NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

11 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 11
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
626-363 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LA PUENTE CA
626-373 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J COVINA CA
626-385 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AZUSA CA
626-386 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MONROVIA CA
626-461 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ARCADIA CA
626-486 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PSDN PSDN CA
626-566 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ARCADIA CA
626-607 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-610 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AZUSA CA
626-618 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL MONTE CA
626-626 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LA PUENTE CA
626-636 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL MONTE CA
626-642 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-650 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AZUSA CA
626-653 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J COVINA CA
626-656 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-657 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PSDN PSDN CA
626-677 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-678 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J COVINA CA
626-720 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PSDN PSDN CA
626-722 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J COVINA CA
626-723 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LA PUENTE CA
626-739 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MONROVIA CA
626-773 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PSDN PSDN CA
626-774 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL MONTE CA
626-775 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MONROVIA CA
626-782 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-820 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LA PUENTE CA
626-869 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J COVINA CA
626-921 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SIERRAMADR CA
626-940 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALHAMBRA CA
626-941 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL MONTE CA
626-993 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PSDN PSDN CA
650-206 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WOODSIDE CA
650-209 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LOS ALTOS CA
650-223 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALO ALTO CA
650-243 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SSNFRNCSCO CA
650-409 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MILLBRAE CA
650-416 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SSNFRNCSCO CA
650-417 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MT VIEW CA
650-421 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDWOOD CY CA
650-434 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WOODSIDE CA
650-443 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MILLBRAE CA
650-471 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LOS ALTOS CA
650-479 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HALFMOONBY CA
650-487 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LA HONDA CA
650-503 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDWOOD CY CA
650-516 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PACIFICA CA
650-517 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNCRL-BLMT CA
650-532 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SAN MATEO 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.