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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-06-23 | 307-418-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | WY |
| 2023-06-23 | 307-533-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | SHERIDAN | WY |
| 2023-06-23 | 307-990-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LANDER | WY |
| 2023-06-12 | 307-374-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2023-06-09 | 307-333-8XXX | 8000–8999 | Assigned | NUSO, LLC | 732J | CASPER | WY |
| 2023-06-09 | 307-418-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | JACKSON | WY |
| 2023-05-26 | 307-487-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2023-05-24 | 307-405-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | WBLLFOURCH | WY |
| 2023-05-24 | 307-416-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | PINEDALE | WY |
| 2023-05-24 | 307-420-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LINGLE | WY |
| 2023-05-24 | 307-424-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LAKE | WY |
| 2023-05-24 | 307-427-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | MAMMOTH | WY |
| 2023-05-24 | 307-446-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | WSPEARFISH | WY |
| 2023-05-19 | 307-204-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2023-05-19 | 307-293-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | GUERNSEY | WY |
| 2023-05-19 | 307-303-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | GREENRIVER | WY |
| 2023-05-19 | 307-336-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | DANIEL | WY |
| 2023-05-19 | 307-338-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | TORRINGTON | WY |
| 2023-05-19 | 307-340-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | LUSK | WY |
| 2023-05-19 | 307-355-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LA GRANGE | WY |
| 2023-05-19 | 307-456-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | BIG PINEY | WY |
| 2023-05-19 | 307-487-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2023-05-19 | 307-788-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | WEST LYMAN | WY |
| 2023-05-19 | 307-888-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | OLDFATHFUL | WY |
| 2023-05-17 | 307-949-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | NEWCASTLE | WY |
| 2023-04-14 | 307-289-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | CHEYENNE | WY |
| 2023-04-04 | 307-990-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | LANDER | WY |
| 2023-03-29 | 307-300-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | POWELL | WY |
| 2023-03-28 | 307-650-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHEYENNE | WY |
| 2023-03-16 | 307-458-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA WY-LLC | 879G | CASPER | WY |
| 2023-03-03 | 307-415-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | CHEYENNE | WY |
| 2023-02-22 | 307-293-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | GUERNSEY | WY |
| 2023-02-17 | 307-293-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | GUERNSEY | WY |
| 2023-02-17 | 307-996-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2023-02-15 | 307-293-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | GUERNSEY | WY |
| 2023-02-08 | 307-281-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | SUNDANCE | WY |
| 2023-02-08 | 307-431-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WORLAND | WY |
| 2023-01-06 | 307-900-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | GLENDO | WY |
| 2023-01-03 | 307-318-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WRIGHT | WY |
| 2023-01-03 | 307-336-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | DANIEL | WY |
| 2023-01-03 | 307-355-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | LA GRANGE | WY |
| 2023-01-03 | 307-384-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | AFTON | WY |
| 2023-01-03 | 307-403-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | MORAN | WY |
| 2023-01-03 | 307-404-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | MEDICINBOW | WY |
| 2023-01-03 | 307-407-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WSPEARFISH | WY |
| 2023-01-03 | 307-456-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | BIG PINEY | WY |
| 2023-01-03 | 307-770-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | FARSON | WY |
| 2023-01-03 | 307-785-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WBLLFOURCH | WY |
| 2023-01-03 | 307-788-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WEST LYMAN | WY |
| 2023-01-03 | 307-888-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | OLDFATHFUL | 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.