NumberResearchRecent prefix assignments
11 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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 | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2001-05-21 | 925-643 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PSBG WEST | CA |
| 2001-05-18 | 805-369 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PASOROBLES | CA |
| 2001-05-18 | 925-667 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LIVERMORE | CA |
| 2001-05-14 | 682-459 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CLEBURNE | TX |
| 2001-05-09 | 832-240 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | APOLLO | TX |
| 2001-04-26 | 925-621 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLEASANTON | CA |
| 2001-04-24 | 925-839 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MARTINEZ | CA |
| 2001-04-23 | 510-746 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OKLD TRNID | CA |
| 2001-03-27 | 925-320 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MORAGA | CA |
| 2001-03-27 | 925-627 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | WALNUT CRK | CA |
| 2001-03-22 | 559-797 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CLOVIS | CA |
| 2001-03-22 | 805-764 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAMARILLO | CA |
| 2001-03-15 | 469-447 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CRANDALL | TX |
| 2001-03-02 | 805-792 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ATASCADERO | CA |
| 2001-03-01 | 408-754 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS SOUTH | CA |
| 2001-03-01 | 510-933 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | FRNK OLIVR | CA |
| 2001-03-01 | 661-410 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BKFD NORTH | CA |
| 2001-03-01 | 661-716 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BKFD MAIN | CA |
| 2001-03-01 | 661-847 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BKFD SOUTH | CA |
| 2001-03-01 | 925-771 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CONCORD | CA |
| 2001-03-01 | 925-809 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ECONTRCOST | CA |
| 2001-01-26 | 805-270 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ARROYOGRND | CA |
| 2001-01-25 | 619-345 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DULZURA | CA |
| 2001-01-23 | 323-989 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 11 | CA |
| 206-493 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SEATTLE | WA | |
| 209-205 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MERCED | CA | |
| 209-210 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LODI | CA | |
| 209-216 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | TURLOCK | CA | |
| 209-229 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | TRACY | CA | |
| 209-288 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNRA MAIN | CA | |
| 209-337 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA | |
| 209-338 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MODESTO | CA | |
| 209-343 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MODESTO | CA | |
| 209-438 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LINDEN | CA | |
| 209-774 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA | |
| 209-820 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | TRACY | CA | |
| 210-447 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-448 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-457 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-576 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-933 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 213-201 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA | |
| 213-213 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-222 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-223 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-225 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-259 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-316 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-342 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-355 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.