NumberResearchRecent thousands-block assignments
9 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 707
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 |
|---|---|---|---|---|---|---|---|
| 2006-07-05 | 707-430-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | FRFLD-SUIS | CA |
| 2006-06-26 | 707-816-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FRFLD-SUIS | CA |
| 2006-06-12 | 707-294-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NAPA | CA |
| 2006-06-12 | 707-514-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VACAVILLE | CA |
| 2006-06-12 | 707-637-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NAPA | CA |
| 2006-06-08 | 707-454-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VACAVILLE | CA |
| 2006-06-02 | 707-832-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | EUREKA | CA |
| 2006-05-31 | 707-228-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-31 | 707-228-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-31 | 707-228-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-31 | 707-228-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-31 | 707-236-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-31 | 707-236-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SANTA ROSA | CA |
| 2006-05-12 | 707-980-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VALLEJO | CA |
| 2006-05-03 | 707-262-8XXX | 8000–8999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LAKEPORT | CA |
| 2006-05-03 | 707-276-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | UPPER LAKE | CA |
| 2006-05-03 | 707-278-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | KELSEYVL | CA |
| 2006-05-03 | 707-299-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | NAPA | CA |
| 2006-05-03 | 707-375-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | RIO VISTA | CA |
| 2006-05-03 | 707-439-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | FRFLD-SUIS | CA |
| 2006-05-03 | 707-455-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | VACAVILLE | CA |
| 2006-05-03 | 707-456-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WILLITS | CA |
| 2006-05-03 | 707-472-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | UKIAH | CA |
| 2006-05-03 | 707-473-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | HEALDSBURG | CA |
| 2006-05-03 | 707-497-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | EUREKA | CA |
| 2006-05-03 | 707-536-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SANTA ROSA | CA |
| 2006-05-03 | 707-556-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | VALLEJO | CA |
| 2006-05-03 | 707-676-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | DIXON | CA |
| 2006-05-03 | 707-692-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LOWER LAKE | CA |
| 2006-05-03 | 707-743-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | POTTER VLY | CA |
| 2006-05-03 | 707-779-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PTLM MAIN | CA |
| 2006-05-03 | 707-796-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PTLM SWIFT | CA |
| 2006-05-03 | 707-824-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SEBASTOPOL | CA |
| 2006-05-03 | 707-869-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | GUERNEVL | CA |
| 2006-05-03 | 707-874-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | OCCIDENTAL | CA |
| 2006-05-03 | 707-882-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | POINTARENA | CA |
| 2006-05-03 | 707-921-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANTA ROSA | CA |
| 2006-05-03 | 707-933-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SONOMA | CA |
| 2006-05-03 | 707-937-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MENDOCINO | CA |
| 2006-05-03 | 707-947-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | YOUNTVILLE | CA |
| 2006-05-03 | 707-962-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | FORT BRAGG | CA |
| 2006-05-03 | 707-965-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | ST HELENA | CA |
| 2006-05-03 | 707-966-8XXX | 8000–8999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LKBERRYESS | CA |
| 2006-04-21 | 707-345-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ST HELENA | CA |
| 2006-04-11 | 707-836-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WINDSOR | CA |
| 2006-04-03 | 707-377-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | BODEGA BAY | CA |
| 2006-04-03 | 707-874-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OCCIDENTAL | CA |
| 2006-04-03 | 707-884-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | GUALALA | CA |
| 2006-04-03 | 707-947-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | YOUNTVILLE | CA |
| 2006-04-03 | 707-968-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ST HELENA | 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.