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 |
|---|---|---|---|---|---|---|---|
| 2012-11-13 | 307-275-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2012-11-13 | 307-275-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2012-11-13 | 307-275-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2012-11-13 | 307-296-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2012-11-13 | 307-296-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2012-11-13 | 307-296-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2012-11-13 | 307-296-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2012-11-13 | 307-314-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2012-11-13 | 307-314-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2012-11-13 | 307-315-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2012-11-13 | 307-316-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2012-11-13 | 307-344-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | MAMMOTH | WY |
| 2012-11-13 | 307-363-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2012-11-13 | 307-363-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2012-11-13 | 307-363-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2012-11-13 | 307-363-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2012-11-13 | 307-370-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2012-11-13 | 307-370-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2012-11-13 | 307-370-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2012-11-13 | 307-370-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2012-11-13 | 307-392-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | BORDER | WY |
| 2012-11-13 | 307-392-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | BORDER | WY |
| 2012-11-13 | 307-392-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | BORDER | WY |
| 2012-11-13 | 307-464-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | WRIGHT | WY |
| 2012-11-13 | 307-464-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | WRIGHT | WY |
| 2012-11-13 | 307-545-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | OLDFATHFUL | WY |
| 2012-11-13 | 307-545-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | OLDFATHFUL | WY |
| 2012-11-13 | 307-545-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | OLDFATHFUL | WY |
| 2012-11-13 | 307-886-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | AFTON | WY |
| 2012-11-13 | 307-939-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | WRIGHT | WY |
| 2012-11-12 | 307-335-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | LANDER | WY |
| 2012-11-12 | 307-461-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | SHERIDAN | WY |
| 2012-10-23 | 307-462-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CASPER | WY |
| 2012-10-17 | 307-392-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | BORDER | WY |
| 2012-09-24 | 307-247-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2012-09-24 | 307-441-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2012-09-24 | 307-441-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2012-08-24 | 307-275-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2012-08-24 | 307-757-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2012-08-14 | 307-337-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2012-08-09 | 307-231-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | PINEDALE | WY |
| 2012-08-09 | 307-271-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | POWELL | WY |
| 2012-08-09 | 307-298-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | DOUGLAS | WY |
| 2012-08-09 | 307-757-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2012-08-09 | 307-763-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | SHERIDAN | WY |
| 2012-08-09 | 307-921-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | THERMOPOLS | WY |
| 2012-08-09 | 307-941-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | NEWCASTLE | WY |
| 2012-08-02 | 307-823-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA WY-LLC | 879G | CHEYENNE | WY |
| 2012-07-24 | 307-224-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CASPER | WY |
| 2012-07-24 | 307-509-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | 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.