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 |
|---|---|---|---|---|---|---|---|
| 2015-08-05 | 281-643-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | MANVEL | TX |
| 2015-08-05 | 281-962-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SHELDON | TX |
| 2015-07-29 | 281-915-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | ARCOLA | TX |
| 2015-07-07 | 281-315-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BAMMEL | TX |
| 2015-07-06 | 281-603-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2015-07-06 | 281-603-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2015-07-06 | 281-603-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2015-07-06 | 281-603-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2015-07-06 | 281-607-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANVEL | TX |
| 2015-07-06 | 281-607-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANVEL | TX |
| 2015-07-06 | 281-710-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2015-07-06 | 281-710-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2015-07-01 | 281-644-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KATY | TX |
| 2015-07-01 | 281-665-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KATY | TX |
| 2015-07-01 | 281-665-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KATY | TX |
| 2015-06-29 | 281-967-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DICKINSON | TX |
| 2015-06-05 | 281-771-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2015-04-21 | 281-502-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HIGHLANDS | TX |
| 2015-04-21 | 281-666-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CROSBY | TX |
| 2015-04-21 | 281-916-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | KEMAH | TX |
| 2015-04-21 | 281-934-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BROOKSHIRE | TX |
| 2015-04-20 | 281-767-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROSHARON | TX |
| 2015-04-16 | 281-915-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ARCOLA | TX |
| 2015-02-26 | 281-525-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LEAGUECITY | TX |
| 2015-02-26 | 281-869-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WESTFIELD | TX |
| 2015-01-27 | 281-972-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | ARCOLA | TX |
| 2015-01-27 | 281-972-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | ARCOLA | TX |
| 2015-01-21 | 281-962-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SHELDON | TX |
| 2015-01-21 | 281-962-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SHELDON | TX |
| 2015-01-16 | 281-503-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PORTER HTS | TX |
| 2015-01-16 | 281-545-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | SMITHERSLK | TX |
| 2015-01-16 | 281-942-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SEABROOK | TX |
| 2015-01-12 | 281-428-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BAYTOWN | TX |
| 2015-01-09 | 281-839-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-12-22 | 281-223-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLEVELAND | TX |
| 2014-12-22 | 281-223-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLEVELAND | TX |
| 2014-12-08 | 281-425-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-12-08 | 281-425-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-12-08 | 281-837-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-12-08 | 281-837-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-12-08 | 281-838-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2014-11-26 | 281-356-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2014-11-26 | 281-766-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2014-11-26 | 281-789-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2014-11-24 | 281-666-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | CROSBY | TX |
| 2014-11-12 | 281-672-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | LEAGUECITY | TX |
| 2014-11-06 | 281-672-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | LEAGUECITY | TX |
| 2014-11-04 | 281-972-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | ARCOLA | TX |
| 2014-11-04 | 281-972-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | ARCOLA | TX |
| 2014-10-31 | 281-643-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | MANVEL | 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.