NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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 — NPA 424
ONVOY, LLC - CA 15
OPENTACT INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
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
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-03-14 424-205-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2007-03-14 424-216-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNMN MRVS CA
2007-03-14 424-218-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2007-03-14 424-219-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2007-03-12 424-200-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-200-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-200-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-200-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-200-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-200-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2007-03-12 424-204-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D BEVERLYHLS CA
2007-03-12 424-204-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D BEVERLYHLS CA
2007-03-12 424-213-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CMTN CMTN CA
2007-03-12 424-672-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D CULVERCITY CA
2007-03-12 424-750-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2007-03-08 424-218-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2007-03-07 424-200-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HAWTHORNE CA
2007-02-27 424-210-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SAN PEDRO CA
2007-02-26 424-217-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2007-02-26 424-217-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2007-02-23 424-634-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2007-02-23 424-634-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2007-02-23 424-675-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2007-02-23 424-750-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INGLEWOOD CA
2007-02-22 424-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOMITA CA
2007-02-21 424-200-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2007-02-21 424-200-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2007-02-21 424-207-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2007-02-21 424-207-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2007-02-13 424-201-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TORRANCE CA
2007-02-13 424-201-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TORRANCE CA
2007-02-13 424-201-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TORRANCE CA
2007-02-13 424-203-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LOMITA CA
2007-02-13 424-203-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LOMITA CA
2007-02-13 424-207-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J INGLEWOOD CA
2007-02-13 424-207-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J INGLEWOOD CA
2007-02-13 424-207-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J INGLEWOOD CA
2007-02-13 424-208-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J W ANGELES CA
2007-02-13 424-208-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J W ANGELES CA
2007-02-13 424-208-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J W ANGELES CA
2007-02-13 424-212-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2007-02-13 424-212-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2007-02-13 424-212-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2007-02-13 424-213-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CMTN CMTN CA
2007-02-13 424-213-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CMTN CMTN CA
2007-02-13 424-213-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CMTN CMTN CA
2007-02-13 424-214-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2007-02-13 424-214-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2007-02-13 424-214-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2007-02-13 424-214-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.