NumberResearchRecent thousands-block assignments
24 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 530
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 |
|---|---|---|---|---|---|---|---|
| 2018-02-26 | 530-815-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHICO | CA |
| 2018-02-23 | 530-609-1XXX | 1000–1999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | ALLEGHANY | CA |
| 2018-02-16 | 530-419-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | WOODLAND | CA |
| 2018-02-09 | 530-854-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OROVILLE | CA |
| 2018-02-05 | 530-631-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODLAND | CA |
| 2018-01-24 | 530-450-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | AUBN MAIN | CA |
| 2018-01-19 | 530-568-8XXX | 8000–8999 | Assigned | CAL-ORE COMMUNICATIONS, INC. - CA | 734E | MT SHASTA | CA |
| 2018-01-11 | 530-336-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | FALLRVRMLS | CA |
| 2018-01-04 | 530-782-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2017-12-21 | 530-317-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | PLVL WEST | CA |
| 2017-12-21 | 530-317-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | PLVL WEST | CA |
| 2017-12-19 | 530-619-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | COLUSA | CA |
| 2017-12-12 | 530-428-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LOYALTON | CA |
| 2017-12-12 | 530-684-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | MONTAGUE | CA |
| 2017-12-12 | 530-882-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | RICHVALE | CA |
| 2017-12-05 | 530-319-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | REDDING | CA |
| 2017-11-28 | 530-443-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MARYSVILLE | CA |
| 2017-11-14 | 530-599-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | MARYSVILLE | CA |
| 2017-11-14 | 530-599-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | MARYSVILLE | CA |
| 2017-11-14 | 530-599-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | MARYSVILLE | CA |
| 2017-10-25 | 530-557-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | NEVADACITY | CA |
| 2017-10-19 | 530-536-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TRUCKEE | CA |
| 2017-10-18 | 530-721-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SOUTHTAHOE | CA |
| 2017-09-25 | 530-364-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-09-25 | 530-364-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-09-19 | 530-408-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WEED | CA |
| 2017-09-15 | 530-809-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHICO | CA |
| 2017-09-15 | 530-809-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHICO | CA |
| 2017-09-15 | 530-809-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHICO | CA |
| 2017-09-12 | 530-443-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MARYSVILLE | CA |
| 2017-09-12 | 530-450-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2017-09-11 | 530-653-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AUBN NORTH | CA |
| 2017-08-29 | 530-364-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANDERSON | CA |
| 2017-08-21 | 530-961-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | CHICO | CA |
| 2017-08-14 | 530-337-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MONTGOYCRK | CA |
| 2017-08-10 | 530-537-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2017-08-10 | 530-648-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GRVY MAIN | CA |
| 2017-08-10 | 530-965-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICO | CA |
| 2017-08-10 | 530-965-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICO | CA |
| 2017-08-10 | 530-965-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICO | CA |
| 2017-08-10 | 530-979-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVIS | CA |
| 2017-08-08 | 530-364-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-08-08 | 530-407-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-08-07 | 530-449-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OAK RUN | CA |
| 2017-08-07 | 530-849-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SHINGLETN | CA |
| 2017-08-02 | 530-931-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SUSANVILLE | CA |
| 2017-07-31 | 530-854-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OROVILLE | CA |
| 2017-07-25 | 530-234-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RAVENDALE | CA |
| 2017-07-25 | 530-337-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MONTGOYCRK | CA |
| 2017-07-25 | 530-597-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PAYNES CRK | 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.