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
2011-09-23 740-280-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PHILO OH
2011-09-23 740-301-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C RIO GRANDE OH
2011-09-23 740-309-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BARNESVL OH
2011-09-23 740-343-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C NEWLXINGTN OH
2011-09-23 740-347-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CORNING OH
2011-09-23 740-394-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SHAWNEE OH
2011-09-23 740-401-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C BELPRE OH
2011-09-23 740-426-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C JEFFERSNVL OH
2011-09-23 740-472-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 WOODSFIELD OH
2011-09-23 740-473-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEWPORT OH
2011-09-23 740-483-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DUFFY OH
2011-09-23 740-492-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEWCOMRSTN OH
2011-09-23 740-495-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C NEWHOLLAND OH
2011-09-23 740-535-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C MINGO JCT OH
2011-09-23 740-537-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C TORONTO OH
2011-09-23 740-565-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C DRESDEN OH
2011-09-23 740-659-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C GLENFORD OH
2011-09-23 740-693-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WLAFAYETTE OH
2011-09-23 740-697-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C ROSEVILLE OH
2011-09-23 740-757-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SOMERTON OH
2011-09-23 740-836-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SOMERSET OH
2011-09-23 740-849-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C FULTONHAM OH
2011-09-23 740-864-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEWMTMORAS OH
2011-09-23 740-925-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C GALLIPOLIS OH
2011-09-23 740-926-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BEALLSVL OH
2011-09-21 740-238-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHESDA OH
2011-09-21 740-242-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F THORNVILLE OH
2011-09-21 740-367-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHESHIRE OH
2011-09-21 740-402-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CONESVILLE OH
2011-09-21 740-430-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BLOOMINGBG OH
2011-09-21 740-545-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WLAFAYETTE OH
2011-09-15 740-340-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLAIRE OH
2011-09-15 740-500-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CIRCLEVL OH
2011-09-15 740-538-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARIETTA OH
2011-09-15 740-885-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARIETTA OH
2011-09-15 740-957-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DELAWARE OH
2011-09-12 740-200-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 KILBOURNE OH
2011-09-12 740-920-8XXX 8000–8999Assigned WINDSTREAM OHIO, LLC 0665 GRANVILLE OH
2011-09-08 740-292-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F STOCKPORT OH
2011-09-02 740-472-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 WOODSFIELD OH
2011-08-29 740-314-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J STEUBENVL OH
2011-08-24 740-652-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2011-08-17 740-796-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F ADAMSVILLE OH
2011-08-08 740-343-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWLXINGTN OH
2011-08-08 740-485-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MT VERNON OH
2011-08-08 740-513-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DELAWARE OH
2011-08-08 740-616-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWARK OH
2011-08-03 740-219-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 STEUBENVL OH
2011-08-02 740-263-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MT VERNON OH
2011-08-02 740-280-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F PHILO 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.