NumberResearchRecent thousands-block assignments
11 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 281
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 |
|---|---|---|---|---|---|---|---|
| 2002-11-19 | 281-671-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | SATSUMA | TX |
| 2002-11-18 | 281-726-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-11-18 | 281-726-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-11-18 | 281-733-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-11-18 | 281-733-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-11-18 | 281-898-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | APOLLO | TX |
| 2002-11-18 | 281-898-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | APOLLO | TX |
| 2002-10-25 | 281-466-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2002-10-24 | 281-693-9XXX | 9000–9999 | Assigned | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | 2072 | KATY | TX |
| 2002-10-18 | 281-404-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-14 | 281-500-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | LANGHAMCRK | TX |
| 2002-10-01 | 281-241-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | DEER PARK | TX |
| 2002-09-27 | 281-318-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HUMBLE | TX |
| 2002-09-13 | 281-466-5XXX | 5000–5999 | Assigned | AT&T - LOCAL | 7421 | SPRING | TX |
| 2002-08-27 | 281-220-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-08-16 | 281-394-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | KATY | TX |
| 2002-08-09 | 281-576-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MONTBLVIEU | TX |
| 2002-07-22 | 281-465-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2002-07-22 | 281-465-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2002-07-19 | 281-371-5XXX | 5000–5999 | Assigned | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | 2109 | KATY | TX |
| 2002-06-26 | 281-305-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PINEHURST | TX |
| 2002-06-26 | 281-306-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPLENDORA | TX |
| 2002-06-19 | 281-220-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-06-18 | 281-301-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | BAMMEL | TX |
| 2002-06-17 | 281-248-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | BAMMEL | TX |
| 2002-06-17 | 281-248-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BAMMEL | TX |
| 2002-05-21 | 281-394-2XXX | 2000–2999 | Assigned | ETS TELEPHONE COMPANY, INC. | 2091 | KATY | TX |
| 2002-05-15 | 281-622-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CLEVELAND | TX |
| 2002-04-17 | 281-303-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEACH CITY | TX |
| 2002-04-12 | 281-205-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TOMBALL | TX |
| 2002-04-12 | 281-456-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SHELDON | TX |
| 2002-04-12 | 281-466-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPRING | TX |
| 2002-04-10 | 281-220-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-02-22 | 281-645-7XXX | 7000–7999 | Assigned | AT&T - LOCAL | 7421 | WESTFIELD | TX |
| 2002-02-13 | 281-762-5XXX | 5000–5999 | Assigned | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | RICHMNRNBG | TX |
| 2002-02-13 | 281-828-5XXX | 5000–5999 | Assigned | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | BARKER | TX |
| 2002-01-11 | 281-898-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | APOLLO | TX |
| 2001-12-28 | 281-817-3XXX | 3000–3999 | Assigned | AT&T - LOCAL | 7421 | DEER PARK | 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.