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
2019-05-10 346-610-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2019-05-10 346-610-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2019-05-10 346-610-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2019-05-10 346-610-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2019-05-08 346-278-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MANVEL TX
2019-05-07 346-367-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2019-05-06 346-377-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2019-05-06 346-377-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2019-05-06 346-377-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2019-05-06 346-843-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2019-05-01 346-341-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F STAFFORD TX
2019-04-30 346-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HUMBLE TX
2019-04-29 346-295-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2019-04-26 346-385-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2019-04-22 346-378-0XXX 0000–0999Assigned IP HORIZON LLC 515J HSTNSUBURB TX
2019-04-22 346-378-1XXX 1000–1999Assigned IP HORIZON LLC 515J HSTNSUBURB TX
2019-04-19 346-378-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HSTNSUBURB TX
2019-04-17 346-359-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LIVERPOOL TX
2019-04-17 346-386-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRING TX
2019-04-11 346-339-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2019-04-11 346-348-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2019-04-11 346-348-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2019-04-10 346-787-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA PORTE TX
2019-04-09 346-382-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SPRING TX
2019-04-08 346-334-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2019-04-04 346-353-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-04-04 346-353-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-04-04 346-353-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-04-04 346-353-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-04-04 346-353-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-03-27 346-385-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FRIENDSWD TX
2019-03-25 346-361-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEABROOK TX
2019-03-25 346-384-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-25 346-384-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2019-03-20 346-353-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2019-03-20 346-857-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2019-03-20 346-857-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2019-03-12 346-363-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2019-03-04 346-377-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LANGHAMCRK TX
2019-02-26 346-358-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LEAGUECITY TX
2019-02-20 346-355-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-02-20 346-355-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-02-20 346-355-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2019-02-19 346-334-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2019-02-19 346-374-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB 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.