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
2016-05-19 737-747-9XXX 9000–9999Assigned METROPCS, INC. 5562 BURNET TX
2016-05-17 737-215-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2016-05-09 737-209-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J AUSTIN TX
2016-05-09 737-209-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J AUSTIN TX
2016-05-04 737-213-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SAN MARCOS TX
2016-04-27 737-999-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2016-04-26 737-209-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2016-04-26 737-209-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2016-04-18 737-802-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2016-04-12 737-781-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-12 737-781-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2016-04-01 737-208-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2016-04-01 737-618-7XXX 7000–7999Assigned METROPCS, INC. 5562 LAMPASAS TX
2016-04-01 737-618-8XXX 8000–8999Assigned METROPCS, INC. 5562 LAMPASAS TX
2016-04-01 737-717-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2016-04-01 737-717-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2016-04-01 737-717-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2016-04-01 737-999-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUDA TX
2016-04-01 737-999-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUDA TX
2016-03-29 737-717-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J AUSTIN TX
2016-03-24 737-201-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2016-03-24 737-201-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2016-03-24 737-404-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 KYLE TX
2016-03-24 737-843-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C LEANDER TX
2016-03-23 737-208-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2016-03-23 737-208-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2016-03-23 737-702-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C GRANGER TX
2016-03-23 737-702-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C GRANGER TX
2016-03-14 737-200-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C ELGIN TX
2016-03-14 737-200-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C ELGIN TX
2016-03-10 737-717-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2016-03-10 737-717-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2016-03-09 737-618-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C LAMPASAS TX
2016-03-09 737-618-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C LAMPASAS TX
2016-03-07 737-200-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELGIN TX
2016-03-07 737-404-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C KYLE TX
2016-03-07 737-404-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C KYLE TX
2016-03-07 737-781-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2016-03-03 737-208-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2016-02-26 737-708-4XXX 4000–4999Assigned METROPCS, INC. 5562 AUSTIN TX
2016-02-26 737-717-1XXX 1000–1999Assigned METROPCS, INC. 5562 AUSTIN TX
2016-02-26 737-717-2XXX 2000–2999Assigned METROPCS, INC. 5562 AUSTIN TX
2016-02-26 737-717-7XXX 7000–7999Assigned METROPCS, INC. 5562 AUSTIN TX
2016-02-19 737-200-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C ELGIN 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.