NumberResearchRecent thousands-block assignments
18 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 |
|---|---|---|---|---|---|---|---|
| 2011-06-08 | 661-402-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | PLDL AGDL | CA |
| 2011-06-08 | 661-422-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | PLDL LNVY | CA |
| 2011-06-06 | 661-388-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2011-06-01 | 661-878-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLDL PLDL | CA |
| 2011-05-27 | 661-230-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EDWARDS | CA |
| 2011-05-27 | 661-368-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD NORTH | CA |
| 2011-05-27 | 661-368-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD NORTH | CA |
| 2011-05-27 | 661-402-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL AGDL | CA |
| 2011-05-27 | 661-454-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DELANO | CA |
| 2011-05-27 | 661-750-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TEHACHAPI | CA |
| 2011-05-26 | 661-232-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MOJAVE | CA |
| 2011-05-26 | 661-279-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROSAMOND | CA |
| 2011-05-26 | 661-289-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LEBEC | CA |
| 2011-05-26 | 661-292-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SHAFTER | CA |
| 2011-05-26 | 661-438-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WASCO | CA |
| 2011-05-26 | 661-532-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BIG BUTTE | CA |
| 2011-05-26 | 661-552-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EARLIMART | CA |
| 2011-05-26 | 661-622-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLDL LNVY | CA |
| 2011-05-26 | 661-825-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TEHACHAPI | CA |
| 2011-05-25 | 661-401-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2011-05-25 | 661-474-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DELANO | CA |
| 2011-05-23 | 661-474-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DELANO | CA |
| 2011-05-23 | 661-474-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DELANO | CA |
| 2011-05-18 | 661-241-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2011-05-18 | 661-241-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2011-05-18 | 661-381-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2011-05-18 | 661-847-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2011-05-09 | 661-617-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2011-05-06 | 661-347-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA SGCC | CA |
| 2011-05-06 | 661-360-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA SGCC | CA |
| 2011-05-06 | 661-360-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA SGCC | CA |
| 2011-05-06 | 661-401-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2011-05-06 | 661-401-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2011-05-06 | 661-401-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2011-05-06 | 661-673-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNCA SGCC | CA |
| 2011-04-28 | 661-206-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LANCASTER | CA |
| 2011-04-28 | 661-388-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA NHCS | CA |
| 2011-04-28 | 661-388-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA NHCS | CA |
| 2011-04-28 | 661-728-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LANCASTER | CA |
| 2011-04-26 | 661-789-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | PLDL PLDL | CA |
| 2011-04-25 | 661-766-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CUYAMA | CA |
| 2011-04-21 | 661-829-7XXX | 7000–7999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD NORTH | CA |
| 2011-04-13 | 661-579-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2011-04-13 | 661-674-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2011-04-13 | 661-952-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2011-04-12 | 661-544-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2011-04-06 | 661-654-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2011-04-06 | 661-827-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2011-03-29 | 661-289-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LEBEC | CA |
| 2011-03-25 | 661-468-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLDL AGDL | 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.