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
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-04-03 | 628-310-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-310-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-310-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-310-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-310-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-310-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-04-03 | 628-377-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | IGNACIO | CA |
| 2024-03-28 | 628-279-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2024-03-28 | 628-279-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2024-03-27 | 628-295-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2024-03-27 | 628-298-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-27 | 628-298-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-27 | 628-303-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-27 | 628-303-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-27 | 628-303-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-27 | 628-303-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-27 | 628-303-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-27 | 628-303-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-03-25 | 628-293-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | NICASIO | CA |
| 2024-03-25 | 628-295-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN RAFAEL | CA |
| 2024-03-25 | 628-295-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN RAFAEL | CA |
| 2024-03-20 | 628-301-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | NOVATO | CA |
| 2024-03-18 | 628-303-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2024-03-18 | 628-303-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2024-03-18 | 628-303-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2024-03-18 | 628-303-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2024-03-14 | 628-298-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-14 | 628-298-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-14 | 628-298-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-14 | 628-298-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC JUNPR | CA |
| 2024-03-08 | 628-297-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC MT-EV | CA |
| 2024-03-06 | 628-279-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2024-03-06 | 628-292-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-03-06 | 628-292-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-03-06 | 628-292-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-03-06 | 628-294-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2024-03-06 | 628-301-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2024-03-06 | 628-302-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CORTEMADRA | CA |
| 2024-03-06 | 628-377-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | IGNACIO | CA |
| 2024-03-06 | 628-682-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2024-03-06 | 628-998-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-03-06 | 628-998-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-03-06 | 628-998-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-03-06 | 628-998-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-03-06 | 628-998-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-02-29 | 628-290-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2024-02-29 | 628-298-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2024-02-29 | 628-298-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2024-02-21 | 628-285-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN RAFAEL | CA |
| 2024-02-21 | 628-297-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | 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.