NumberResearchRecent thousands-block assignments
16 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, 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 |
|---|---|---|---|---|---|---|---|
| 2016-03-24 | 661-558-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | BKFD MAIN | CA |
| 2016-03-10 | 661-771-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TEHACHAPI | CA |
| 2016-03-09 | 661-338-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | LAKEHUGHES | CA |
| 2016-03-09 | 661-338-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LAKEHUGHES | CA |
| 2016-03-09 | 661-727-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2016-03-09 | 661-727-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2016-03-08 | 661-372-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DELANO | CA |
| 2016-03-07 | 661-585-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLDL PLDL | CA |
| 2016-03-01 | 661-558-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2016-02-26 | 661-558-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2016-02-26 | 661-558-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2016-02-25 | 661-469-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BUTTONWLLW | CA |
| 2016-02-24 | 661-276-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | EDWARDS | CA |
| 2016-02-24 | 661-276-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | EDWARDS | CA |
| 2016-02-24 | 661-546-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BKFD MAIN | CA |
| 2016-02-23 | 661-535-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | BKFD NORTH | CA |
| 2016-02-23 | 661-535-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | BKFD NORTH | CA |
| 2016-02-23 | 661-583-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | PLDL PLDL | CA |
| 2016-02-23 | 661-585-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2016-02-23 | 661-585-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2016-02-23 | 661-585-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2016-02-19 | 661-309-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNCA SGCC | CA |
| 2016-02-12 | 661-339-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2016-02-12 | 661-582-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | LANCASTER | CA |
| 2016-02-12 | 661-582-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | LANCASTER | CA |
| 2016-02-12 | 661-727-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2016-02-11 | 661-413-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CUYAMA | CA |
| 2016-02-11 | 661-455-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | GLENNVILLE | CA |
| 2016-02-11 | 661-460-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | WALKERBSIN | CA |
| 2016-02-11 | 661-704-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MCKITTRICK | CA |
| 2016-02-10 | 661-568-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNCA NHCS | CA |
| 2016-02-10 | 661-568-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNCA NHCS | CA |
| 2016-02-10 | 661-568-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SNCA NHCS | CA |
| 2016-02-08 | 661-583-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2016-02-08 | 661-583-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2016-01-11 | 661-542-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNCA SGCC | CA |
| 2016-01-11 | 661-542-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SNCA SGCC | CA |
| 2015-12-30 | 661-462-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | BIG BUTTE | CA |
| 2015-12-30 | 661-463-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2015-12-30 | 661-463-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | HI VISTA | CA |
| 2015-12-30 | 661-532-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | BIG BUTTE | CA |
| 2015-12-11 | 661-490-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BKFD MAIN | CA |
| 2015-12-11 | 661-546-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BKFD MAIN | CA |
| 2015-12-07 | 661-542-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNCA SGCC | CA |
| 2015-12-07 | 661-542-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNCA SGCC | CA |
| 2015-11-25 | 661-582-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2015-11-24 | 661-421-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2015-11-24 | 661-421-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2015-11-24 | 661-543-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MCFARLAND | CA |
| 2015-11-24 | 661-543-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MCFARLAND | 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.