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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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-22 | 628-316-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2024-10-22 | 628-316-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2024-10-22 | 628-316-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2024-10-14 | 628-307-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | IGNACIO | CA |
| 2024-10-14 | 628-307-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | IGNACIO | CA |
| 2024-10-11 | 628-291-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MILLVALLEY | CA |
| 2024-10-11 | 628-291-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MILLVALLEY | CA |
| 2024-10-11 | 628-294-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NOVATO | CA |
| 2024-10-11 | 628-301-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NOVATO | CA |
| 2024-10-09 | 628-308-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-10-07 | 628-577-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NICASIO | CA |
| 2024-09-25 | 628-315-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2024-09-19 | 628-305-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN RAFAEL | CA |
| 2024-09-19 | 628-305-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN RAFAEL | CA |
| 2024-09-16 | 628-312-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-09-16 | 628-312-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2024-09-06 | 628-279-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAUSALITO | 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 |
| 2024-08-26 | 628-766-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STNSN-BLNS | CA |
| 2024-08-19 | 628-302-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CORTEMADRA | CA |
| 2024-08-15 | 628-305-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2024-08-15 | 628-305-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | 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 |
| 2024-07-22 | 628-265-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | INVERNESS | CA |
| 2024-07-22 | 628-279-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SAUSALITO | CA |
| 2024-07-22 | 628-293-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NICASIO | CA |
| 2024-07-22 | 628-294-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NOVATO | CA |
| 2024-07-22 | 628-302-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CORTEMADRA | CA |
| 2024-07-22 | 628-304-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNFC JUNPR | CA |
| 2024-07-22 | 628-726-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNFC CNTRL | CA |
| 2024-07-22 | 628-726-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SNFC CNTRL | CA |
| 2024-07-22 | 628-977-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNFC MT-EV | CA |
| 2024-07-11 | 628-304-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC JUNPR | CA |
| 2024-07-11 | 628-304-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC JUNPR | 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.