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
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-06-07 | 307-454-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | RIVERTON | WY |
| 2024-06-06 | 307-453-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | WY |
| 2024-05-30 | 307-452-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-05-30 | 307-452-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-05-30 | 307-452-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-05-09 | 307-757-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHEYENNE | WY |
| 2024-05-06 | 307-396-3XXX | 3000–3999 | Assigned | VONAGE AMERICA LLC | 197D | GREENRIVER | WY |
| 2024-05-06 | 307-418-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | JACKSON | WY |
| 2024-05-06 | 307-451-9XXX | 9000–9999 | Assigned | VONAGE AMERICA LLC | 197D | ROCK SPG | WY |
| 2024-04-26 | 307-301-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-04-26 | 307-650-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHEYENNE | WY |
| 2024-04-18 | 307-396-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | GREENRIVER | WY |
| 2024-04-18 | 307-412-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-04-18 | 307-449-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROCK SPG | WY |
| 2024-04-18 | 307-533-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2024-04-11 | 307-384-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AFTON | WY |
| 2024-04-10 | 307-310-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2024-04-02 | 307-533-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | SHERIDAN | WY |
| 2024-03-28 | 307-355-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2024-03-27 | 307-384-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | AFTON | WY |
| 2024-03-27 | 307-757-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CHEYENNE | WY |
| 2024-03-19 | 307-346-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-03-19 | 307-346-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-03-19 | 307-357-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2024-03-19 | 307-419-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2024-03-07 | 307-667-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2024-03-06 | 307-434-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2024-02-29 | 307-442-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | EVANSTON | WY |
| 2024-02-09 | 307-357-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2024-02-09 | 307-357-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2024-02-07 | 307-410-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | POWELL | WY |
| 2024-02-07 | 307-418-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | WY |
| 2024-02-07 | 307-418-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2024-02-07 | 307-419-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2024-02-07 | 307-428-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | DOUGLAS | WY |
| 2024-02-07 | 307-990-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | LANDER | WY |
| 2024-02-06 | 307-434-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2024-02-05 | 307-374-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | ROCK SPG | WY |
| 2024-02-05 | 307-374-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | ROCK SPG | WY |
| 2024-02-05 | 307-463-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | RIVERTON | WY |
| 2024-02-02 | 307-667-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2024-01-31 | 307-881-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | WHEATLAND | WY |
| 2024-01-30 | 307-301-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-01-30 | 307-301-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-01-30 | 307-301-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2024-01-26 | 307-289-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-01-26 | 307-289-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-01-26 | 307-289-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-01-26 | 307-289-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2024-01-11 | 307-301-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | 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.