NumberResearchRecent thousands-block assignments
21 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 |
|---|---|---|---|---|---|---|---|
| 2018-08-10 | 559-564-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WOODLAKE | CA |
| 2018-08-10 | 559-626-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ORANGECOVE | CA |
| 2018-08-09 | 559-597-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LEMON COVE | CA |
| 2018-07-13 | 559-397-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2018-07-13 | 559-853-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2018-07-13 | 559-878-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-07-13 | 559-878-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-06-28 | 559-236-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | GRANTGROVE | CA |
| 2018-06-28 | 559-336-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | MIRANTPHST | CA |
| 2018-06-28 | 559-340-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | DUNLAP | CA |
| 2018-06-28 | 559-343-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | STRATFORD | CA |
| 2018-06-28 | 559-418-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | HURON | CA |
| 2018-06-28 | 559-428-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | RIVERDALE | CA |
| 2018-06-28 | 559-597-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LEMON COVE | CA |
| 2018-06-28 | 559-640-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | THREERIVRS | CA |
| 2018-06-28 | 559-677-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BADGER | CA |
| 2018-06-28 | 559-678-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | SQUAW VLY | CA |
| 2018-06-28 | 559-745-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | SEQUOIA | CA |
| 2018-06-28 | 559-751-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | ALPAUGH | CA |
| 2018-06-28 | 559-752-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | TIPTON | CA |
| 2018-06-28 | 559-757-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | PIXLEY | CA |
| 2018-06-15 | 559-239-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LINDSAY | CA |
| 2018-06-15 | 559-424-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | MENDOTA | CA |
| 2018-06-15 | 559-520-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | BURREL | CA |
| 2018-06-15 | 559-525-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | SANJOAQUIN | CA |
| 2018-06-15 | 559-535-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | TERRABELLA | CA |
| 2018-06-15 | 559-769-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | WOODLAKE | CA |
| 2018-06-15 | 559-780-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CORCORAN | CA |
| 2018-06-15 | 559-787-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | TIVYVALLEY | CA |
| 2018-06-15 | 559-823-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | ORANGECOVE | CA |
| 2018-06-15 | 559-838-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | EXETER | CA |
| 2018-06-15 | 559-933-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | FIREBAUGH | CA |
| 2018-06-15 | 559-963-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | LATON | CA |
| 2018-05-30 | 559-878-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | FRESNO | CA |
| 2018-05-23 | 559-521-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DEL REY | CA |
| 2018-05-22 | 559-949-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | ALPAUGH | CA |
| 2018-05-08 | 559-330-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MADERA | CA |
| 2018-04-27 | 559-319-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRESNO | CA |
| 2018-04-19 | 559-226-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FRESNO | CA |
| 2018-04-05 | 559-854-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PORTERVL | CA |
| 2018-03-29 | 559-793-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2018-03-27 | 559-780-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CORCORAN | CA |
| 2018-03-21 | 559-550-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-03-21 | 559-566-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | THREERIVRS | CA |
| 2018-03-21 | 559-612-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-03-16 | 559-483-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SPRINGVL | CA |
| 2018-03-16 | 559-787-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2018-03-16 | 559-821-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | COALINGA | CA |
| 2018-03-16 | 559-826-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2018-03-16 | 559-991-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | 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.