NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2004-08-16 740-617-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
2004-08-06 740-252-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
2004-08-06 740-334-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
2004-07-30 740-370-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 PORTSMOUTH OH
2004-06-30 740-435-4XXX 4000–4999Assigned FRONTIER NORTH, INC. - OH 0615 CAMBRIDGE OH
2004-06-29 740-254-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GNADENHTTN OH
2004-06-29 740-578-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GALLIPOLIS OH
2004-06-29 740-651-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MCONNELSVL OH
2004-06-29 740-721-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWLXINGTN OH
2004-06-29 740-809-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 JOHNSTOWN OH
2004-06-29 740-836-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SOMERSET OH
2004-06-29 740-841-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWPORT OH
2004-06-23 740-888-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-23 740-888-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-06-16 740-315-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BELPRE OH
2004-06-16 740-552-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COSHOCTON OH
2004-06-02 740-252-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
2004-05-21 740-249-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 ATHENS OH
2004-05-21 740-931-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-21 740-931-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
2004-05-13 740-334-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWARK OH
2004-05-13 740-334-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWARK OH
2004-05-13 740-917-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 RATHBONE OH
2004-05-03 740-403-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
2004-04-29 740-341-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION OH
2004-04-29 740-341-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION OH
2004-04-27 740-313-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WSNGTNCTHS OH
2004-04-27 740-443-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PIKETON OH
2004-04-27 740-444-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 POMEROY OH
2004-04-27 740-530-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUFFY OH
2004-03-26 740-275-3XXX 3000–3999Assigned AT&T - LOCAL 7421 STEUBENVL OH
2004-03-25 740-241-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYESVILLE OH
2004-03-18 740-318-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SUGARGROVE OH
2004-03-18 740-565-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRESDEN OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.