NumberResearch Membership · Data 09/18/2026

Recent thousands-block assignments

12 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/18/2026

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

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
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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 thousands-block assignments
AssignedBlockAssigneeOCNRate centerState
2014-04-25 661-493-7XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BKFD MAIN CA
2014-04-25 818-946-7XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VAN NUYS CA
2014-04-23 424-299-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2014-04-23 657-227-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WESTMINSTR CA
2014-04-23 909-441-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FONTANA CA
2014-04-23 909-493-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J UPLAND CA
2014-04-23 949-536-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J IRVINE CA
2014-04-23 949-536-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J IRVINE CA
2014-04-21 209-252-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TURLOCK CA
2014-04-21 209-650-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TRACY CA
2014-04-21 209-665-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MANTECA CA
2014-04-14 559-547-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRESNO CA
2014-04-14 661-410-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BKFD NORTH CA
2014-04-11 909-326-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J POMONA CA
2014-04-11 951-384-6XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J RIVERSIDE CA
2014-04-01 818-712-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
2014-03-21 702-761-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
2014-03-19 424-327-6XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2014-03-19 747-221-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J GLENDALE CA
2014-03-19 916-330-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2014-03-19 951-790-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MIRA LOMA CA
2014-03-18 559-547-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRESNO CA
2014-03-18 661-410-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BKFD NORTH CA
2014-03-18 714-820-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CYPRESS CA
2014-03-18 909-906-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2014-03-14 415-930-7XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2014-03-14 415-930-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2014-03-14 424-324-6XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2014-03-07 951-432-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CORONA CA
2014-03-07 951-432-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CORONA CA
2014-03-07 951-432-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CORONA CA
2014-03-04 469-535-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRISCO TX
2014-03-04 469-654-6XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CRANDALL TX
2014-03-04 682-228-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CLEBURNE TX
2014-03-04 713-352-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J APOLLO TX
2014-03-04 830-212-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DEL RIO TX
2014-03-04 832-674-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LANGHAMCRK TX
2014-03-04 832-989-5XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J STAFFORD TX
2014-02-24 669-231-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNJS WEST CA
2014-02-24 760-507-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALM SPG CA
2014-02-07 469-701-7XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CARROLLTON TX
2014-02-07 469-701-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CARROLLTON TX
2014-02-07 979-429-8XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BAY CITY TX
2014-01-27 978-495-7XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BILLERICA MA
2013-12-10 702-945-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
2013-12-06 702-793-4XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LAS VEGAS NV
2013-12-05 424-335-2XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2013-12-05 657-232-6XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANTA ANA CA
2013-12-05 916-571-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM NORTH CA
2013-12-05 949-247-3XXX U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J IRVINE CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.