NumberResearchRecent thousands-block assignments
31 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 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 |
|---|---|---|---|---|---|---|---|
| 2006-06-29 | 530-809-0XXX | 0000–0999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CHICO | CA |
| 2006-06-29 | 530-809-1XXX | 1000–1999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CHICO | CA |
| 2006-06-23 | 530-638-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2006-06-23 | 530-990-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OROVILLE | CA |
| 2006-06-09 | 530-262-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2006-06-09 | 530-635-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MARYSVILLE | CA |
| 2006-06-09 | 530-745-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AUBN MAIN | CA |
| 2006-06-07 | 530-601-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DAVIS | CA |
| 2006-05-26 | 530-693-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | OROVILLE | CA |
| 2006-05-25 | 530-350-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SHINGLESPG | CA |
| 2006-05-25 | 530-387-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SHINGLESPG | CA |
| 2006-05-25 | 530-781-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-05-25 | 530-781-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-05-25 | 530-781-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-05-18 | 530-410-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-05-16 | 530-665-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WOODLAND | CA |
| 2006-04-17 | 530-217-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2006-03-24 | 530-903-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PLVL WEST | CA |
| 2006-03-20 | 530-250-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUSANVILLE | CA |
| 2006-03-10 | 530-798-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRVY MAIN | CA |
| 2006-03-10 | 530-798-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRVY MAIN | CA |
| 2006-02-15 | 530-566-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICO | CA |
| 2006-02-09 | 530-231-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DAVIS | CA |
| 2006-02-09 | 530-287-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ALLEGHANY | CA |
| 2006-02-08 | 530-736-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RED BLUFF | CA |
| 2006-01-24 | 530-208-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SOUTHTAHOE | CA |
| 2006-01-24 | 530-363-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLVL WEST | CA |
| 2006-01-24 | 530-401-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AUBN MAIN | CA |
| 2006-01-24 | 530-401-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AUBN MAIN | CA |
| 2006-01-24 | 530-748-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLVL WEST | CA |
| 2006-01-24 | 530-748-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLVL WEST | CA |
| 2006-01-24 | 530-848-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WOODLAND | CA |
| 2006-01-23 | 530-574-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DAVIS | CA |
| 2006-01-23 | 530-574-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DAVIS | CA |
| 2006-01-20 | 530-262-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-262-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDDING | CA |
| 2006-01-20 | 530-588-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-01-20 | 530-588-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-01-20 | 530-588-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-01-20 | 530-588-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-01-20 | 530-588-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2006-01-19 | 530-844-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MARYSVILLE | CA |
| 2006-01-19 | 530-844-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MARYSVILLE | CA |
| 2006-01-19 | 530-844-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MARYSVILLE | CA |
| 2006-01-19 | 530-844-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MARYSVILLE | 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.