NumberResearchRecent thousands-block assignments
25 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 650
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 |
|---|---|---|---|---|---|---|---|
| 2005-10-06 | 650-793-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MT VIEW | CA |
| 2005-10-06 | 650-793-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MT VIEW | CA |
| 2005-09-23 | 650-815-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALO ALTO | CA |
| 2005-09-14 | 650-515-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SSNFRNCSCO | CA |
| 2005-09-14 | 650-515-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SSNFRNCSCO | CA |
| 2005-09-12 | 650-204-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MILLBRAE | CA |
| 2005-08-26 | 650-262-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PESCADERO | CA |
| 2005-08-26 | 650-425-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MATEO | CA |
| 2005-08-26 | 650-425-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MATEO | CA |
| 2005-08-26 | 650-539-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MATEO | CA |
| 2005-08-26 | 650-539-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MATEO | CA |
| 2005-08-25 | 650-491-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SSNFRNCSCO | CA |
| 2005-08-23 | 650-440-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | HALFMOONBY | CA |
| 2005-08-18 | 650-204-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MILLBRAE | CA |
| 2005-08-18 | 650-204-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MILLBRAE | CA |
| 2005-08-18 | 650-226-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNCRL-BLMT | CA |
| 2005-08-18 | 650-249-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REDWOOD CY | CA |
| 2005-08-18 | 650-260-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | REDWOOD CY | CA |
| 2005-08-18 | 650-264-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCRL-BLMT | CA |
| 2005-08-18 | 650-264-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCRL-BLMT | CA |
| 2005-08-18 | 650-264-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCRL-BLMT | CA |
| 2005-08-18 | 650-293-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA |
| 2005-08-18 | 650-293-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA |
| 2005-08-18 | 650-293-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA |
| 2005-08-18 | 650-392-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SSNFRNCSCO | CA |
| 2005-08-18 | 650-392-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SSNFRNCSCO | CA |
| 2005-08-18 | 650-392-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SSNFRNCSCO | CA |
| 2005-08-18 | 650-716-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REDWOOD CY | CA |
| 2005-08-18 | 650-716-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REDWOOD CY | CA |
| 2005-08-16 | 650-200-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MATEO | CA |
| 2005-08-10 | 650-276-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HALFMOONBY | CA |
| 2005-08-10 | 650-276-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HALFMOONBY | CA |
| 2005-08-05 | 650-235-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN MATEO | CA |
| 2005-08-05 | 650-235-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN MATEO | CA |
| 2005-08-04 | 650-521-0XXX | 0000–0999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PALO ALTO | CA |
| 2005-08-03 | 650-223-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PALO ALTO | CA |
| 2005-07-22 | 650-204-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MILLBRAE | CA |
| 2005-07-13 | 650-270-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SSNFRNCSCO | CA |
| 2005-07-11 | 650-887-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LOS ALTOS | CA |
| 2005-07-07 | 650-201-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SSNFRNCSCO | CA |
| 2005-06-29 | 650-455-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MILLBRAE | CA |
| 2005-06-22 | 650-241-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REDWOOD CY | CA |
| 2005-06-22 | 650-241-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REDWOOD CY | CA |
| 2005-06-22 | 650-241-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REDWOOD CY | CA |
| 2005-06-22 | 650-461-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PALO ALTO | CA |
| 2005-06-22 | 650-461-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PALO ALTO | CA |
| 2005-06-09 | 650-210-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MT VIEW | CA |
| 2005-06-09 | 650-235-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MATEO | CA |
| 2005-06-07 | 650-815-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALO ALTO | CA |
| 2005-06-02 | 650-392-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SSNFRNCSCO | 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.