NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — NPA 628
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-12-10 | 628-315-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2025-12-10 | 628-315-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2025-12-10 | 628-315-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2025-11-28 | 628-466-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-316-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-316-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-316-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-316-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-998-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-998-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-998-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-07 | 628-998-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2025-11-06 | 628-254-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2025-11-06 | 628-329-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SAUSALITO | CA |
| 2025-10-31 | 628-310-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2025-10-31 | 628-310-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-10-09 | 628-308-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-09-25 | 628-315-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-08-30 | 628-312-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-29 | 628-309-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-29 | 628-309-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-29 | 628-309-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-29 | 628-309-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-29 | 628-309-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-08-19 | 628-302-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CORTEMADRA | CA |
| 2024-07-30 | 628-308-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-07-30 | 628-308-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-07-30 | 628-309-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-30 | 628-309-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-30 | 628-309-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-30 | 628-309-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-30 | 628-309-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-29 | 628-726-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-29 | 628-726-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-29 | 628-726-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-29 | 628-726-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-29 | 628-726-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-06-03 | 628-306-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-05-22 | 628-305-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN RAFAEL | CA |
| 2024-05-01 | 628-298-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2024-05-01 | 628-298-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.