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
2018-07-05 737-702-9XXX 9000–9999Assigned INVOXIO INCORPORATED 158H GRANGER TX
2018-07-05 737-757-5XXX 5000–5999Assigned INVOXIO INCORPORATED 158H LEANDER TX
2018-07-03 737-238-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BERTRAM TX
2018-07-03 737-770-0XXX 0000–0999Assigned INVOXIO INCORPORATED 158H BUDA TX
2018-06-29 737-248-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F KYLE TX
2018-06-29 737-747-5XXX 5000–5999Assigned INVOXIO INCORPORATED 158H BURNET TX
2018-06-29 737-881-6XXX 6000–6999Assigned INVOXIO INCORPORATED 158H BASTROP TX
2018-06-22 737-236-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-06-22 737-236-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-06-22 737-238-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BERTRAM TX
2018-06-20 737-225-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ROCKDALE TX
2018-06-19 737-471-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-06-19 737-990-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-06-19 737-990-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-06-18 737-990-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-06-18 737-990-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-06-18 737-990-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-06-18 737-990-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-06-18 737-990-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-31 737-990-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2018-05-31 737-990-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2018-05-25 737-213-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SAN MARCOS TX
2018-05-24 737-245-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2018-05-23 737-990-0XXX 0000–0999Assigned INVOXIO INCORPORATED 158H AUSTIN TX
2018-05-11 737-245-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2018-05-11 737-245-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2018-05-08 737-702-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GRANGER TX
2018-05-07 737-231-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-231-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2018-05-07 737-235-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-07 737-235-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-07 737-235-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-07 737-235-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-07 737-235-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-07 737-235-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2018-05-03 737-234-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F JARRELL TX
2018-04-30 737-248-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F KYLE TX
2018-04-06 737-231-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2018-03-29 737-233-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ELGIN TX
2018-03-29 737-881-4XXX 4000–4999Assigned METROPCS, INC. 5562 BASTROP TX
2018-03-28 737-471-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-03-28 737-471-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-03-28 737-471-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-03-28 737-471-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-03-28 737-471-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F 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.