NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 440
ONVOY, LLC - OH 2
EXIANT COMMUNICATIONS LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
INTRADO COMMUNICATIONS, 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
2011-11-22 440-731-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2011-11-22 440-731-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2011-11-22 440-855-8XXX 8000–8999Assigned METROPCS, INC. 5562 ASHTABULA OH
2011-11-21 440-226-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHARDON OH
2011-11-21 440-751-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 OBERLIN OH
2011-11-11 440-316-2XXX 2000–2999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F NORTHEATON OH
2011-11-11 440-381-8XXX 8000–8999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F ASHTABULA OH
2011-11-11 440-574-0XXX 0000–0999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F OBERLIN OH
2011-11-11 440-723-8XXX 8000–8999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F ELYRIA OH
2011-11-03 440-305-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BEREA OH
2011-11-03 440-305-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BEREA OH
2011-11-03 440-305-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BEREA OH
2011-11-03 440-305-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BEREA OH
2011-10-04 440-361-7XXX 7000–7999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F GENEVA OH
2011-09-26 440-361-8XXX 8000–8999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 GENEVA OH
2011-09-26 440-632-7XXX 7000–7999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 MIDDLEFLD OH
2011-09-19 440-214-3XXX 3000–3999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 CHARDON OH
2011-09-19 440-261-3XXX 3000–3999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 ASHTABULA OH
2011-09-19 440-307-3XXX 3000–3999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 MADISON OH
2011-09-19 440-965-0XXX 0000–0999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F BIRMINGHAM OH
2011-09-15 440-638-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STRONGSVL OH
2011-09-15 440-679-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILLOUGHBY OH
2011-09-15 440-708-7XXX 7000–7999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 BAINBRIDGE OH
2011-09-09 440-381-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-09-09 440-381-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-09-09 440-753-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HILLCREST OH
2011-09-01 440-305-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEREA OH
2011-08-31 440-723-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2011-08-17 440-363-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEROY OH
2011-08-08 440-321-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 E CLARIDON OH
2011-08-08 440-384-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BAINBRIDGE OH
2011-08-08 440-420-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ELYRIA OH
2011-08-08 440-420-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ELYRIA OH
2011-08-08 440-607-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C LEROY OH
2011-08-08 440-855-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ASHTABULA OH
2011-07-29 440-222-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LORAIN OH
2011-07-29 440-222-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LORAIN OH
2011-07-29 440-222-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LORAIN OH
2011-07-29 440-222-9XXX 9000–9999Assigned METROPCS, INC. 5562 LORAIN OH
2011-07-08 440-723-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2011-07-01 440-415-8XXX 8000–8999Assigned WINDSTREAM WESTERN RESERVE, INC. 0666 GENEVA OH
2011-07-01 440-571-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILLOUGHBY OH
2011-06-30 440-523-2XXX 2000–2999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-30 440-523-3XXX 3000–3999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-30 440-523-4XXX 4000–4999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-30 440-523-5XXX 5000–5999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-30 440-523-6XXX 6000–6999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-30 440-523-7XXX 7000–7999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2011-06-24 440-579-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C PAINESVL OH
2011-06-14 440-695-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K AVON 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.