NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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, all time — NPA 661
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-03-06 | 661-928-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | 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 |
| 2024-09-09 | 661-647-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | 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 |
| 2022-10-11 | 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 |
| 2022-09-19 | 661-526-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | 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 |
| 2022-02-24 | 661-550-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2022-01-26 | 661-550-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2022-01-11 | 661-760-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BUTTONWLLW | CA |
| 2021-10-26 | 661-624-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-10-26 | 661-624-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-10-26 | 661-624-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-10-26 | 661-788-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-10-26 | 661-788-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-09-22 | 661-550-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2021-02-17 | 661-509-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-02-17 | 661-509-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2021-02-17 | 661-624-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-11-03 | 661-545-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2020-11-03 | 661-545-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2020-10-05 | 661-509-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-10-05 | 661-509-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-10-05 | 661-509-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-10-05 | 661-509-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-10-05 | 661-509-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2020-08-19 | 661-732-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2020-04-23 | 661-561-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2020-04-23 | 661-561-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2019-10-07 | 661-336-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2019-10-07 | 661-336-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2019-08-15 | 661-863-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2019-07-02 | 661-669-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2019-05-15 | 661-261-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2019-02-25 | 661-405-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LANCASTER | CA |
| 2018-09-25 | 661-515-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HI VISTA | CA |
| 2018-09-25 | 661-515-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HI VISTA | CA |
| 2018-09-25 | 661-515-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HI VISTA | CA |
| 2017-06-22 | 661-443-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALKERBSIN | CA |
| 2017-05-02 | 661-279-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ROSAMOND | CA |
| 2017-05-01 | 661-306-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAKEHUGHES | CA |
| 2017-02-23 | 661-239-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALKERBSIN | CA |
| 2017-02-23 | 661-258-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EDWARDS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.