NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

36 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 346
ONVOY, LLC - TX 21
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
2016-10-07 346-774-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-10-07 346-774-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-10-07 346-774-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-10-07 346-774-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-10-07 346-917-3XXX 3000–3999Assigned METROPCS, INC. 5562 CHANNELVW TX
2016-10-07 346-917-4XXX 4000–4999Assigned METROPCS, INC. 5562 CHANNELVW TX
2016-10-07 346-917-5XXX 5000–5999Assigned METROPCS, INC. 5562 CHANNELVW TX
2016-10-04 346-235-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-235-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-235-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-235-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-235-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-235-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2016-10-04 346-236-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 TOMBALL TX
2016-09-22 346-235-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BAMMEL TX
2016-09-22 346-351-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPRING TX
2016-09-22 346-814-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2016-09-21 346-320-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2016-09-21 346-570-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2016-09-20 346-236-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2016-09-20 346-236-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2016-09-20 346-773-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-09-20 346-773-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-09-20 346-773-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-09-20 346-773-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-09-20 346-773-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2016-09-16 346-412-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2016-09-16 346-412-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2016-09-13 346-387-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2016-09-13 346-387-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2016-09-13 346-387-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2016-09-13 346-387-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2016-09-13 346-387-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2016-09-13 346-757-1XXX 1000–1999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-2XXX 2000–2999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-3XXX 3000–3999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-4XXX 4000–4999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-5XXX 5000–5999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-6XXX 6000–6999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-757-7XXX 7000–7999Assigned METROPCS, INC. 5562 STAFFORD TX
2016-09-13 346-760-2XXX 2000–2999Assigned METROPCS, INC. 5562 BARKER TX
2016-09-13 346-760-3XXX 3000–3999Assigned METROPCS, INC. 5562 BARKER TX
2016-09-13 346-760-4XXX 4000–4999Assigned METROPCS, INC. 5562 BARKER TX
2016-09-13 346-760-6XXX 6000–6999Assigned METROPCS, INC. 5562 BARKER TX
2016-09-13 346-760-7XXX 7000–7999Assigned METROPCS, INC. 5562 BARKER TX
2016-09-13 346-801-5XXX 5000–5999Assigned METROPCS, INC. 5562 BEACH CITY TX
2016-09-13 346-801-7XXX 7000–7999Assigned METROPCS, INC. 5562 BEACH CITY TX
2016-09-09 346-561-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F HOUSTON TX
2016-09-08 346-978-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2016-09-07 346-241-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON 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.