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 |
|---|---|---|---|---|---|---|---|
| 2010-01-27 | 307-359-4XXX | 4000–4999 | Assigned | TRI TEL, INC. | 7466 | DOUGLAS | WY |
| 2010-01-27 | 307-620-4XXX | 4000–4999 | Assigned | TRI TEL, INC. | 7466 | BUFFALO | WY |
| 2010-01-27 | 307-655-4XXX | 4000–4999 | Assigned | TRI TEL, INC. | 7466 | SHERIDAN | WY |
| 2010-01-27 | 307-696-8XXX | 8000–8999 | Assigned | TRI TEL, INC. | 7466 | GILLETTE | WY |
| 2010-01-22 | 307-200-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | JACKSON | WY |
| 2010-01-22 | 307-222-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2010-01-22 | 307-223-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2010-01-22 | 307-278-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BUFFALO | WY |
| 2010-01-19 | 307-426-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CHEYENNE | WY |
| 2010-01-13 | 307-696-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GILLETTE | WY |
| 2010-01-08 | 307-253-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2009-12-30 | 307-438-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LANDER | WY |
| 2009-12-18 | 307-313-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | EVANSTON | WY |
| 2009-12-07 | 307-763-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | SHERIDAN | WY |
| 2009-12-03 | 307-212-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2009-11-13 | 307-212-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | ROCK SPG | WY |
| 2009-11-13 | 307-343-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2009-11-11 | 307-212-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROCK SPG | WY |
| 2009-11-03 | 307-575-7XXX | 7000–7999 | Assigned | N.E. COLORADO CELLULAR, INC. | 6874 | TORRINGTON | WY |
| 2009-10-28 | 307-461-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SHERIDAN | WY |
| 2009-10-15 | 307-220-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2009-10-12 | 307-275-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2009-10-12 | 307-275-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2009-10-09 | 307-343-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2009-09-28 | 307-391-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | MOORCROFT | WY |
| 2009-09-11 | 307-696-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GILLETTE | WY |
| 2009-09-10 | 307-253-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2009-08-25 | 307-529-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2009-08-17 | 307-274-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2009-07-21 | 307-343-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | LARAMIE | WY |
| 2009-07-09 | 307-253-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2009-07-09 | 307-274-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2009-06-15 | 307-373-2XXX | 2000–2999 | Assigned | BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] | 009E | GREYBULL | WY |
| 2009-06-15 | 307-440-2XXX | 2000–2999 | Assigned | BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] | 009E | BASIN | WY |
| 2009-06-04 | 307-274-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2009-05-21 | 307-438-7XXX | 7000–7999 | Assigned | ADVANCED COMMUNICATIONS TECHNOLOGY, INC. - WY | 268A | LANDER | WY |
| 2009-05-08 | 307-463-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERTON | WY |
| 2009-04-22 | 307-554-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GLENROCK | WY |
| 2009-02-03 | 307-514-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CHEYENNE | WY |
| 2009-02-02 | 307-433-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9636 | CHEYENNE | WY |
| 2009-01-21 | 307-696-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GILLETTE | WY |
| 2009-01-08 | 307-314-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2008-12-31 | 307-763-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | SHERIDAN | WY |
| 2008-11-26 | 307-696-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | GILLETTE | WY |
| 2008-11-03 | 307-200-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | JACKSON | WY |
| 2008-11-03 | 307-213-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2008-11-03 | 307-215-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CASPER | WY |
| 2008-11-03 | 307-222-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2008-11-03 | 307-254-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | POWELL | WY |
| 2008-11-03 | 307-278-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BUFFALO | 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.