NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

33 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 346
ONVOY, LLC - TX 18
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 9
PAETEC ITEL, LLC 2
BANDWIDTH.COM CLEC, LLC - TX 2
TELNYX 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
2022-01-14 346-837-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-837-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-837-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-837-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-837-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-14 346-837-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2022-01-10 346-639-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J HSTNSUBURB TX
2022-01-09 346-453-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2022-01-09 346-453-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2022-01-09 346-453-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2022-01-09 346-453-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2022-01-09 346-532-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CLEVELAND TX
2022-01-07 346-338-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J VLY LODGE TX
2022-01-07 346-453-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J HOUSTON TX
2022-01-07 346-527-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2022-01-07 346-527-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2022-01-07 346-527-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2022-01-07 346-527-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2022-01-07 346-527-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2022-01-07 346-633-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J DEER PARK TX
2022-01-07 346-837-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J BAMMEL TX
2022-01-06 346-538-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J RICHMNRNBG TX
2022-01-06 346-539-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CYPRESS TX
2022-01-06 346-540-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SPLENDORA TX
2022-01-05 346-487-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J SEABROOK TX
2022-01-05 346-528-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J MANVEL TX
2022-01-05 346-542-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOUSTON TX
2022-01-05 346-542-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOUSTON TX
2022-01-04 346-525-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SPRING TX
2021-12-30 346-522-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2021-12-30 346-522-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2021-12-30 346-522-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2021-12-30 346-527-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2021-12-30 346-527-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2021-12-30 346-527-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2021-12-29 346-457-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KATY TX
2021-12-29 346-537-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J HOUSTON TX
2021-12-28 346-513-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-12-28 346-513-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-12-28 346-535-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HSTNSUBURB TX
2021-12-28 346-535-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HSTNSUBURB TX
2021-12-20 346-535-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2021-12-20 346-535-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2021-12-17 346-296-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H PINEHURST TX
2021-12-17 346-440-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HSTNSUBURB TX
2021-12-17 346-459-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2021-12-17 346-459-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2021-12-17 346-488-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PORTER HTS TX
2021-12-17 346-507-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2021-12-17 346-513-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CYPRESS TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.