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 |
|---|---|---|---|---|---|---|---|
| 2017-04-11 | 559-337-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | BADGER | CA |
| 2017-04-11 | 559-390-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | ALPAUGH | CA |
| 2017-04-11 | 559-991-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2017-04-11 | 559-991-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2017-04-11 | 559-992-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | CORCORAN | CA |
| 2017-04-10 | 559-594-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EXETER | CA |
| 2017-03-30 | 559-542-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SPRINGVL | CA |
| 2017-03-30 | 559-542-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SPRINGVL | CA |
| 2017-03-30 | 559-819-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2017-03-30 | 559-821-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | COALINGA | CA |
| 2017-03-30 | 559-837-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2017-03-30 | 559-878-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | FRESNO | CA |
| 2017-03-24 | 559-705-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2017-03-24 | 559-705-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2017-03-23 | 559-701-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2017-03-21 | 559-296-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FIREBAUGH | CA |
| 2017-03-20 | 559-705-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | FRESNO | CA |
| 2017-03-15 | 559-586-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LINDSAY | CA |
| 2017-03-15 | 559-597-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LEMON COVE | CA |
| 2017-03-15 | 559-775-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | CHOWCHILLA | CA |
| 2017-03-15 | 559-787-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | TIVYVALLEY | CA |
| 2017-03-14 | 559-282-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | AVENAL | CA |
| 2017-03-14 | 559-460-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | SELMA | CA |
| 2017-03-14 | 559-551-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | REEDLEY | CA |
| 2017-03-14 | 559-601-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CARUTHERS | CA |
| 2017-03-14 | 559-633-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LEMOORE | CA |
| 2017-03-14 | 559-646-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | PARLIER | CA |
| 2017-03-14 | 559-648-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | DINUBA | CA |
| 2017-03-14 | 559-653-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | FOWLER | CA |
| 2017-03-14 | 559-744-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | SPRINGVL | CA |
| 2017-03-14 | 559-794-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | HANFORD | CA |
| 2017-03-14 | 559-826-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CLOVIS | CA |
| 2017-03-14 | 559-831-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MADERA | CA |
| 2017-03-14 | 559-837-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | TULARE | CA |
| 2017-03-14 | 559-854-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | PORTERVL | CA |
| 2017-03-14 | 559-869-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | KINGSBURG | CA |
| 2017-03-14 | 559-876-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | SANGER | CA |
| 2017-03-14 | 559-943-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DEL REY | CA |
| 2017-03-14 | 559-961-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | COALINGA | CA |
| 2017-03-06 | 559-293-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | FRESNO | CA |
| 2017-03-06 | 559-293-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | FRESNO | CA |
| 2017-03-02 | 559-293-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2017-03-02 | 559-293-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2017-03-02 | 559-293-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2017-03-02 | 559-725-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2017-03-02 | 559-837-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2017-03-02 | 559-854-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2017-03-02 | 559-854-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2017-02-23 | 559-404-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | COALINGA | CA |
| 2017-02-23 | 559-465-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | THREERIVRS | 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.