NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

23 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 737
ONVOY, LLC - TX 14
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 4
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - TX 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
2020-10-05 737-577-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BRIGGS TX
2020-10-02 737-537-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 LAMPASAS TX
2020-09-29 737-280-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2020-09-29 737-280-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2020-09-29 737-280-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2020-09-29 737-281-1XXX 1000–1999Assigned IP HORIZON LLC 515J AUSTIN TX
2020-09-24 737-279-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2020-09-24 737-336-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2020-09-24 737-336-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2020-09-23 737-278-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BASTROP TX
2020-09-21 737-244-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TAYLOR TX
2020-09-18 737-233-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ELGIN TX
2020-09-16 737-276-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KYLE TX
2020-09-16 737-276-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KYLE TX
2020-09-14 737-265-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KYLE TX
2020-09-14 737-477-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOCKHART TX
2020-09-09 737-275-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-253-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-667-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-667-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-667-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-667-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2020-09-03 737-842-5XXX 5000–5999Assigned FRACTEL, LLC 965H PAIGE TX
2020-09-03 737-877-7XXX 7000–7999Assigned FRACTEL, LLC 965H BUDA TX
2020-09-03 737-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H ADAMSVILLE TX
2020-08-28 737-336-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-336-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-477-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F LOCKHART TX
2020-08-28 737-895-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-895-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-895-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-28 737-895-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-08-27 737-274-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 737-274-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-25 737-733-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-25 737-733-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-25 737-733-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BASTROP TX

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.