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 |
|---|---|---|---|---|---|---|---|
| 2007-02-12 | 817-718-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-02-12 | 817-718-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-02-12 | 817-718-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2007-02-02 | 817-826-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | ROANOKE | TX |
| 2007-02-02 | 817-826-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | ROANOKE | TX |
| 2007-02-01 | 817-386-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2007-01-30 | 817-378-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-443-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-443-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-443-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-443-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-448-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-448-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-448-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-448-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-448-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2007-01-30 | 817-449-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2007-01-30 | 817-500-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-01-30 | 817-663-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-01-30 | 817-770-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-01-30 | 817-812-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-01-30 | 817-812-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | NRICHLDHLS | TX |
| 2007-01-25 | 817-848-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-25 | 817-848-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | EULESS | TX |
| 2007-01-17 | 817-409-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ALVARADO | TX |
| 2007-01-17 | 817-539-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | MANSFIELD | TX |
| 2007-01-17 | 817-983-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ARLINGTON | TX |
| 2007-01-12 | 817-217-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-01-12 | 817-217-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-01-12 | 817-217-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-01-12 | 817-217-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-01-12 | 817-217-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2007-01-05 | 817-310-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | GRAPEVINE | TX |
| 2006-12-19 | 817-718-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2006-12-18 | 817-386-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2006-12-13 | 817-449-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2006-12-13 | 817-449-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2006-12-13 | 817-449-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2006-12-13 | 817-449-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2006-12-13 | 817-449-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2006-12-06 | 817-879-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2006-12-06 | 817-879-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | 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.