NumberResearchRecent thousands-block assignments
7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-02-21 | 628-297-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-21 | 628-297-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-21 | 628-297-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-21 | 628-297-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-21 | 628-297-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-21 | 628-297-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-02-16 | 628-295-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2024-02-07 | 628-866-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | BELVEDERE | CA |
| 2024-02-02 | 628-282-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC JUNPR | CA |
| 2024-01-25 | 628-338-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNFC MT-EV | CA |
| 2024-01-25 | 628-338-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNFC MT-EV | CA |
| 2024-01-23 | 628-294-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2024-01-23 | 628-294-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2024-01-19 | 628-279-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2024-01-19 | 628-292-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-01-19 | 628-292-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-01-19 | 628-294-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | NOVATO | CA |
| 2024-01-11 | 628-284-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-289-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-289-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-289-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-289-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-789-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-789-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 628-789-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-12-29 | 628-281-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SNFC CNTRL | CA |
| 2023-12-29 | 628-281-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | SNFC CNTRL | CA |
| 2023-12-29 | 628-281-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | SNFC CNTRL | CA |
| 2023-12-29 | 628-281-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | SNFC CNTRL | CA |
| 2023-12-29 | 628-284-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SNFC CNTRL | CA |
| 2023-12-28 | 628-295-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SAN RAFAEL | CA |
| 2023-12-28 | 628-295-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SAN RAFAEL | CA |
| 2023-12-28 | 628-295-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SAN RAFAEL | CA |
| 2023-12-28 | 628-338-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SNFC MT-EV | CA |
| 2023-12-28 | 628-338-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | SNFC MT-EV | CA |
| 2023-12-28 | 628-338-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SNFC MT-EV | CA |
| 2023-12-28 | 628-338-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | SNFC MT-EV | CA |
| 2023-12-13 | 628-338-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC MT-EV | CA |
| 2023-12-05 | 628-866-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BELVEDERE | CA |
| 2023-11-15 | 628-281-3XXX | 3000–3999 | Assigned | NUSO, LLC | 732J | SNFC CNTRL | CA |
| 2023-11-15 | 628-281-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-287-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-289-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-11-01 | 628-289-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-10-23 | 628-766-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | STNSN-BLNS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.