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 |
|---|---|---|---|---|---|---|---|
| 2026-02-25 | 307-490-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | UPTON | WY |
| 2026-02-20 | 307-290-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUNDANCE | WY |
| 2026-02-20 | 307-388-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WORLAND | WY |
| 2026-02-20 | 307-629-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEWCASTLE | WY |
| 2026-01-16 | 307-426-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2026-01-07 | 307-484-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | CHEYENNE | WY |
| 2026-01-06 | 307-482-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WHEATLAND | WY |
| 2026-01-06 | 307-485-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2026-01-06 | 307-485-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-12-29 | 307-318-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WRIGHT | WY |
| 2025-12-19 | 307-452-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2025-12-03 | 307-435-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-12-03 | 307-533-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-11-26 | 307-454-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2025-11-17 | 307-285-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | BUFFALO | WY |
| 2025-11-06 | 307-295-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRINGTON | WY |
| 2025-11-06 | 307-385-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-11-06 | 307-385-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-11-06 | 307-478-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-10-31 | 307-428-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2025-10-24 | 307-415-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2025-10-24 | 307-420-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LINGLE | WY |
| 2025-10-24 | 307-533-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-10-24 | 307-998-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-10-22 | 307-449-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | ROCK SPG | WY |
| 2025-10-22 | 307-449-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | ROCK SPG | WY |
| 2025-10-22 | 307-474-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | CODY | WY |
| 2025-10-22 | 307-474-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | CODY | WY |
| 2025-10-22 | 307-478-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-10-15 | 307-453-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-10-07 | 307-391-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MOORCROFT | WY |
| 2025-10-03 | 307-301-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2025-10-01 | 307-507-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-09-12 | 307-485-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-09-12 | 307-485-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-09-11 | 307-418-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | JACKSON | WY |
| 2025-08-27 | 307-476-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LARAMIE | WY |
| 2025-08-21 | 307-289-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY |
| 2025-08-21 | 307-414-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY |
| 2025-08-15 | 307-426-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-08-15 | 307-426-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-08-15 | 307-426-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-06-30 | 307-666-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHEYENNE | WY |
| 2025-06-20 | 307-210-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SOUTHESRDN | WY |
| 2025-06-20 | 307-229-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | COKEVILLE | WY |
| 2025-06-20 | 307-244-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FREEDOM | WY |
| 2025-06-20 | 307-281-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUNDANCE | 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.