NumberResearchRecent thousands-block assignments
3 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 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 |
|---|---|---|---|---|---|---|---|
| 2005-11-22 | 817-814-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-814-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-814-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-814-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-22 | 817-815-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2005-11-18 | 817-238-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2005-11-17 | 817-591-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ATLAS | TX |
| 2005-11-16 | 817-449-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | TX |
| 2005-11-16 | 817-507-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GLENDALE | TX |
| 2005-11-16 | 817-616-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ATLAS | TX |
| 2005-11-16 | 817-912-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GRAPEVINE | TX |
| 2005-11-15 | 817-225-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MANSFIELD | TX |
| 2005-11-15 | 817-330-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | KENNEDALE | TX |
| 2005-11-15 | 817-479-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | NRICHLDHLS | TX |
| 2005-11-15 | 817-510-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | EULESS | TX |
| 2005-11-14 | 817-807-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2005-11-14 | 817-964-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANBURY | TX |
| 2005-11-09 | 817-733-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-733-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-733-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-734-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-734-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-734-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-734-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-09 | 817-734-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2005-11-04 | 817-204-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-204-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-210-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-212-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-230-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-230-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-230-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-231-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-231-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-231-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2005-11-04 | 817-323-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2005-11-04 | 817-323-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2005-11-04 | 817-323-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2005-11-04 | 817-323-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2005-11-04 | 817-404-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2005-11-04 | 817-404-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
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.