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
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 323-456 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 13 | CA | |
| 323-505 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 04 | CA | |
| 323-508 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 12 | CA | |
| 323-522 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 02 | CA | |
| 323-523 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 06 | CA | |
| 323-535 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 02 | CA | |
| 323-543 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 03 | CA | |
| 323-556 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 13 | CA | |
| 323-558 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MONTEBELLO | CA | |
| 323-596 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 12 | CA | |
| 323-647 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 05 | CA | |
| 323-648 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 13 | CA | |
| 323-785 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 14 | CA | |
| 323-790 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 14 | CA | |
| 323-796 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 05 | CA | |
| 323-813 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 08 | CA | |
| 323-834 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 09 | CA | |
| 323-835 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 06 | CA | |
| 323-859 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 05 | CA | |
| 323-905 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 09 | CA | |
| 323-923 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 06 | CA | |
| 323-987 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 04 | CA | |
| 323-999 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 03 | CA | |
| 361-520 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CALALLEN | TX | |
| 361-561 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | C CHRISTI | TX | |
| 361-826 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | C CHRISTI | TX | |
| 408-200 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA | |
| 408-207 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA | |
| 408-240 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS NORTH | CA | |
| 408-380 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA | |
| 408-384 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LOS GATOS | CA | |
| 408-385 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAMPBELL | CA | |
| 408-454 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA | |
| 408-513 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS SOUTH | CA | |
| 408-514 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS NORTH | CA | |
| 408-579 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA | |
| 408-585 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SUNNYVALE | CA | |
| 408-612 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MORGANHILL | CA | |
| 408-913 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SARATOGA | CA | |
| 413-418 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PITTSFIELD | MA | |
| 415-213 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC MT-EV | CA | |
| 415-321 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA | |
| 415-410 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC MT-EV | CA | |
| 415-419 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN RAFAEL | CA | |
| 415-430 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA | |
| 415-526 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN RAFAEL | CA | |
| 415-562 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC JUNPR | CA | |
| 415-568 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA | |
| 415-569 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MILLVALLEY | CA | |
| 415-746 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | 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.