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 |
|---|---|---|---|---|---|---|---|
| 2005-09-20 | 661-233-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2005-09-20 | 661-233-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2005-09-20 | 661-607-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2005-09-20 | 661-802-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2005-09-19 | 661-817-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2005-09-16 | 661-702-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | SNCA NHCS | CA |
| 2005-09-13 | 661-615-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | BKFD NORTH | CA |
| 2005-09-13 | 661-839-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2005-09-12 | 661-414-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2005-09-12 | 661-753-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2005-09-12 | 661-753-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2005-09-07 | 661-316-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2005-09-07 | 661-414-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNCA NHCS | CA |
| 2005-09-07 | 661-414-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNCA NHCS | CA |
| 2005-08-25 | 661-839-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-08-25 | 661-839-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-08-25 | 661-839-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-08-25 | 661-839-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-08-18 | 661-449-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL PLDL | CA |
| 2005-08-17 | 661-431-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2005-08-17 | 661-699-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2005-08-17 | 661-699-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2005-08-17 | 661-699-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2005-08-17 | 661-742-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2005-08-17 | 661-742-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2005-08-17 | 661-742-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2005-08-17 | 661-742-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2005-08-04 | 661-202-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2005-07-26 | 661-229-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DELANO | CA |
| 2005-07-26 | 661-873-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-26 | 661-889-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-07-19 | 661-449-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2005-07-11 | 661-414-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNCA NHCS | CA |
| 2005-07-07 | 661-281-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2005-07-07 | 661-414-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2005-07-07 | 661-414-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2005-07-06 | 661-731-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EARLIMART | CA |
| 2005-07-05 | 661-268-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL AGDL | CA |
| 2005-07-05 | 661-320-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LEBEC | CA |
| 2005-07-05 | 661-338-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LAKEHUGHES | CA |
| 2005-07-05 | 661-438-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WASCO | CA |
| 2005-07-05 | 661-454-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DELANO | 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.