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
2014-03-04 937-815-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2014-03-03 937-786-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENVILLE OH
2014-02-27 937-762-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-26 937-813-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2014-02-11 937-639-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 ANNA OH
2014-02-07 937-560-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MSBGWCRLTN OH
2014-02-06 937-767-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-767-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-767-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-769-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-769-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-769-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-769-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YLSPGCLFTN OH
2014-02-06 937-862-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRING VLY OH
2014-02-06 937-862-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRING VLY OH
2014-02-06 937-862-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRING VLY OH
2014-02-06 937-862-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRING VLY OH
2014-01-30 937-283-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 WILMINGTON OH
2014-01-28 937-727-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRINGFLD OH
2014-01-21 937-556-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 WILMINGTON OH
2014-01-21 937-703-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 TROY OH
2014-01-17 937-358-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 YORKCENTER OH
2014-01-17 937-601-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WMANSFIELD OH
2014-01-17 937-810-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 RUSSELLSPT OH
2014-01-17 937-887-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 W LIBERTY OH
2014-01-16 937-240-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BELLE CTR OH
2014-01-16 937-246-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 RAYMOND OH
2014-01-16 937-348-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MAGNETCSPG OH
2014-01-16 937-349-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MILFORDCTR OH
2014-01-16 937-354-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT VICTORY OH
2014-01-16 937-362-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ROSEWOOD OH
2014-01-16 937-404-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELLEFNTAN OH
2014-01-16 937-468-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 RUSHSYLVAN OH
2014-01-16 937-582-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DE GRAFF OH
2014-01-16 937-589-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUNTSVILLE OH
2014-01-16 937-598-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J E LIBERTY OH
2014-01-16 937-617-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RIDGEWAY OH
2014-01-16 937-982-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BYHALIA OH
2013-12-26 937-221-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K DAYTON OH
2013-12-26 937-262-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2013-12-10 937-742-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VANDALIA 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.