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 |
|---|---|---|---|---|---|---|---|
| 2008-07-21 | 661-836-5XXX | 5000–5999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD SOUTH | CA |
| 2008-07-16 | 661-480-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLDL PLDL | CA |
| 2008-07-16 | 661-750-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TEHACHAPI | CA |
| 2008-07-08 | 661-368-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BKFD NORTH | CA |
| 2008-07-02 | 661-526-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2008-06-30 | 661-621-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNCA SGCC | CA |
| 2008-06-30 | 661-621-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNCA SGCC | CA |
| 2008-06-30 | 661-709-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DELANO | CA |
| 2008-06-16 | 661-615-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | BKFD NORTH | CA |
| 2008-06-09 | 661-617-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2008-06-05 | 661-524-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2008-06-02 | 661-200-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | SNCA NHCS | CA |
| 2008-06-02 | 661-617-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | BKFD SOUTH | CA |
| 2008-05-29 | 661-374-8XXX | 8000–8999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD MAIN | CA |
| 2008-05-29 | 661-748-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | BKFD MAIN | CA |
| 2008-05-28 | 661-524-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LANCASTER | CA |
| 2008-05-28 | 661-579-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | LANCASTER | CA |
| 2008-05-13 | 661-200-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCA NHCS | CA |
| 2008-05-13 | 661-414-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCA NHCS | CA |
| 2008-05-13 | 661-654-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BKFD SOUTH | CA |
| 2008-05-13 | 661-695-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | BKFD NORTH | CA |
| 2008-05-13 | 661-720-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | DELANO | CA |
| 2008-05-13 | 661-771-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | TEHACHAPI | CA |
| 2008-05-13 | 661-771-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | TEHACHAPI | CA |
| 2008-05-13 | 661-827-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | BKFD SOUTH | CA |
| 2008-05-12 | 661-802-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LANCASTER | CA |
| 2008-05-12 | 661-802-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LANCASTER | CA |
| 2008-05-09 | 661-233-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2008-05-09 | 661-952-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LANCASTER | CA |
| 2008-05-07 | 661-368-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BKFD NORTH | CA |
| 2008-05-05 | 661-200-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNCA NHCS | CA |
| 2008-05-05 | 661-371-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2008-05-05 | 661-371-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2008-05-05 | 661-424-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNCA SGCC | CA |
| 2008-05-05 | 661-859-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2008-05-05 | 661-859-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2008-04-16 | 661-735-3XXX | 3000–3999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD SOUTH | CA |
| 2008-04-04 | 661-208-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLDL PLDL | CA |
| 2008-04-04 | 661-233-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLDL PLDL | CA |
| 2008-04-03 | 661-376-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2008-04-03 | 661-412-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BKFD SOUTH | CA |
| 2008-04-03 | 661-794-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2008-04-03 | 661-998-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2008-04-03 | 661-998-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2008-04-02 | 661-902-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | LANCASTER | CA |
| 2008-03-19 | 661-367-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNCA SGCC | CA |
| 2008-03-19 | 661-367-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNCA SGCC | CA |
| 2008-03-18 | 661-903-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ARVIN | CA |
| 2008-03-11 | 661-679-7XXX | 7000–7999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD NORTH | CA |
| 2008-03-06 | 661-526-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL PLDL | 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.