NumberResearchRecent thousands-block assignments
21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 307
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-12-30 | 307-292-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2022-12-14 | 307-293-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | GUERNSEY | WY |
| 2022-12-07 | 307-855-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2022-10-25 | 307-381-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | SHERIDAN | WY |
| 2022-10-07 | 307-306-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | DOUGLAS | WY |
| 2022-10-07 | 307-445-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2022-09-28 | 307-456-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | BIG PINEY | WY |
| 2022-09-23 | 307-412-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | CHEYENNE | WY |
| 2022-09-22 | 307-395-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-09-16 | 307-395-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-09-07 | 307-395-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-09-06 | 307-996-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY |
| 2022-09-06 | 307-996-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY |
| 2022-08-18 | 307-210-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SOUTHESRDN | WY |
| 2022-08-18 | 307-210-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SOUTHESRDN | WY |
| 2022-08-18 | 307-395-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-08-17 | 307-423-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | BUFFALO | WY |
| 2022-08-11 | 307-533-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SHERIDAN | WY |
| 2022-08-03 | 307-292-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2022-07-20 | 307-200-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2022-07-19 | 307-230-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BORDER | WY |
| 2022-06-29 | 307-205-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LINGLE | WY |
| 2022-06-29 | 307-374-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | ROCK SPG | WY |
| 2022-06-29 | 307-387-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | GILLETTE | WY |
| 2022-06-29 | 307-395-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LARAMIE | WY |
| 2022-06-29 | 307-458-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CASPER | WY |
| 2022-06-29 | 307-556-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | RIVERTON | WY |
| 2022-06-21 | 307-342-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | JACKSON | WY |
| 2022-06-21 | 307-381-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | SHERIDAN | WY |
| 2022-06-02 | 307-209-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2022-05-25 | 307-414-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2022-05-25 | 307-414-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2022-04-06 | 307-205-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LINGLE | WY |
| 2022-03-31 | 307-895-8XXX | 8000–8999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | CHEYENNE | WY |
| 2022-03-24 | 307-419-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CODY | WY |
| 2022-03-22 | 307-410-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | POWELL | WY |
| 2022-03-21 | 307-306-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2022-03-21 | 307-381-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2022-03-21 | 307-381-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2022-03-21 | 307-556-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2022-03-21 | 307-881-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | WHEATLAND | WY |
| 2022-03-09 | 307-441-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2022-03-09 | 307-441-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2022-03-02 | 307-888-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | OLDFATHFUL | WY |
| 2022-02-23 | 307-445-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2022-02-22 | 307-403-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | MORAN | WY |
| 2022-02-18 | 307-306-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
| 2022-02-17 | 307-291-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2022-01-27 | 307-243-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CASPER | WY |
| 2022-01-27 | 307-291-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.