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 |
|---|---|---|---|---|---|---|---|
| 2014-12-22 | 559-652-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2014-12-22 | 559-652-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2014-12-10 | 559-826-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2014-12-08 | 559-754-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VISALIA | CA |
| 2014-12-05 | 559-368-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2014-12-05 | 559-368-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2014-12-05 | 559-368-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TULARE | CA |
| 2014-12-05 | 559-410-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | HANFORD | CA |
| 2014-12-05 | 559-725-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2014-12-02 | 559-339-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTERVL | CA |
| 2014-12-02 | 559-785-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRESNO | CA |
| 2014-12-01 | 559-754-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | VISALIA | CA |
| 2014-12-01 | 559-754-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | VISALIA | CA |
| 2014-11-26 | 559-785-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | FRESNO | CA |
| 2014-11-26 | 559-826-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CLOVIS | CA |
| 2014-11-26 | 559-826-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CLOVIS | CA |
| 2014-11-26 | 559-826-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | CLOVIS | CA |
| 2014-11-19 | 559-726-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2014-11-19 | 559-726-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2014-11-14 | 559-785-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-14 | 559-795-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-13 | 559-943-2XXX | 2000–2999 | Assigned | XO CALIFORNIA, INC. | 7262 | DEL REY | CA |
| 2014-11-12 | 559-424-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MENDOTA | CA |
| 2014-11-11 | 559-754-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2014-11-11 | 559-754-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2014-11-07 | 559-373-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MADERA | CA |
| 2014-11-06 | 559-795-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2014-11-06 | 559-795-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2014-11-05 | 559-785-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-05 | 559-785-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2014-11-05 | 559-832-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FRESNO | CA |
| 2014-11-03 | 559-795-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2014-11-03 | 559-795-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2014-11-03 | 559-826-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2014-11-03 | 559-826-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2014-10-30 | 559-785-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2014-10-30 | 559-785-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2014-10-29 | 559-212-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2014-10-29 | 559-212-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2014-10-29 | 559-345-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LEMOORE | CA |
| 2014-10-29 | 559-471-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2014-10-29 | 559-536-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2014-10-29 | 559-536-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2014-10-29 | 559-586-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LINDSAY | CA |
| 2014-10-29 | 559-750-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | 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.