NumberResearchRecent thousands-block assignments
7 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 628
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 |
|---|---|---|---|---|---|---|---|
| 2015-04-20 | 628-242-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-04-15 | 628-242-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | SNFC CNTRL | CA |
| 2015-04-15 | 628-242-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | SNFC CNTRL | CA |
| 2015-04-10 | 628-242-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2015-04-10 | 628-242-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2015-04-10 | 628-888-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2015-04-08 | 628-888-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN RAFAEL | CA |
| 2015-04-01 | 628-200-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2015-04-01 | 628-300-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-04-01 | 628-300-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-04-01 | 628-300-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-04-01 | 628-300-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-04-01 | 628-300-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-03-30 | 628-999-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-03-30 | 628-999-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-03-30 | 628-999-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-03-30 | 628-999-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-03-30 | 628-999-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-03-26 | 628-500-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2015-03-26 | 628-500-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2015-03-26 | 628-500-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2015-03-17 | 628-300-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-03-17 | 628-300-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-03-17 | 628-300-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-03-17 | 628-300-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-03-17 | 628-300-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2015-03-16 | 628-444-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNFC CNTRL | CA |
| 2015-03-13 | 628-234-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN RAFAEL | CA |
| 2015-03-13 | 628-234-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN RAFAEL | CA |
| 2015-03-13 | 628-234-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN RAFAEL | CA |
| 2015-03-12 | 628-444-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC CNTRL | CA |
| 2015-03-12 | 628-444-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC CNTRL | CA |
| 2015-02-27 | 628-444-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-02-27 | 628-444-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-02-27 | 628-444-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2015-02-27 | 628-444-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNFC CNTRL | CA |
| 2014-11-20 | 628-444-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2014-11-20 | 628-444-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-600-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-800-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-800-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-800-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-800-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-800-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-11-14 | 628-900-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
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.