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 209
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 |
|---|---|---|---|---|---|---|---|
| 2007-08-09 | 209-286-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MOKELUMNHL | CA |
| 2007-08-09 | 209-626-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MERCED | CA |
| 2007-08-09 | 209-694-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNRA MAIN | CA |
| 2007-08-09 | 209-710-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOS BANOS | CA |
| 2007-08-09 | 209-812-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATWATER | CA |
| 2007-08-09 | 209-852-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WTFR DNPR | CA |
| 2007-08-09 | 209-853-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WTFR MAIN | CA |
| 2007-08-09 | 209-863-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RIVERBANK | CA |
| 2007-08-09 | 209-912-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GALT | CA |
| 2007-08-08 | 209-879-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TRACY | CA |
| 2007-08-01 | 209-257-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | JACKSON | CA |
| 2007-08-01 | 209-920-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VALLEY SPG | CA |
| 2007-07-20 | 209-629-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MANTECA | CA |
| 2007-07-19 | 209-640-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TRACY | CA |
| 2007-07-19 | 209-888-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | STOCKTON | CA |
| 2007-07-19 | 209-888-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | STOCKTON | CA |
| 2007-07-13 | 209-416-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2007-07-13 | 209-416-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-07-13 | 209-416-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2007-07-13 | 209-416-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-07-13 | 209-416-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2007-07-10 | 209-409-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-07-10 | 209-409-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-07-10 | 209-409-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-07-02 | 209-408-0XXX | 0000–0999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MODESTO | CA |
| 2007-06-29 | 209-202-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TURLOCK | CA |
| 2007-06-29 | 209-202-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TURLOCK | CA |
| 2007-06-28 | 209-217-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | JACKSON | CA |
| 2007-06-28 | 209-267-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SUTTER CRK | CA |
| 2007-06-28 | 209-286-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MOKELUMNHL | CA |
| 2007-06-28 | 209-498-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SANANDREAS | CA |
| 2007-06-28 | 209-594-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | STOCKTON | CA |
| 2007-06-28 | 209-640-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | TRACY | CA |
| 2007-06-28 | 209-680-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PLYMOUTH | CA |
| 2007-06-28 | 209-817-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | STOCKTON | CA |
| 2007-06-28 | 209-890-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ANGELSCAMP | CA |
| 2007-06-28 | 209-920-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | VALLEY SPG | CA |
| 2007-06-21 | 209-323-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA |
| 2007-06-21 | 209-323-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA |
| 2007-06-21 | 209-323-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA |
| 2007-06-21 | 209-489-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | MERCED | CA |
| 2007-06-14 | 209-846-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MODESTO | CA |
| 2007-06-13 | 209-202-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TURLOCK | CA |
| 2007-06-13 | 209-365-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LODI | CA |
| 2007-06-12 | 209-346-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | TRACY | CA |
| 2007-06-12 | 209-846-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2007-06-08 | 209-846-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MODESTO | CA |
| 2007-05-30 | 209-684-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2007-05-30 | 209-684-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2007-05-30 | 209-684-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | 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.