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 |
|---|---|---|---|---|---|---|---|
| 2004-04-28 | 530-903-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PLVL WEST | CA |
| 2004-04-19 | 530-953-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2004-04-15 | 530-208-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SOUTHTAHOE | CA |
| 2004-04-15 | 530-214-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TRUCKEE | CA |
| 2004-04-09 | 530-927-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | QUINCY | CA |
| 2004-04-07 | 530-601-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | DAVIS | CA |
| 2004-04-07 | 530-647-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLVL WEST | CA |
| 2004-04-01 | 530-415-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2004-03-05 | 530-368-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AUBN MAIN | CA |
| 2004-02-23 | 530-903-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLVL WEST | CA |
| 2004-02-13 | 530-953-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2004-02-05 | 530-370-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BIGGS | CA |
| 2004-02-02 | 530-351-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2004-02-02 | 530-351-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2004-01-07 | 530-415-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2004-01-05 | 530-953-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2003-12-31 | 530-354-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2003-12-31 | 530-403-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | OROVILLE | CA |
| 2003-12-31 | 530-651-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLVL WEST | CA |
| 2003-12-31 | 530-651-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLVL WEST | CA |
| 2003-10-10 | 530-205-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GRVY MAIN | CA |
| 2003-10-10 | 530-205-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GRVY MAIN | CA |
| 2003-10-10 | 530-263-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRVY MAIN | CA |
| 2003-10-10 | 530-351-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2003-10-10 | 530-351-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2003-10-09 | 530-264-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | NEVADACITY | CA |
| 2003-10-09 | 530-278-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | GRVY SOUTH | CA |
| 2003-10-09 | 530-292-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NOSAN JUAN | CA |
| 2003-10-09 | 530-344-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLVL WEST | CA |
| 2003-10-09 | 530-350-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SHINGLESPG | CA |
| 2003-10-09 | 530-453-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NICOLAUS | CA |
| 2003-10-09 | 530-580-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | NTAH THCY | CA |
| 2003-10-09 | 530-695-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | LIVE OAK | CA |
| 2003-10-09 | 530-862-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | DOWNIEVL | CA |
| 2003-10-08 | 530-269-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | AUBN NORTH | CA |
| 2003-10-08 | 530-334-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | GEORGETOWN | CA |
| 2003-10-08 | 530-456-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | GRIDLEY | CA |
| 2003-10-08 | 530-633-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | WHEATLAND | CA |
| 2003-09-29 | 530-230-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2003-09-26 | 530-276-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2003-09-23 | 530-204-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | DAVIS | CA |
| 2003-09-23 | 530-207-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | WOODLAND | CA |
| 2003-09-23 | 530-216-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MARYSVILLE | CA |
| 2003-09-23 | 530-217-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | AUBN MAIN | CA |
| 2003-09-23 | 530-303-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | PLVL WEST | CA |
| 2003-09-23 | 530-313-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SHINGLESPG | CA |
| 2003-09-23 | 530-480-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BLAIRSDEN | CA |
| 2003-09-22 | 530-359-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | FRENCHGLCH | CA |
| 2003-09-22 | 530-385-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | GERBER | CA |
| 2003-09-22 | 530-430-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | SIERRAVL | 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.