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 |
|---|---|---|---|---|---|---|---|
| 2016-11-30 | 281-738-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | BEACH CITY | TX |
| 2016-10-26 | 281-375-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | BROOKSHIRE | TX |
| 2016-10-12 | 281-577-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PORTER | TX |
| 2016-10-12 | 281-577-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PORTER | TX |
| 2016-08-26 | 281-710-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2016-07-22 | 281-612-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | FRIENDSWD | TX |
| 2016-07-22 | 281-612-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | FRIENDSWD | TX |
| 2016-07-22 | 281-612-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | FRIENDSWD | TX |
| 2016-07-19 | 281-672-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | LEAGUECITY | TX |
| 2016-06-24 | 281-909-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SEABROOK | TX |
| 2016-06-22 | 281-429-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PORTER HTS | TX |
| 2016-06-17 | 281-743-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2016-06-10 | 281-645-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WESTFIELD | TX |
| 2016-03-24 | 281-909-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | SEABROOK | TX |
| 2016-03-24 | 281-909-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SEABROOK | TX |
| 2016-03-21 | 281-688-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HIGHLANDS | TX |
| 2016-03-09 | 281-909-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | SEABROOK | TX |
| 2016-03-09 | 281-909-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | SEABROOK | TX |
| 2016-03-07 | 281-645-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | WESTFIELD | TX |
| 2016-03-07 | 281-784-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | WESTFIELD | TX |
| 2016-03-04 | 281-601-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PORTER | TX |
| 2016-03-02 | 281-524-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KEMAH | TX |
| 2016-03-02 | 281-612-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | FRIENDSWD | TX |
| 2016-03-02 | 281-672-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LEAGUECITY | TX |
| 2016-03-01 | 281-767-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | ROSHARON | TX |
| 2016-03-01 | 281-767-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | ROSHARON | TX |
| 2016-02-18 | 281-672-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | LEAGUECITY | TX |
| 2016-02-18 | 281-672-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | LEAGUECITY | TX |
| 2016-02-17 | 281-612-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2016-02-17 | 281-612-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2016-01-05 | 281-666-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | CROSBY | TX |
| 2015-12-29 | 281-899-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2015-12-23 | 281-416-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 281-845-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2015-12-23 | 281-915-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2015-12-23 | 281-916-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2015-12-09 | 281-231-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WESTFIELD | TX |
| 2015-12-09 | 281-525-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LEAGUECITY | TX |
| 2015-11-30 | 281-783-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2015-11-30 | 281-962-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2015-11-25 | 281-710-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | ARCOLA | TX |
| 2015-11-25 | 281-710-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | ARCOLA | TX |
| 2015-11-09 | 281-884-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2015-10-22 | 281-692-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANVEL | TX |
| 2015-10-22 | 281-692-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANVEL | TX |
| 2015-10-16 | 281-560-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | HSTNSUBURB | TX |
| 2015-10-09 | 281-872-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | BAMMEL | TX |
| 2015-09-30 | 281-432-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLEVELAND | TX |
| 2015-08-11 | 281-612-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | FRIENDSWD | TX |
| 2015-08-05 | 281-503-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PORTER HTS | 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.