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 |
|---|---|---|---|---|---|---|---|
| 2022-10-05 | 559-495-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FRESNO | CA |
| 2022-10-05 | 559-659-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FIREBAUGH | CA |
| 2022-10-05 | 559-767-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CLOVIS | CA |
| 2022-10-05 | 559-767-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CLOVIS | CA |
| 2022-10-05 | 559-767-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CLOVIS | CA |
| 2022-10-05 | 559-810-1XXX | 1000–1999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CARUTHERS | CA |
| 2022-10-05 | 559-867-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RIVERDALE | CA |
| 2022-10-05 | 559-945-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HURON | CA |
| 2022-10-03 | 559-767-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2022-09-30 | 559-576-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PORTERVL | CA |
| 2022-09-22 | 559-902-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SANGER | CA |
| 2022-09-21 | 559-402-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | BURREL | CA |
| 2022-09-21 | 559-402-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | BURREL | CA |
| 2022-09-21 | 559-402-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BURREL | CA |
| 2022-09-21 | 559-407-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | FIREBAUGH | CA |
| 2022-09-21 | 559-407-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | FIREBAUGH | CA |
| 2022-09-21 | 559-418-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HURON | CA |
| 2022-09-21 | 559-422-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | LATON | CA |
| 2022-09-21 | 559-427-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PIXLEY | CA |
| 2022-09-21 | 559-427-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | PIXLEY | CA |
| 2022-09-21 | 559-428-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | RIVERDALE | CA |
| 2022-09-21 | 559-461-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SEQUOIA | CA |
| 2022-09-21 | 559-461-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | SEQUOIA | CA |
| 2022-09-21 | 559-463-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | STRATFORD | CA |
| 2022-09-21 | 559-463-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | STRATFORD | CA |
| 2022-09-21 | 559-463-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | STRATFORD | CA |
| 2022-09-21 | 559-463-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | STRATFORD | CA |
| 2022-09-21 | 559-465-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | THREERIVRS | CA |
| 2022-09-21 | 559-466-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | TIPTON | CA |
| 2022-09-21 | 559-466-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | TIPTON | CA |
| 2022-09-21 | 559-466-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | TIPTON | CA |
| 2022-09-16 | 559-808-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | LINDSAY | CA |
| 2022-09-02 | 559-807-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-09-02 | 559-807-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-09-02 | 559-807-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-09-02 | 559-807-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-09-02 | 559-807-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-08-25 | 559-703-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-25 | 559-703-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2022-08-23 | 559-576-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | PORTERVL | CA |
| 2022-08-23 | 559-620-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SELMA | CA |
| 2022-08-22 | 559-814-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOWLER | 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.