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 |
|---|---|---|---|---|---|---|---|
| 2010-02-19 | 559-472-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2010-02-19 | 559-800-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2010-02-19 | 559-800-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2010-02-12 | 559-489-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2010-02-10 | 559-415-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2010-02-08 | 559-339-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTERVL | CA |
| 2010-02-08 | 559-372-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | VISALIA | CA |
| 2010-02-06 | 559-513-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2010-02-06 | 559-513-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2010-02-06 | 559-513-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2010-02-06 | 559-513-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2010-02-04 | 559-309-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2010-02-04 | 559-309-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2010-02-04 | 559-353-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FRESNO | CA |
| 2010-02-04 | 559-470-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FRESNO | CA |
| 2010-02-04 | 559-470-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FRESNO | CA |
| 2010-02-03 | 559-249-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGECOVE | CA |
| 2010-02-03 | 559-258-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DEL REY | CA |
| 2010-02-03 | 559-296-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FIREBAUGH | CA |
| 2010-02-03 | 559-318-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SELMA | CA |
| 2010-02-03 | 559-343-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STRATFORD | CA |
| 2010-02-03 | 559-345-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LEMOORE | CA |
| 2010-02-03 | 559-376-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TERRABELLA | CA |
| 2010-02-03 | 559-382-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MENDOTA | CA |
| 2010-02-03 | 559-422-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LATON | CA |
| 2010-02-03 | 559-426-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PARLIER | CA |
| 2010-02-03 | 559-462-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SPRINGVL | CA |
| 2010-01-15 | 559-633-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LEMOORE | CA |
| 2009-12-30 | 559-421-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2009-12-16 | 559-472-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2009-12-14 | 559-383-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AVENAL | CA |
| 2009-12-09 | 559-473-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2009-12-02 | 559-426-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PARLIER | CA |
| 2009-11-24 | 559-524-6XXX | 6000–6999 | Assigned | FRONTIER CALIFORNIA INC. | 4420 | SANGER | CA |
| 2009-11-24 | 559-524-7XXX | 7000–7999 | Assigned | FRONTIER CALIFORNIA INC. | 4420 | SANGER | CA |
| 2009-11-13 | 559-570-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2009-11-11 | 559-421-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2009-11-09 | 559-254-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | PARLIER | CA |
| 2009-11-09 | 559-315-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | DINUBA | CA |
| 2009-11-09 | 559-460-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2009-11-09 | 559-543-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | HURON | CA |
| 2009-11-09 | 559-780-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CORCORAN | CA |
| 2009-11-09 | 559-813-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FOWLER | CA |
| 2009-11-09 | 559-934-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | COALINGA | CA |
| 2009-11-06 | 559-633-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LEMOORE | CA |
| 2009-11-03 | 559-600-0XXX | 0000–0999 | Assigned | PACIFIC BELL | 9740 | FRESNO | CA |
| 2009-11-03 | 559-600-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | FRESNO | CA |
| 2009-11-03 | 559-600-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | FRESNO | CA |
| 2009-11-03 | 559-600-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | FRESNO | CA |
| 2009-11-03 | 559-600-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | FRESNO | 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.