NumberResearchRecent thousands-block assignments
21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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
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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 |
|---|---|---|---|---|---|---|---|
| 2018-02-07 | 307-204-1XXX | 1000–1999 | Assigned | AIRUS, INC. - WY | 581H | CODY | WY |
| 2018-02-06 | 307-227-0XXX | 0000–0999 | Assigned | AIRUS, INC. - WY | 581H | MAMMOTH | WY |
| 2018-02-05 | 307-343-1XXX | 1000–1999 | Assigned | AIRUS, INC. - WY | 581H | LARAMIE | WY |
| 2018-02-02 | 307-215-0XXX | 0000–0999 | Assigned | AIRUS, INC. - WY | 581H | CASPER | WY |
| 2018-02-02 | 307-226-8XXX | 8000–8999 | Assigned | AIRUS, INC. - WY | 581H | AFTON | WY |
| 2018-02-02 | 307-271-9XXX | 9000–9999 | Assigned | AIRUS, INC. - WY | 581H | POWELL | WY |
| 2018-02-02 | 307-288-9XXX | 9000–9999 | Assigned | AIRUS, INC. - WY | 581H | EVANSTON | WY |
| 2018-02-02 | 307-370-8XXX | 8000–8999 | Assigned | AIRUS, INC. - WY | 581H | RAWLINS | WY |
| 2018-02-02 | 307-840-8XXX | 8000–8999 | Assigned | AIRUS, INC. - WY | 581H | RIVERTON | WY |
| 2017-10-23 | 307-249-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | JACKSON | WY |
| 2017-10-06 | 307-249-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | WY |
| 2017-10-06 | 307-296-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2017-10-06 | 307-337-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2017-10-06 | 307-369-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-10-05 | 307-275-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2017-09-19 | 307-629-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NEWCASTLE | WY |
| 2017-09-08 | 307-365-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CHEYENNE | WY |
| 2017-08-22 | 307-238-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAMITNDOME | WY |
| 2017-08-15 | 307-761-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LARAMIE | WY |
| 2017-08-07 | 307-298-2XXX | 2000–2999 | Assigned | AIRUS, INC. - WY | 581H | DOUGLAS | WY |
| 2017-08-07 | 307-522-1XXX | 1000–1999 | Assigned | AIRUS, INC. - WY | 581H | ROCK SPG | WY |
| 2017-07-10 | 307-414-8XXX | 8000–8999 | Assigned | AIRUS, INC. - WY | 581H | CHEYENNE | WY |
| 2017-07-06 | 307-217-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | BUFFALO | WY |
| 2017-07-05 | 307-620-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BUFFALO | WY |
| 2017-07-03 | 307-414-9XXX | 9000–9999 | Assigned | AIRUS, INC. - WY | 581H | CHEYENNE | WY |
| 2017-06-29 | 307-209-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | ROCK SPG | WY |
| 2017-05-22 | 307-317-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-22 | 307-317-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2017-05-09 | 307-312-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WSPEARFISH | WY |
| 2017-04-20 | 307-785-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | WBLLFOURCH | WY |
| 2017-04-10 | 307-312-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | WSPEARFISH | WY |
| 2017-03-30 | 307-249-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | JACKSON | WY |
| 2017-03-28 | 307-206-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | LANDER | WY |
| 2017-03-28 | 307-296-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CODY | WY |
| 2017-03-28 | 307-463-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | RIVERTON | WY |
| 2017-03-28 | 307-757-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2017-03-21 | 307-209-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | ROCK SPG | WY |
| 2017-03-21 | 307-337-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CASPER | WY |
| 2017-03-21 | 307-343-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | LARAMIE | WY |
| 2017-03-21 | 307-429-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | SHERIDAN | WY |
| 2017-03-21 | 307-670-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | GILLETTE | WY |
| 2017-03-06 | 307-761-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LARAMIE | WY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.