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
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 |
|---|---|---|---|---|---|---|---|
| 2009-10-21 | 415-578-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN RAFAEL | CA |
| 2009-10-13 | 415-504-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC MT-EV | CA |
| 2009-10-13 | 415-625-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-10-13 | 415-633-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-10-13 | 415-644-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-10-13 | 415-658-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-10-13 | 415-779-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STNSN-BLNS | CA |
| 2009-10-13 | 415-779-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STNSN-BLNS | CA |
| 2009-10-13 | 415-779-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STNSN-BLNS | CA |
| 2009-10-13 | 415-779-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STNSN-BLNS | CA |
| 2009-10-12 | 415-320-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NOVATO | CA |
| 2009-10-12 | 415-320-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NOVATO | CA |
| 2009-10-12 | 415-729-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAUSALITO | CA |
| 2009-10-12 | 415-729-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAUSALITO | CA |
| 2009-10-12 | 415-763-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | IGNACIO | CA |
| 2009-10-12 | 415-763-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | IGNACIO | CA |
| 2009-10-12 | 415-891-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORTEMADRA | CA |
| 2009-10-12 | 415-891-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORTEMADRA | CA |
| 2009-10-07 | 415-702-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2009-10-07 | 415-879-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MILLVALLEY | CA |
| 2009-09-25 | 415-314-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2009-09-25 | 415-314-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC CNTRL | CA |
| 2009-09-24 | 415-291-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | SNFC CNTRL | CA |
| 2009-09-24 | 415-544-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | SNFC CNTRL | CA |
| 2009-09-24 | 415-827-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NOVATO | CA |
| 2009-09-24 | 415-944-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAUSALITO | CA |
| 2009-09-23 | 415-746-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2009-09-23 | 415-746-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2009-09-23 | 415-746-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2009-09-23 | 415-746-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2009-09-21 | 415-933-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC MT-EV | CA |
| 2009-09-21 | 415-933-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC MT-EV | CA |
| 2009-09-18 | 415-735-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2009-09-03 | 415-450-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2009-09-03 | 415-450-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN RAFAEL | CA |
| 2009-09-02 | 415-685-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2009-09-02 | 415-685-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2009-09-02 | 415-735-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2009-09-01 | 415-390-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | POINTREYES | CA |
| 2009-09-01 | 415-598-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NICASIO | CA |
| 2009-08-21 | 415-666-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2009-08-20 | 415-300-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN RAFAEL | CA |
| 2009-08-20 | 415-335-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC JUNPR | CA |
| 2009-08-20 | 415-335-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC JUNPR | CA |
| 2009-08-20 | 415-480-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAUSALITO | CA |
| 2009-08-20 | 415-483-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | IGNACIO | CA |
| 2009-08-20 | 415-684-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-08-20 | 415-685-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFC CNTRL | CA |
| 2009-08-20 | 415-938-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | POINTREYES | CA |
| 2009-08-19 | 415-881-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | IGNACIO | 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.