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
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2003-09-11 | 415-200-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2003-09-11 | 415-200-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2003-09-11 | 415-216-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2003-09-10 | 415-200-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2003-08-21 | 415-366-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BELVEDERE | CA |
| 2003-08-06 | 415-335-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2003-08-06 | 415-335-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2003-08-06 | 415-335-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2003-08-05 | 415-413-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CORTEMADRA | CA |
| 2003-08-05 | 415-877-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MILLVALLEY | CA |
| 2003-06-30 | 415-513-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC CNTRL | CA |
| 2003-06-24 | 415-408-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | NOVATO | CA |
| 2003-05-27 | 415-318-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC CNTRL | CA |
| 2003-05-27 | 415-318-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC CNTRL | CA |
| 2003-05-20 | 415-424-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-424-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-424-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-424-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-05-20 | 415-571-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-03-25 | 415-240-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-25 | 415-240-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC CNTRL | CA |
| 2003-03-03 | 415-367-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAUSALITO | CA |
| 2003-03-03 | 415-630-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NICASIO | CA |
| 2003-02-07 | 415-259-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAN RAFAEL | CA |
| 2003-02-07 | 415-259-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAN RAFAEL | CA |
| 2003-02-07 | 415-259-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAN RAFAEL | CA |
| 2003-01-31 | 415-374-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNFC CNTRL | CA |
| 2003-01-14 | 415-324-3XXX | 3000–3999 | Assigned | AT&T - LOCAL | 7421 | SAUSALITO | CA |
| 2003-01-08 | 415-573-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-08 | 415-573-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-08 | 415-573-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-08 | 415-573-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-08 | 415-573-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-02 | 415-424-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-02 | 415-424-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-02 | 415-424-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | CA |
| 2003-01-02 | 415-424-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNFC MT-EV | 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.