NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

CHEYENNE prefixes in area code 307

NANPA records 60 assigned NXX blocks to rate center CHEYENNE in area code 307, 12.0% of the 499 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. 28 holders hold those blocks, the largest being QWEST CORPORATION (14), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (8), ONVOY, LLC - WY (5). The earliest assignment on record here is 2002-06-11 and the most recent 2026-01-07. 42 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 580 – overlay codes cover the same geography, so a rate center is served by all of them.

60 assigned blocks – 12% of 307
28 holders of record
42 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-214 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2003-01-06 no yes
307-220 T-Mobile T-MOBILE USA, INC. – yes yes
307-221 T-Mobile T-MOBILE USA, INC. – yes yes
307-222 Lumen LEVEL 3 COMMUNICATIONS, LLC - WY – yes yes
307-256 T-Mobile METROPCS, INC. 2004-01-05 yes yes
307-263 CSC WIRELESS, LLC 2019-10-16 yes yes
307-274 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2004-07-14 yes yes
307-275 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2005-01-12 yes yes
307-286 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2004-01-19 no yes
307-287 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2006-05-23 no yes
307-289 Comcast COMCAST IP PHONE, LLC 2023-04-14 yes yes
307-292 HD CARRIER LLC 2020-06-17 yes yes
307-310 Charter ONVOY SPECTRUM, LLC 2019-10-23 yes yes
307-316 Onvoy ONVOY, LLC - WY 2006-03-20 yes yes
307-317 Onvoy ONVOY, LLC - WY 2017-05-22 yes yes
307-346 Dish BOOST SUBSCRIBERCO L.L.C. 2021-07-14 yes yes
307-365 AT&T NEW CINGULAR WIRELESS PCS, LLC 2008-03-03 yes yes
307-369 Charter CHARTER IP ENABLED SERVICES, LLC 2011-01-10 yes yes
307-400 TERRA NOVA TELECOM INC. 2020-01-24 yes yes
307-412 AT&T AT&T - LOCAL 2022-09-23 yes yes
307-414 AIRUS, INC. - WY 2015-08-24 yes yes
307-415 NUSO, LLC 2023-03-03 yes yes
307-421 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY – no yes
307-426 Charter CHARTER IP ENABLED SERVICES, LLC 2007-05-22 yes yes
307-432 Lumen QWEST CORPORATION – yes yes
307-433 Lumen QWEST CORPORATION – yes yes
307-443 COMMIO, LLC 2019-06-18 yes yes
307-459 Lumen LEVEL 3 COMMUNICATIONS, LLC - WY 2002-06-11 yes yes
307-475 Telnyx TELNYX LLC 2016-12-21 yes yes
307-477 UNION TELEPHONE COMPANY – no yes
307-484 WAVENATION, LLC 2026-01-07 yes yes
307-507 WIDE VOICE, LLC - WY 2025-04-03 yes yes
307-509 Bandwidth BANDWIDTH.COM CLEC, LLC - WY 2008-09-05 yes yes
307-514 Charter CHARTER IP ENABLED SERVICES, LLC – yes yes
307-529 Onvoy ONVOY, LLC - WY 2009-08-25 yes yes
307-630 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY – no yes
307-631 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY – no yes
307-632 Lumen QWEST CORPORATION – no yes
307-633 Lumen QWEST CORPORATION – yes yes
307-634 Lumen QWEST CORPORATION – no yes
307-635 Lumen QWEST CORPORATION – no yes
307-637 Lumen QWEST CORPORATION – no yes
307-638 Lumen QWEST CORPORATION – no yes
307-640 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
307-650 AIRUS, INC. - WY – yes yes
307-666 FRACTEL, LLC 2019-05-23 yes yes
307-701 UNION TELEPHONE COMPANY 2002-12-27 no yes
307-757 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY – yes yes
307-771 Lumen QWEST CORPORATION – no yes
307-772 Lumen QWEST CORPORATION – yes yes
307-773 Lumen QWEST CORPORATION – no yes
307-775 Lumen QWEST CORPORATION – no yes
307-777 Lumen QWEST CORPORATION – no yes
307-778 Lumen QWEST CORPORATION – no yes
307-823 AT&T TELEPORT COMMUNICATIONS AMERICA WY-LLC 2012-08-01 yes yes
307-829 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-11-21 yes yes
307-895 Twilio TWILIO INTERNATIONAL, INC. 2022-03-31 yes yes
307-910 Onvoy ONVOY, LLC - WY 2021-04-23 yes yes
307-920 T-Mobile T-MOBILE USA, INC. – yes yes
307-996 Onvoy ONVOY, LLC - WY – 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

HolderBrandBlocksShare here
QWEST CORPORATION Lumen 14 23.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY Verizon 8 13.3%
ONVOY, LLC - WY Onvoy 5 8.3%
T-MOBILE USA, INC. T-Mobile 3 5%
CHARTER IP ENABLED SERVICES, LLC Charter 3 5%
LEVEL 3 COMMUNICATIONS, LLC - WY Lumen 2 3.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 3.3%
AIRUS, INC. - WY – 2 3.3%
UNION TELEPHONE COMPANY – 2 3.3%
METROPCS, INC. T-Mobile 1 1.7%
CSC WIRELESS, LLC – 1 1.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 1.7%
COMCAST IP PHONE, LLC Comcast 1 1.7%
HD CARRIER LLC – 1 1.7%
ONVOY SPECTRUM, LLC Charter 1 1.7%
BOOST SUBSCRIBERCO L.L.C. Dish 1 1.7%
TERRA NOVA TELECOM INC. – 1 1.7%
AT&T - LOCAL AT&T 1 1.7%
NUSO, LLC – 1 1.7%
COMMIO, LLC – 1 1.7%
TELNYX LLC Telnyx 1 1.7%
WAVENATION, LLC – 1 1.7%
WIDE VOICE, LLC - WY – 1 1.7%
BANDWIDTH.COM CLEC, LLC - WY Bandwidth 1 1.7%
FRACTEL, LLC – 1 1.7%
TELEPORT COMMUNICATIONS AMERICA WY-LLC AT&T 1 1.7%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 1.7%
TWILIO INTERNATIONAL, INC. Twilio 1 1.7%

Frequently asked

Which prefixes belong to CHEYENNE in area code 307?

60 blocks: 214, 220, 221, 222, 256, 263, 274, 275, 286, 287, 289, 292 and 48 more, all listed in the table above.

Which carriers have numbers in CHEYENNE?

QWEST CORPORATION (14 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (8 blocks), ONVOY, LLC - WY (5 blocks), T-MOBILE USA, INC. (3 blocks), CHARTER IP ENABLED SERVICES, LLC (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - WY (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CHEYENNE 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.

Other rate centers in 307

All 499 prefixes in 307