NumberResearchRecent thousands-block assignments
18 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 661
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 |
|---|---|---|---|---|---|---|---|
| 2025-08-27 | 661-240-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WASCO | CA |
| 2025-08-25 | 661-621-9XXX | 9000–9999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNCA SGCC | CA |
| 2025-08-19 | 661-671-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2025-08-06 | 661-500-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TAFT | CA |
| 2025-07-30 | 661-682-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | BKFD MAIN | CA |
| 2025-07-23 | 661-676-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2025-07-23 | 661-899-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2025-07-21 | 661-672-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-07-21 | 661-672-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-07-21 | 661-672-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-07-03 | 661-922-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DELANO | CA |
| 2025-06-10 | 661-772-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WASCO | CA |
| 2025-06-05 | 661-594-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SHAFTER | CA |
| 2025-06-04 | 661-374-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2025-05-30 | 661-672-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-05-30 | 661-672-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-05-30 | 661-672-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-05-30 | 661-672-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-05-21 | 661-500-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TAFT | CA |
| 2025-05-15 | 661-668-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EARLIMART | CA |
| 2025-05-12 | 661-964-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SNCA NHCS | CA |
| 2025-04-22 | 661-517-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-517-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-517-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-652-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-652-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-652-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-676-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-22 | 661-676-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-22 | 661-676-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-21 | 661-681-1XXX | 1000–1999 | Assigned | NUSO, LLC | 478J | BKFD NORTH | CA |
| 2025-04-14 | 661-671-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-671-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-671-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-680-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-04-14 | 661-680-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-04-14 | 661-680-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-04-08 | 661-248-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LEBEC | CA |
| 2025-03-21 | 661-642-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DELANO | CA |
| 2025-03-21 | 661-672-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-03-21 | 661-676-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2025-03-21 | 661-676-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2025-03-21 | 661-676-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2025-03-21 | 661-736-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-03-21 | 661-736-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-03-21 | 661-736-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-03-21 | 661-736-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2025-03-18 | 661-422-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PLDL LNVY | CA |
| 2025-03-18 | 661-465-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERENDMESA | CA |
| 2025-03-18 | 661-652-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | 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.