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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
650-535 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MOSS BEACH CA
650-538 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PESCADERO CA
650-543 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALO ALTO CA
650-681 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALO ALTO CA
650-810 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MT VIEW CA
650-832 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNCRL-BLMT CA
650-931 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SAN MATEO CA
661-964 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNCA NHCS CA
682-253 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ATLAS TX
702-212 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-214 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-215 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-307 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-309 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-310 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-312 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-313 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-314 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-315 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-316 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-317 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-318 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-319 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-320 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-532 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-563 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-719 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-835 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-851 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
702-985 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
707-266 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NAPA CA
707-303 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ROSA CA
707-583 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ROSA CA
707-603 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J NAPA CA
707-674 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VALLEJO CA
707-720 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRFLD-SUIS CA
707-721 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SONOMA CA
707-752 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BENICIA CA
707-790 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PTLM MAIN CA
707-921 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ROSA CA
713-590 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HOUSTON TX
713-595 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HOUSTON TX
714-203 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLACENTIA CA
714-210 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ANA CA
714-221 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ORANGE CA
714-224 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANAHEIM CA
714-243 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CYPRESS CA
714-263 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ANA CA
714-367 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BUENA PARK CA
714-388 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FULLERTON 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.