Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
SIOUX FLS prefixes in area code 605
NANPA records 92 assigned NXX blocks to rate center SIOUX FLS in area code 605, 12.3% of the 745 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 33 holders hold those blocks, the largest being QWEST CORPORATION (29), NEW CINGULAR WIRELESS PCS, LLC - IL (9), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (9). The earliest assignment on record here is 2001-03-16 and the most recent 2026-04-23. 52 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
92 assigned blocks – 12.3% of 605
33 holders of record
52 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 605-201 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 605-212 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 2003-11-06 | no | yes |
| 605-215 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2009-12-19 | yes | yes |
| 605-221 | Windstream PAETEC ITEL, LLC | 2001-03-16 | yes | yes |
| 605-231 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 605-241 | SOUTH DAKOTA NETWORK, LLC | – | no | yes |
| 605-250 | Onvoy ONVOY, LLC - SD | 2017-05-25 | yes | yes |
| 605-251 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 605-254 | AT&T AT&T - LOCAL | – | yes | yes |
| 605-261 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 2003-02-12 | no | yes |
| 605-271 | MIDCONTINENT COMMUNICATIONS. - SD | 2004-10-29 | no | yes |
| 605-274 | MIDCONTINENT COMMUNICATIONS. - SD | – | no | yes |
| 605-275 | MIDCONTINENT COMMUNICATIONS. - SD | 2002-10-02 | no | yes |
| 605-305 | Telnyx TELNYX LLC | 2016-12-21 | yes | yes |
| 605-306 | CLARITY TELECOM, LLC DBA BLUEPEAK | 2001-05-07 | no | yes |
| 605-310 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-312 | Lumen QWEST CORPORATION | 2007-10-02 | yes | yes |
| 605-321 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-322 | Lumen QWEST CORPORATION | – | no | yes |
| 605-323 | Lumen QWEST CORPORATION | – | yes | yes |
| 605-328 | Lumen QWEST CORPORATION | – | no | yes |
| 605-330 | Lumen QWEST CORPORATION | – | no | yes |
| 605-331 | Lumen QWEST CORPORATION | – | no | yes |
| 605-332 | Lumen QWEST CORPORATION | – | no | yes |
| 605-333 | Lumen QWEST CORPORATION | – | no | yes |
| 605-334 | Lumen QWEST CORPORATION | – | no | yes |
| 605-335 | Lumen QWEST CORPORATION | – | no | yes |
| 605-336 | Lumen QWEST CORPORATION | – | no | yes |
| 605-338 | Lumen QWEST CORPORATION | – | no | yes |
| 605-339 | Lumen QWEST CORPORATION | – | no | yes |
| 605-351 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-357 | Lumen QWEST CORPORATION | – | no | yes |
| 605-359 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-360 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 605-361 | Lumen QWEST CORPORATION | – | no | yes |
| 605-362 | Lumen QWEST CORPORATION | – | no | yes |
| 605-366 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-367 | Lumen QWEST CORPORATION | – | no | yes |
| 605-370 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-05-11 | yes | yes |
| 605-371 | Lumen QWEST CORPORATION | – | yes | yes |
| 605-373 | Lumen QWEST CORPORATION | – | no | yes |
| 605-376 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 605-400 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2007-08-20 | no | yes |
| 605-401 | IP HORIZON LLC | 2021-03-02 | yes | yes |
| 605-403 | CSC WIRELESS, LLC | 2019-05-29 | yes | yes |
| 605-404 | Lumen QWEST CORPORATION | 2017-03-23 | yes | yes |
| 605-413 | Lumen LEVEL 3 COMMUNICATIONS, LLC - SD | 2002-06-19 | yes | yes |
| 605-444 | MIDCONTINENT COMMUNICATIONS. - SD | 2006-08-31 | no | yes |
| 605-476 | WAVENATION, LLC | 2025-08-08 | yes | yes |
| 605-496 | Onvoy ONVOY, LLC - SD | 2008-12-17 | yes | yes |
| 605-501 | WIDE VOICE, LLC - SD | 2019-11-19 | yes | yes |
| 605-504 | Lumen QWEST CORPORATION | 2016-08-31 | yes | yes |
| 605-509 | Lumen QWEST CORPORATION | – | no | yes |
| 605-518 | Comcast COMCAST IP PHONE, LLC | 2023-04-13 | yes | yes |
| 605-521 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2001-09-26 | yes | yes |
| 605-553 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2004-07-14 | yes | yes |
| 605-575 | Lumen QWEST CORPORATION | – | no | yes |
| 605-595 | AT&T AT&T - LOCAL | – | yes | yes |
| 605-601 | Twilio TWILIO INTERNATIONAL, INC. | 2020-10-23 | yes | yes |
| 605-606 | Charter ONVOY SPECTRUM, LLC | 2019-10-25 | yes | yes |
| 605-607 | HD CARRIER LLC | 2019-12-09 | yes | yes |
| 605-610 | Lumen LEVEL 3 COMMUNICATIONS, LLC - SD | – | yes | yes |
| 605-650 | EXIANT COMMUNICATIONS LLC | 2019-09-18 | yes | yes |
| 605-679 | Lumen QWEST CORPORATION | 2012-09-14 | yes | yes |
| 605-681 | NUSO, LLC | 2013-03-08 | yes | yes |
| 605-705 | COMMIO, LLC | 2019-06-19 | yes | yes |
| 605-728 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | no | yes |
| 605-731 | Lumen QWEST CORPORATION | – | yes | yes |
| 605-740 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2017-03-30 | yes | yes |
| 605-759 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | yes | yes |
| 605-774 | EDGETEL, LLC | 2020-01-17 | yes | yes |
| 605-782 | Lumen QWEST CORPORATION | – | yes | yes |
| 605-789 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2010-07-12 | yes | yes |
| 605-790 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-04-23 | yes | yes |
| 605-799 | AIRUS, INC. - SD | 2015-08-24 | yes | yes |
| 605-800 | TERRA NOVA TELECOM INC. | 2018-12-11 | yes | yes |
| 605-809 | NUSO, LLC | – | yes | yes |
| 605-812 | Dish BOOST SUBSCRIBERCO L.L.C. | 2021-06-11 | yes | yes |
| 605-838 | Onvoy ONVOY, LLC - SD | 2008-06-17 | yes | yes |
| 605-900 | FRACTEL, LLC | 2019-01-25 | yes | yes |
| 605-906 | AT&T TELEPORT COMMUNICATIONS AMERICA SD-LLC | 2012-02-06 | yes | yes |
| 605-910 | Onvoy ONVOY, LLC - SD | 2021-04-16 | yes | yes |
| 605-929 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | – | no | yes |
| 605-937 | Bandwidth BANDWIDTH.COM CLEC, LLC - SD | – | yes | yes |
| 605-940 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 605-941 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 605-951 | Bandwidth BANDWIDTH.COM CLEC, LLC - SD | 2008-06-17 | yes | yes |
| 605-961 | Vonage VONAGE AMERICA LLC | 2018-06-21 | yes | yes |
| 605-965 | CLARITY TELECOM, LLC DBA BLUEPEAK | – | no | yes |
| 605-977 | Lumen QWEST CORPORATION | – | no | yes |
| 605-978 | Lumen QWEST CORPORATION | – | no | yes |
| 605-988 | Lumen QWEST CORPORATION | – | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 29 | 31.5% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 9 | 9.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | Verizon | 9 | 9.8% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 5 | 5.4% |
| ONVOY, LLC - SD | Onvoy | 4 | 4.3% |
| MIDCONTINENT COMMUNICATIONS. - SD | – | 4 | 4.3% |
| AT&T - LOCAL | AT&T | 2 | 2.2% |
| CLARITY TELECOM, LLC DBA BLUEPEAK | – | 2 | 2.2% |
| LEVEL 3 COMMUNICATIONS, LLC - SD | Lumen | 2 | 2.2% |
| NUSO, LLC | – | 2 | 2.2% |
| BANDWIDTH.COM CLEC, LLC - SD | Bandwidth | 2 | 2.2% |
| PAETEC ITEL, LLC | Windstream | 1 | 1.1% |
| SOUTH DAKOTA NETWORK, LLC | – | 1 | 1.1% |
| TELNYX LLC | Telnyx | 1 | 1.1% |
| IP HORIZON LLC | – | 1 | 1.1% |
| CSC WIRELESS, LLC | – | 1 | 1.1% |
| WAVENATION, LLC | – | 1 | 1.1% |
| WIDE VOICE, LLC - SD | – | 1 | 1.1% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 1.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 1.1% |
| TWILIO INTERNATIONAL, INC. | Twilio | 1 | 1.1% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 1.1% |
| HD CARRIER LLC | – | 1 | 1.1% |
| EXIANT COMMUNICATIONS LLC | – | 1 | 1.1% |
| COMMIO, LLC | – | 1 | 1.1% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 1.1% |
| EDGETEL, LLC | – | 1 | 1.1% |
| AIRUS, INC. - SD | – | 1 | 1.1% |
| TERRA NOVA TELECOM INC. | – | 1 | 1.1% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 1.1% |
| FRACTEL, LLC | – | 1 | 1.1% |
| TELEPORT COMMUNICATIONS AMERICA SD-LLC | AT&T | 1 | 1.1% |
| VONAGE AMERICA LLC | Vonage | 1 | 1.1% |
Frequently asked
Which prefixes belong to SIOUX FLS in area code 605?
92 blocks: 201, 212, 215, 221, 231, 241, 250, 251, 254, 261, 271, 274 and 80 more, all listed in the table above.
Which carriers have numbers in SIOUX FLS?
QWEST CORPORATION (29 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (9 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (9 blocks), AERIAL COMMUNICATIONS, INC. (5 blocks), ONVOY, LLC - SD (4 blocks), MIDCONTINENT COMMUNICATIONS. - SD (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SIOUX FLS a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.