NumberResearchRecent thousands-block assignments
18 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2005-02-24 | 661-350-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-02-24 | 661-350-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-02-24 | 661-350-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2005-02-23 | 661-364-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-364-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-364-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-808-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-808-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-808-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-808-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-808-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-23 | 661-817-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2005-02-11 | 661-215-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BKFD NORTH | CA |
| 2005-02-09 | 661-565-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2005-02-04 | 661-349-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL PLDL | CA |
| 2005-02-04 | 661-349-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL PLDL | CA |
| 2005-01-26 | 661-340-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2005-01-20 | 661-236-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2005-01-17 | 661-466-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2005-01-13 | 661-874-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2005-01-07 | 661-778-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DELANO | CA |
| 2005-01-07 | 661-932-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2005-01-06 | 661-347-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNCA SGCC | CA |
| 2005-01-06 | 661-600-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2005-01-04 | 661-565-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2004-12-22 | 661-932-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2004-12-20 | 661-916-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2004-12-13 | 661-860-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2004-12-10 | 661-219-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNCA NHCS | CA |
| 2004-12-09 | 661-600-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNCA NHCS | CA |
| 2004-12-08 | 661-202-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2004-12-08 | 661-243-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | BKFD NORTH | CA |
| 2004-12-08 | 661-466-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2004-12-07 | 661-309-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNCA SGCC | CA |
| 2004-11-17 | 661-932-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BKFD MAIN | CA |
| 2004-11-16 | 661-378-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2004-11-16 | 661-378-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2004-11-16 | 661-378-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2004-11-16 | 661-378-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2004-11-16 | 661-378-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BKFD MAIN | CA |
| 2004-11-15 | 661-310-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNCA NHCS | CA |
| 2004-11-15 | 661-310-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNCA NHCS | CA |
| 2004-11-12 | 661-361-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2004-11-12 | 661-361-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2004-11-12 | 661-361-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2004-11-12 | 661-361-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2004-10-28 | 661-916-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LANCASTER | CA |
| 2004-10-15 | 661-349-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLDL PLDL | CA |
| 2004-10-15 | 661-860-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2004-10-15 | 661-860-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.