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 |
|---|---|---|---|---|---|---|---|
| 2010-06-03 | 661-636-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2010-06-01 | 661-864-7XXX | 7000–7999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD MAIN | CA |
| 2010-05-17 | 661-412-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BKFD SOUTH | CA |
| 2010-05-14 | 661-247-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ARVIN | CA |
| 2010-05-14 | 661-268-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL AGDL | CA |
| 2010-05-14 | 661-422-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL LNVY | CA |
| 2010-04-23 | 661-230-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | EDWARDS | CA |
| 2010-04-23 | 661-670-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | SNCA NHCS | CA |
| 2010-04-19 | 661-505-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNCA NHCS | CA |
| 2010-04-16 | 661-792-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MCFARLAND | CA |
| 2010-04-07 | 661-829-6XXX | 6000–6999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | BKFD NORTH | CA |
| 2010-04-05 | 661-241-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2010-04-05 | 661-381-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2010-04-05 | 661-381-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD SOUTH | CA |
| 2010-03-31 | 661-210-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA NHCS | CA |
| 2010-03-31 | 661-347-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNCA SGCC | CA |
| 2010-03-31 | 661-382-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLDL PLDL | CA |
| 2010-03-31 | 661-524-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LANCASTER | CA |
| 2010-03-23 | 661-334-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2010-03-15 | 661-977-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNCA SGCC | CA |
| 2010-03-12 | 661-385-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | EDWARDS | CA |
| 2010-03-11 | 661-859-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2010-03-09 | 661-379-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2010-03-09 | 661-380-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | BKFD MAIN | CA |
| 2010-03-05 | 661-474-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DELANO | CA |
| 2010-03-05 | 661-544-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2010-03-05 | 661-802-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2010-03-02 | 661-246-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD MAIN | CA |
| 2010-02-19 | 661-238-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TEHACHAPI | CA |
| 2010-02-12 | 661-678-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SNCA NHCS | CA |
| 2010-02-11 | 661-438-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | WASCO | CA |
| 2010-02-08 | 661-382-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | PLDL PLDL | CA |
| 2010-02-06 | 661-524-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2010-02-06 | 661-859-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BKFD MAIN | CA |
| 2010-02-05 | 661-579-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LANCASTER | CA |
| 2010-02-04 | 661-382-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLDL PLDL | CA |
| 2010-02-04 | 661-670-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2010-02-04 | 661-670-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNCA NHCS | CA |
| 2010-02-03 | 661-213-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD NORTH | CA |
| 2010-02-03 | 661-228-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HI VISTA | CA |
| 2010-02-03 | 661-235-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ROSAMOND | CA |
| 2010-02-03 | 661-237-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SHAFTER | CA |
| 2010-02-03 | 661-238-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TEHACHAPI | CA |
| 2010-02-03 | 661-240-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WASCO | CA |
| 2010-02-03 | 661-249-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BIG BUTTE | CA |
| 2010-02-03 | 661-262-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAKEHUGHES | CA |
| 2010-02-03 | 661-381-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2010-02-03 | 661-458-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MCFARLAND | CA |
| 2010-02-02 | 661-347-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCA SGCC | CA |
| 2010-01-26 | 661-240-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | WASCO | 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.