NumberResearchRecent thousands-block assignments
22 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 559
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 |
|---|---|---|---|---|---|---|---|
| 2022-04-27 | 559-943-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DEL REY | CA |
| 2022-04-26 | 559-649-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CLOVIS | CA |
| 2022-04-25 | 559-752-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | TIPTON | CA |
| 2022-04-25 | 559-963-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | LATON | CA |
| 2022-04-20 | 559-773-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| 2022-04-19 | 559-576-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2022-04-12 | 559-340-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | DUNLAP | CA |
| 2022-04-12 | 559-716-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | MADERA | CA |
| 2022-04-12 | 559-809-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-04-12 | 559-993-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2022-03-25 | 559-649-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CLOVIS | CA |
| 2022-03-25 | 559-758-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PARLIER | CA |
| 2022-03-25 | 559-955-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2022-03-23 | 559-910-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | GRANTGROVE | CA |
| 2022-03-21 | 559-378-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2022-03-21 | 559-378-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2022-03-21 | 559-510-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2022-03-21 | 559-607-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2022-03-21 | 559-607-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2022-03-21 | 559-902-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SANGER | CA |
| 2022-03-21 | 559-902-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SANGER | CA |
| 2022-03-21 | 559-902-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SANGER | CA |
| 2022-03-21 | 559-990-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SANGER | CA |
| 2022-03-18 | 559-220-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| 2022-03-18 | 559-556-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2022-03-16 | 559-616-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TULARE | CA |
| 2022-03-16 | 559-616-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TULARE | CA |
| 2022-03-15 | 559-564-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WOODLAKE | CA |
| 2022-03-15 | 559-757-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PIXLEY | CA |
| 2022-03-08 | 559-955-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | TIVYVALLEY | CA |
| 2022-03-02 | 559-993-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | VISALIA | CA |
| 2022-02-28 | 559-483-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SPRINGVL | CA |
| 2022-02-25 | 559-378-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TULARE | CA |
| 2022-02-25 | 559-758-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PARLIER | CA |
| 2022-02-25 | 559-768-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2022-02-25 | 559-768-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2022-02-25 | 559-929-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2022-02-25 | 559-929-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2022-02-25 | 559-929-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2022-02-24 | 559-939-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FRESNO | CA |
| 2022-02-21 | 559-669-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2022-02-21 | 559-669-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | 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.