NumberResearchRecent thousands-block assignments
1 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 415
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2003-01-02 | 415-424-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2002-11-05 | 415-341-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-341-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-341-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-341-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-341-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-341-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-359-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-359-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-359-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-359-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-359-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2002-11-05 | 415-630-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NICASIO | CA |
| 2002-10-31 | 415-686-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2002-10-31 | 415-686-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2002-10-04 | 415-599-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NOVATO | CA |
| 2002-10-02 | 415-223-6XXX | 6000–6999 | Assigned | AT&T - LOCAL | 7421 | SAN RAFAEL | CA |
| 2002-07-22 | 415-573-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNFC MT-EV | CA |
| 2002-02-19 | 415-318-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC CNTRL | CA |
| 2001-04-09 | 415-236-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INVERNESS | CA |
| 2001-02-26 | 415-339-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAUSALITO | CA |
| 2001-02-05 | 415-874-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC CNTRL | CA |
| 2001-01-13 | 415-408-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | NOVATO | CA |
| 2001-01-13 | 415-408-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | NOVATO | CA |
| 2001-01-10 | 415-874-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNFC CNTRL | CA |
| 2001-01-10 | 415-874-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNFC CNTRL | CA |
| 2000-12-09 | 415-488-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SAN RAFAEL | CA |
| 2000-10-25 | 415-869-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC CNTRL | CA |
| 2000-10-11 | 415-944-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAUSALITO | CA |
| 2000-09-19 | 415-848-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNFC CNTRL | CA |
| 2000-09-05 | 415-384-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MILLVALLEY | CA |
| 2000-09-05 | 415-384-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MILLVALLEY | CA |
| 2000-09-05 | 415-475-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IGNACIO | CA |
| 2000-09-05 | 415-475-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IGNACIO | CA |
| 2000-09-05 | 415-475-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IGNACIO | CA |
| 2000-09-05 | 415-493-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NOVATO | CA |
| 2000-09-05 | 415-493-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NOVATO | CA |
| 2000-09-05 | 415-493-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NOVATO | CA |
| 2000-09-05 | 415-496-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CORTEMADRA | CA |
| 2000-08-28 | 415-413-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | CORTEMADRA | CA |
| 2000-08-17 | 415-408-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | NOVATO | CA |
| 2000-08-07 | 415-366-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BELVEDERE | CA |
| 2000-08-03 | 415-493-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NOVATO | CA |
| — | 415-762-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC CNTRL | 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.