935 | AT&T | WALNUT CRK | – | – | yes |
| 925-937 | AT&T | WALNUT CRK | – | – | yes |
| 925-938 | AT&T | WALNUT CRK | – | – | yes |
| 925-939 | AT&T | WALNUT CRK | – | – | yes |
| 925-940 | Onvoy | WALNUT CRK | – | – | yes |
| 925-941 | AT&T | WALNUT CRK | – | yes | yes |
| 925-942 | AT&T | WALNUT CRK | – | – | yes |
| 925-943 | AT&T | WALNUT CRK | – | – | yes |
| 925-944 | AT&T | WALNUT CRK | – | – | yes |
| 925-945 | AT&T | WALNUT CRK | – | – | yes |
| 925-946 | AT&T | WALNUT CRK | – | – | yes |
| 925-947 | AT&T | WALNUT CRK | – | – | yes |
| 925-948 | Verizon | WALNUT CRK | – | yes | yes |
| 925-949 | AT&T | WALNUT CRK | – | yes | yes |
| 925-951 | Verizon | WALNUT CRK | – | yes | yes |
| 925-952 | AT&T | WALNUT CRK | – | yes | yes |
| 925-953 | Lumen | WALNUT CRK | – | yes | yes |
| 925-954 | TPx | WALNUT CRK | – | yes | yes |
| 925-955 | UTILITY TELECOM GROUP, LLC - CA | WALNUT CRK | – | – | yes |
| 925-956 | Verizon | WALNUT CRK | – | yes | yes |
| 925-957 | AT&T | MARTINEZ | – | yes | yes |
| 925-960 | AT&T | LIVERMORE | – | yes | yes |
| 925-961 | AT&T | LIVERMORE | – | yes | yes |
| 925-962 | AT&T | LAFAYETTE | – | yes | yes |
| 925-963 | AT&T | PLEASANTON | – | – | yes |
| 925-964 | AT&T | DANVILLE | – | yes | yes |
| 925-965 | AT&T | PLEASANTON | – | yes | yes |
| 925-966 | FRACTEL, LLC | ANTIOCH | 2021-04-18 | yes | yes |
| 925-967 | AT&T | DUBLN-SNRM | – | yes | yes |
| 925-968 | AT&T | BSHP RNCH | – | yes | yes |
| 925-969 | AT&T | CONCORD | – | – | yes |
| 925-973 | AT&T | BSHP RNCH | – | yes | yes |
| 925-974 | AT&T | WALNUT CRK | – | – | yes |
| 925-975 | AT&T | WALNUT CRK | – | – | yes |
| 925-977 | AT&T | WALNUT CRK | – | – | yes |
| 925-978 | AT&T | ANTIOCH | – | yes | yes |
| 925-979 | AT&T | WALNUT CRK | – | yes | yes |
| 925-980 | AT&T | LIVERMORE | – | – | yes |
| 925-983 | Verizon | BSHP RNCH | – | yes | yes |
| 925-984 | T-Mobile | DANVILLE | – | yes | yes |
| 925-988 | AT&T | WALNUT CRK | – | – | yes |
| 925-989 | Verizon | PLEASANTON | – | – | yes |
| 925-990 | UTILITY TELECOM GROUP, LLC - CA | SUNOL | – | yes | yes |
| 925-993 | HD CARRIER LLC | CLAYTON | – | yes | yes |
| 925-995 | Charter | CONCORD | 2024-01-04 | yes | yes |
| 925-997 | AT&T | DUBLN-SNRM | – | – | yes |
| 925-998 | AT&T | PLEASANTON | – | – | yes |
| 925-999 | Verizon | DUBLN-SNRM | – | yes | yes |
Frequently asked
How many prefixes does area code 925 have?
640 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 6,400 thousand-number ranges across 17 rate centers.
What do the first three digits after 925 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 925 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 925 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 446 of 925'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