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
2014-04-11 737-888-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 TAYLOR TX
2014-04-10 737-704-0XXX 0000–0999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 AUSTIN TX
2014-04-10 737-704-2XXX 2000–2999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 AUSTIN TX
2014-04-10 737-704-3XXX 3000–3999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 AUSTIN TX
2014-03-31 737-666-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ELGIN TX
2014-03-31 737-888-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2014-03-31 737-999-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BUDA TX
2014-03-24 737-703-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C AUSTIN TX
2014-03-12 737-210-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-03-12 737-247-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-03-12 737-247-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-03-12 737-247-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-03-12 737-247-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-03-12 737-666-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELGIN TX
2014-03-12 737-932-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-02-28 737-247-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2014-02-26 737-444-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GEORGETOWN TX
2014-02-26 737-444-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GEORGETOWN TX
2014-02-25 737-210-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2014-02-25 737-210-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2014-02-24 737-247-2XXX 2000–2999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-24 737-247-4XXX 4000–4999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-24 737-247-5XXX 5000–5999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-24 737-999-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BUDA TX
2014-01-10 737-210-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-01-10 737-210-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-01-10 737-210-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2013-12-31 737-703-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-11-20 737-999-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUDA TX
2013-11-04 737-210-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2013-10-28 737-210-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-10-28 737-210-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-10-28 737-210-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-09-25 737-666-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ELGIN TX
2013-09-24 737-346-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2013-09-24 737-346-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2013-09-24 737-346-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2013-09-23 737-346-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2013-08-30 737-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TAYLOR TX
2013-08-30 737-888-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TAYLOR TX
2013-08-30 737-888-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TAYLOR TX
2013-08-13 737-222-2XXX 2000–2999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D AUSTIN TX
2013-08-09 737-777-1XXX 1000–1999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LEANDER TX
2013-08-09 737-777-4XXX 4000–4999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LEANDER TX
2013-08-09 737-777-5XXX 5000–5999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LEANDER TX
2013-07-23 737-346-0XXX 0000–0999Assigned AUSTIN BESTLINE COMPANY 7551 AUSTIN TX
2013-06-12 737-932-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-06-12 737-932-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2013-05-30 737-247-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2013-05-30 737-932-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN 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.