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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-12-29 | 661-420-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CUYAMA | CA |
| 2023-12-29 | 661-569-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | BKFD MAIN | CA |
| 2023-12-29 | 661-629-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BKFD NORTH | CA |
| 2023-12-29 | 661-629-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BKFD NORTH | CA |
| 2023-12-29 | 661-687-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2023-12-29 | 661-687-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2023-12-29 | 661-687-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2022-11-01 | 661-258-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | EDWARDS | 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 |
| 2022-09-14 | 661-452-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BERENDMESA | CA |
| 2022-06-22 | 661-279-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | ROSAMOND | CA |
| 2022-06-22 | 661-518-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | TEHACHAPI | CA |
| 2022-06-22 | 661-560-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | WASCO | CA |
| 2022-06-22 | 661-653-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | DELANO | CA |
| 2022-06-22 | 661-770-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | TAFT | CA |
| 2022-02-24 | 661-601-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BKFD NORTH | CA |
| 2021-09-22 | 661-420-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | CUYAMA | CA |
| 2021-09-22 | 661-420-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | CUYAMA | CA |
| 2021-09-22 | 661-420-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | CUYAMA | CA |
| 2021-09-22 | 661-420-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | CUYAMA | CA |
| 2021-06-27 | 661-788-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2021-06-27 | 661-788-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2021-06-27 | 661-788-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | BKFD SOUTH | CA |
| 2017-03-30 | 661-662-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BKFD MAIN | 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.