NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 740
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 2
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
2016-09-12 740-256-0XXX 0000–0999Assigned IP HORIZON LLC 515J GUYAN OH
2016-09-12 740-267-1XXX 1000–1999Assigned IP HORIZON LLC 515J LEWISVILLE OH
2016-09-12 740-299-8XXX 8000–8999Assigned IP HORIZON LLC 515J CLARINGTON OH
2016-09-12 740-303-8XXX 8000–8999Assigned IP HORIZON LLC 515J PHILO OH
2016-09-12 740-307-4XXX 4000–4999Assigned IP HORIZON LLC 515J IRONTON OH
2016-09-12 740-371-1XXX 1000–1999Assigned IP HORIZON LLC 515J MARIETTA OH
2016-09-12 740-379-8XXX 8000–8999Assigned IP HORIZON LLC 515J WALNUT OH
2016-09-12 740-419-2XXX 2000–2999Assigned IP HORIZON LLC 515J MILLEDGEVL OH
2016-09-12 740-426-2XXX 2000–2999Assigned IP HORIZON LLC 515J JEFFERSNVL OH
2016-09-12 740-449-9XXX 9000–9999Assigned IP HORIZON LLC 515J STCLAIRSVL OH
2016-09-12 740-460-1XXX 1000–1999Assigned IP HORIZON LLC 515J CORNING OH
2016-09-12 740-470-6XXX 6000–6999Assigned IP HORIZON LLC 515J SEDALIA OH
2016-09-12 740-473-0XXX 0000–0999Assigned IP HORIZON LLC 515J NEWPORT OH
2016-09-12 740-476-1XXX 1000–1999Assigned IP HORIZON LLC 515J CONESVILLE OH
2016-09-12 740-495-0XXX 0000–0999Assigned IP HORIZON LLC 515J NEWHOLLAND OH
2016-09-12 740-521-8XXX 8000–8999Assigned IP HORIZON LLC 515J DRESDEN OH
2016-09-12 740-535-9XXX 9000–9999Assigned IP HORIZON LLC 515J MINGO JCT OH
2016-09-12 740-536-4XXX 4000–4999Assigned IP HORIZON LLC 515J RUSHVILLE OH
2016-09-12 740-560-8XXX 8000–8999Assigned IP HORIZON LLC 515J RIO GRANDE OH
2016-09-12 740-575-9XXX 9000–9999Assigned IP HORIZON LLC 515J COSHOCTON OH
2016-09-12 740-580-6XXX 6000–6999Assigned IP HORIZON LLC 515J SHAWNEE OH
2016-09-12 740-620-8XXX 8000–8999Assigned IP HORIZON LLC 515J WSNGTNCTHS OH
2016-09-12 740-721-2XXX 2000–2999Assigned IP HORIZON LLC 515J NEWLXINGTN OH
2016-09-12 740-730-8XXX 8000–8999Assigned IP HORIZON LLC 515J TORONTO OH
2016-09-12 740-737-0XXX 0000–0999Assigned IP HORIZON LLC 515J NELSONVL OH
2016-09-12 740-738-1XXX 1000–1999Assigned IP HORIZON LLC 515J MARTISFRRY OH
2016-09-12 740-762-9XXX 9000–9999Assigned IP HORIZON LLC 515J MURRAYCITY OH
2016-09-12 740-786-1XXX 1000–1999Assigned IP HORIZON LLC 515J SOMERTON OH
2016-09-12 740-847-6XXX 6000–6999Assigned IP HORIZON LLC 515J THORNVILLE OH
2016-09-12 740-849-1XXX 1000–1999Assigned IP HORIZON LLC 515J FULTONHAM OH
2016-09-12 740-864-1XXX 1000–1999Assigned IP HORIZON LLC 515J NEWMTMORAS OH
2016-09-12 740-871-0XXX 0000–0999Assigned IP HORIZON LLC 515J GNADENHTTN OH
2016-09-12 740-872-8XXX 8000–8999Assigned IP HORIZON LLC 515J NORWICH OH
2016-09-12 740-875-8XXX 8000–8999Assigned IP HORIZON LLC 515J VINTON OH
2016-09-12 740-900-8XXX 8000–8999Assigned IP HORIZON LLC 515J SOMERSET OH
2016-09-12 740-901-6XXX 6000–6999Assigned IP HORIZON LLC 515J LANCASTER OH
2016-09-12 740-934-1XXX 1000–1999Assigned IP HORIZON LLC 515J GRAYSVILLE OH
2016-09-12 740-952-8XXX 8000–8999Assigned IP HORIZON LLC 515J UHRICHSVL OH
2016-09-12 740-956-8XXX 8000–8999Assigned IP HORIZON LLC 515J LONDON OH
2016-09-12 740-996-0XXX 0000–0999Assigned IP HORIZON LLC 515J STEUBENVL OH
2016-09-09 740-560-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIO GRANDE OH
2016-09-08 740-625-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C CENTERBURG OH
2016-09-08 740-625-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CENTERBURG OH
2016-09-02 740-801-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CAMBRIDGE OH
2016-08-31 740-400-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALTIMORE OH
2016-08-31 740-529-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTSMOUTH OH
2016-08-24 740-309-8XXX 8000–8999Assigned IP HORIZON LLC 515J BARNESVL OH
2016-08-24 740-330-1XXX 1000–1999Assigned IP HORIZON LLC 515J BETHESDA OH
2016-08-24 740-430-8XXX 8000–8999Assigned IP HORIZON LLC 515J BLOOMINGBG OH
2016-08-24 740-573-8XXX 8000–8999Assigned IP HORIZON LLC 515J ARABIA 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.