NumberResearchRecent thousands-block assignments
22 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 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 |
|---|---|---|---|---|---|---|---|
| 2004-02-20 | 559-455-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2004-02-13 | 559-817-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | LEMOORE | CA |
| 2004-02-11 | 559-381-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2004-02-05 | 559-257-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SELMA | CA |
| 2004-02-05 | 559-316-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FOWLER | CA |
| 2004-02-05 | 559-392-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2004-02-05 | 559-618-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TIVYVALLEY | CA |
| 2004-02-05 | 559-643-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REEDLEY | CA |
| 2004-02-05 | 559-682-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CARUTHERS | CA |
| 2004-02-05 | 559-823-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ORANGECOVE | CA |
| 2004-02-05 | 559-869-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | KINGSBURG | CA |
| 2004-01-26 | 559-347-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2004-01-14 | 559-718-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MADERA | CA |
| 2004-01-14 | 559-759-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2004-01-07 | 559-618-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2003-12-31 | 559-936-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2003-12-25 | 559-836-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | HANFORD | CA |
| 2003-12-17 | 559-314-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2003-12-17 | 559-904-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LEMOORE | CA |
| 2003-12-02 | 559-477-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | FRESNO | CA |
| 2003-11-17 | 559-472-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CLOVIS | CA |
| 2003-10-20 | 559-473-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2003-10-20 | 559-473-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2003-10-20 | 559-473-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2003-10-20 | 559-473-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2003-10-16 | 559-474-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MADERA | CA |
| 2003-10-16 | 559-474-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MADERA | CA |
| 2003-10-10 | 559-238-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KINGSBURG | CA |
| 2003-09-11 | 559-381-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2003-09-11 | 559-381-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2003-09-03 | 559-393-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REEDLEY | CA |
| 2003-09-03 | 559-393-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REEDLEY | CA |
| 2003-09-02 | 559-380-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2003-09-02 | 559-380-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2003-08-27 | 559-367-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRESNO | CA |
| 2003-08-05 | 559-230-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-230-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-241-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-243-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-244-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-244-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-248-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-916-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-916-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-05 | 559-916-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2003-08-04 | 559-936-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2003-08-04 | 559-936-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2003-08-04 | 559-936-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2003-07-16 | 559-474-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2003-07-16 | 559-474-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | 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.