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
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-11-15 | 661-601-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | BKFD NORTH | CA |
| 2022-11-09 | 661-597-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MOJAVE | CA |
| 2022-11-01 | 661-258-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | EDWARDS | CA |
| 2022-10-25 | 661-598-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2022-10-25 | 661-598-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2022-10-25 | 661-598-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2022-10-25 | 661-598-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2022-10-21 | 661-570-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2022-10-21 | 661-598-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2022-10-21 | 661-598-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2022-10-21 | 661-602-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2022-10-20 | 661-550-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BIG BUTTE | CA |
| 2022-10-19 | 661-225-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2022-10-19 | 661-361-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2022-10-13 | 661-531-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | ARVIN | CA |
| 2022-10-13 | 661-597-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | MOJAVE | CA |
| 2022-10-12 | 661-455-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | GLENNVILLE | CA |
| 2022-10-12 | 661-571-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | LANCASTER | CA |
| 2022-10-12 | 661-594-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SHAFTER | CA |
| 2022-10-11 | 661-602-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-10-11 | 661-602-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-10-10 | 661-501-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-10-05 | 661-242-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LEBEC | CA |
| 2022-10-05 | 661-258-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDWARDS | CA |
| 2022-10-05 | 661-770-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TAFT | CA |
| 2022-10-05 | 661-849-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EARLIMART | CA |
| 2022-10-03 | 661-571-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2022-09-23 | 661-571-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2022-09-23 | 661-571-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2022-09-23 | 661-571-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2022-09-23 | 661-571-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2022-09-21 | 661-239-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | WALKERBSIN | CA |
| 2022-09-21 | 661-239-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | WALKERBSIN | CA |
| 2022-09-21 | 661-552-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | EARLIMART | CA |
| 2022-09-21 | 661-552-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | EARLIMART | CA |
| 2022-09-21 | 661-780-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PLDL LNVY | CA |
| 2022-09-19 | 661-362-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2022-09-19 | 661-526-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2022-09-19 | 661-625-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2022-09-15 | 661-610-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2022-09-15 | 661-610-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2022-09-14 | 661-452-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BERENDMESA | CA |
| 2022-09-02 | 661-594-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SHAFTER | CA |
| 2022-08-26 | 661-570-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-08-26 | 661-570-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-08-24 | 661-601-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2022-08-24 | 661-601-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2022-08-24 | 661-601-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2022-08-24 | 661-601-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2022-08-24 | 661-601-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | 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.