NumberResearchRecent thousands-block assignments
3 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 817
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 |
|---|---|---|---|---|---|---|---|
| 2007-08-28 | 817-960-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-28 | 817-960-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-28 | 817-960-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-28 | 817-960-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-28 | 817-960-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-28 | 817-960-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2007-08-23 | 817-629-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | WEATHERFD | TX |
| 2007-08-17 | 817-357-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEBURNE | TX |
| 2007-08-14 | 817-757-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | WEATHERFD | TX |
| 2007-08-14 | 817-757-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | WEATHERFD | TX |
| 2007-08-14 | 817-812-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-08-14 | 817-812-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-08-02 | 817-527-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRAPEVINE | TX |
| 2007-07-30 | 817-806-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | FORT WORTH | TX |
| 2007-07-30 | 817-806-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | FORT WORTH | TX |
| 2007-07-17 | 817-701-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-07-17 | 817-701-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-07-17 | 817-701-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-07-16 | 817-984-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | FORT WORTH | TX |
| 2007-07-09 | 817-627-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-07-09 | 817-627-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-07-09 | 817-627-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-07-09 | 817-627-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-07-09 | 817-627-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-07-02 | 817-718-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-07-02 | 817-851-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-07-02 | 817-851-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-07-02 | 817-851-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-07-02 | 817-851-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-07-02 | 817-851-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-06-28 | 817-406-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | AZLE | TX |
| 2007-06-21 | 817-851-0XXX | 0000–0999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | GLENDALE | TX |
| 2007-06-20 | 817-361-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-361-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-489-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-489-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-489-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-696-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-696-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-696-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-696-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-20 | 817-696-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-06-14 | 817-386-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2007-06-14 | 817-458-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | WEATHERFD | TX |
| 2007-06-07 | 817-225-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MANSFIELD | TX |
| 2007-06-04 | 817-262-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2007-06-04 | 817-323-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2007-06-04 | 817-542-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2007-06-04 | 817-606-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2007-06-04 | 817-679-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
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.