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 |
|---|---|---|---|---|---|---|---|
| 2024-11-25 | 661-827-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-11-25 | 661-829-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD NORTH | CA |
| 2024-11-25 | 661-928-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-11-25 | 661-996-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2024-11-25 | 661-996-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2024-11-21 | 661-997-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MCFARLAND | CA |
| 2024-11-13 | 661-736-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2024-11-13 | 661-736-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2024-11-13 | 661-736-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2024-11-13 | 661-736-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARVIN | CA |
| 2024-11-12 | 661-594-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SHAFTER | CA |
| 2024-11-08 | 661-752-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | ROSAMOND | CA |
| 2024-11-01 | 661-851-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EARLIMART | CA |
| 2024-10-24 | 661-590-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WASCO | CA |
| 2024-10-23 | 661-646-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2024-10-23 | 661-646-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2024-10-23 | 661-646-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2024-10-23 | 661-646-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2024-10-23 | 661-647-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-10-23 | 661-647-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-10-23 | 661-647-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-10-23 | 661-647-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD SOUTH | CA |
| 2024-10-23 | 661-658-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2024-10-23 | 661-658-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2024-10-22 | 661-550-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BIG BUTTE | CA |
| 2024-10-22 | 661-793-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PLDL LNVY | CA |
| 2024-10-22 | 661-997-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MCFARLAND | CA |
| 2024-10-14 | 661-278-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDWARDS | CA |
| 2024-10-03 | 661-640-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BKFD NORTH | CA |
| 2024-10-03 | 661-647-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2024-10-03 | 661-647-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2024-10-02 | 661-541-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-996-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-09-26 | 661-279-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | ROSAMOND | CA |
| 2024-09-23 | 661-658-0XXX | 0000–0999 | Assigned | LEAP TELECOM, LLC | 616J | BKFD MAIN | CA |
| 2024-09-20 | 661-656-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-20 | 661-656-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2024-09-13 | 661-652-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2024-09-11 | 661-502-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2024-09-09 | 661-647-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2024-09-06 | 661-646-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | 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.