NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 937
PEERLESS NETWORK OF OHIO, LLC - OH 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
TELNYX LLC 1
AHOI 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
2012-01-09 937-502-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C XENIA OH
2012-01-09 937-530-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MSBGWCRLTN OH
2012-01-09 937-606-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C PIQUA OH
2012-01-09 937-702-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C BEAVERCREK OH
2012-01-09 937-717-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C SPRINGFLD OH
2012-01-09 937-777-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C FAIRBORN OH
2012-01-09 937-886-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CENTERVLLE OH
2011-12-28 937-553-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MARYSVILLE OH
2011-12-20 937-573-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TROY OH
2011-12-19 937-828-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CATAWBA OH
2011-12-15 937-392-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F RIPLEY OH
2011-12-15 937-466-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARSHALL OH
2011-12-15 937-738-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 MARYSVILLE OH
2011-12-15 937-872-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F JAMESTOWN OH
2011-12-15 937-927-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SUGRTRERDG OH
2011-12-06 937-246-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F RAYMOND OH
2011-11-28 937-288-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DANVILLE OH
2011-11-18 937-594-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARYSVILLE OH
2011-11-18 937-618-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN OH
2011-11-17 937-516-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-17 937-516-9XXX 9000–9999Assigned METROPCS, INC. 5562 DAYTON OH
2011-11-16 937-536-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2011-11-16 937-536-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2011-11-16 937-536-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2011-11-16 937-536-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2011-10-28 937-336-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EATON OH
2011-10-28 937-768-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 XENIA OH
2011-10-27 937-504-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SPRINGFLD OH
2011-10-25 937-764-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BELFAST OH
2011-10-24 937-892-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEST UNION OH
2011-10-21 937-240-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BELLE CTR OH
2011-10-18 937-249-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F ABERDEEN OH
2011-10-12 937-503-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-10-12 937-503-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-10-12 937-503-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2011-10-06 937-234-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2011-10-06 937-926-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRINGFLD OH
2011-10-05 937-715-1XXX 1000–1999Assigned METROPCS, INC. 5562 TROTWOOD OH
2011-10-05 937-715-2XXX 2000–2999Assigned METROPCS, INC. 5562 TROTWOOD OH
2011-09-23 937-349-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MILFORDCTR OH
2011-09-15 937-303-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2011-09-15 937-608-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH

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.