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 251
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 |
|---|---|---|---|---|---|---|---|
| 2016-02-09 | 251-250-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AL | 604E | BAYMINETTE | AL |
| 2016-02-09 | 251-250-1XXX | 1000–1999 | Assigned | ONVOY, LLC - AL | 604E | BAYMINETTE | AL |
| 2016-02-05 | 251-255-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AL | 604E | EVERGREEN | AL |
| 2016-02-05 | 251-255-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AL | 604E | EVERGREEN | AL |
| 2016-02-05 | 251-387-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AL | 604E | JACKSON | AL |
| 2016-02-05 | 251-744-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AL | 604E | JACKSON | AL |
| 2016-02-04 | 251-241-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AL | 604E | BREWTON | AL |
| 2016-02-04 | 251-241-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | BREWTON | AL |
| 2016-02-03 | 251-270-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AL | 604E | FAIRHOPE | AL |
| 2016-02-03 | 251-270-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AL | 604E | FAIRHOPE | AL |
| 2016-01-27 | 251-237-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AL | 604E | FLOMATON | AL |
| 2016-01-27 | 251-237-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AL | 604E | FLOMATON | AL |
| 2016-01-07 | 251-504-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | FOLEY | AL |
| 2016-01-06 | 251-408-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MOBILE | AL |
| 2016-01-06 | 251-414-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MOBILE | AL |
| 2016-01-06 | 251-436-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MOBILE | AL |
| 2015-12-30 | 251-378-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-12-18 | 251-321-7XXX | 7000–7999 | Assigned | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | ATMORE | AL |
| 2015-12-18 | 251-509-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MOBILE | AL |
| 2015-11-23 | 251-220-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-1XXX | 1000–1999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-23 | 251-220-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-11-13 | 251-472-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-11-13 | 251-472-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-11-10 | 251-800-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-10-30 | 251-309-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AL | 8271 | BAYOUBATRE | AL |
| 2015-10-20 | 251-800-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-10-06 | 251-207-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | BELLEFONTN | AL |
| 2015-10-06 | 251-406-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MOBILE | AL |
| 2015-09-30 | 251-227-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | EVERGREEN | AL |
| 2015-09-28 | 251-239-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | BAYMINETTE | AL |
| 2015-09-28 | 251-270-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | FAIRHOPE | AL |
| 2015-09-24 | 251-597-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | FOLEY | AL |
| 2015-09-24 | 251-800-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AL | 8271 | MOBILE | AL |
| 2015-09-22 | 251-304-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | MOBILE | AL |
| 2015-09-22 | 251-439-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | MOBILE | AL |
| 2015-09-22 | 251-441-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | MOBILE | AL |
| 2015-09-16 | 251-405-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | MOBILE | AL |
| 2015-09-10 | 251-316-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | MOBILE | AL |
| 2015-08-18 | 251-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-08-18 | 251-800-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-08-18 | 251-800-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AL | 604E | MOBILE | AL |
| 2015-07-27 | 251-302-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AL | 8271 | MONROEVL | AL |
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.