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
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-08-14 | 415-655-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2007-08-10 | 415-418-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNFC MT-EV | CA |
| 2007-08-10 | 415-797-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2007-08-02 | 415-736-0XXX | 0000–0999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-08-02 | 415-736-9XXX | 9000–9999 | Assigned | PACIFIC BELL | 9740 | SNFC CNTRL | CA |
| 2007-07-31 | 415-912-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-912-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-912-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-912-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-912-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-913-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-913-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-913-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-31 | 415-948-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2007-07-23 | 415-347-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC JUNPR | CA |
| 2007-07-20 | 415-623-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-07-20 | 415-796-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC CNTRL | CA |
| 2007-07-20 | 415-796-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC CNTRL | CA |
| 2007-07-20 | 415-834-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC CNTRL | CA |
| 2007-07-11 | 415-312-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-07-11 | 415-312-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-07-11 | 415-312-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-07-11 | 415-312-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-07-11 | 415-683-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2007-07-11 | 415-683-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2007-07-03 | 415-326-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MILLVALLEY | CA |
| 2007-07-03 | 415-532-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2007-07-03 | 415-729-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SAUSALITO | CA |
| 2007-06-14 | 415-320-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | NOVATO | CA |
| 2007-06-14 | 415-658-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-06-12 | 415-379-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC MT-EV | CA |
| 2007-05-30 | 415-632-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2007-05-25 | 415-676-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-05-14 | 415-683-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2007-05-11 | 415-418-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC MT-EV | CA |
| 2007-05-11 | 415-418-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC MT-EV | CA |
| 2007-05-11 | 415-683-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFC MT-EV | CA |
| 2007-05-04 | 415-475-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IGNACIO | CA |
| 2007-05-02 | 415-832-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-05-02 | 415-832-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2007-04-17 | 415-655-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC CNTRL | CA |
| 2007-04-17 | 415-655-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | 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.