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 |
|---|---|---|---|---|---|---|---|
| 2008-11-03 | 307-288-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | EVANSTON | WY |
| 2008-11-03 | 307-298-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
| 2008-11-03 | 307-352-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | ROCK SPG | WY |
| 2008-11-03 | 307-438-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LANDER | WY |
| 2008-11-03 | 307-461-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | SHERIDAN | WY |
| 2008-11-03 | 307-828-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2008-11-03 | 307-840-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | RIVERTON | WY |
| 2008-10-22 | 307-655-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SHERIDAN | WY |
| 2008-10-22 | 307-670-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GILLETTE | WY |
| 2008-10-17 | 307-274-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2008-10-17 | 307-315-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2008-10-06 | 307-460-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LARAMIE | WY |
| 2008-09-30 | 307-200-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | JACKSON | WY |
| 2008-09-30 | 307-213-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CODY | WY |
| 2008-09-22 | 307-696-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GILLETTE | WY |
| 2008-09-17 | 307-438-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LANDER | WY |
| 2008-09-08 | 307-509-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2008-09-02 | 307-922-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9636 | ROCK SPG | WY |
| 2008-07-31 | 307-333-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2008-07-24 | 307-200-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | JACKSON | WY |
| 2008-07-23 | 307-922-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2008-07-18 | 307-274-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2008-07-18 | 307-274-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2008-07-18 | 307-315-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2008-07-18 | 307-315-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2008-07-02 | 307-670-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GILLETTE | WY |
| 2008-05-13 | 307-460-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LARAMIE | WY |
| 2008-05-13 | 307-466-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GREENRIVER | WY |
| 2008-05-12 | 307-257-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GILLETTE | WY |
| 2008-03-13 | 307-253-1XXX | 1000–1999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-253-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-253-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-253-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-253-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-253-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9636 | CASPER | WY |
| 2008-03-13 | 307-256-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2008-03-13 | 307-256-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2008-03-13 | 307-316-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2008-03-05 | 307-365-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY |
| 2008-02-14 | 307-438-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LANDER | WY |
| 2008-02-01 | 307-213-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CODY | WY |
| 2008-02-01 | 307-213-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CODY | WY |
| 2008-02-01 | 307-222-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CHEYENNE | WY |
| 2008-02-01 | 307-222-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CHEYENNE | WY |
| 2008-02-01 | 307-439-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CASPER | WY |
| 2008-02-01 | 307-460-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | LARAMIE | WY |
| 2008-01-25 | 307-315-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2008-01-25 | 307-315-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2008-01-22 | 307-213-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CODY | WY |
| 2008-01-22 | 307-222-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | CHEYENNE | 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.