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
2008-12-04 937-551-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F PHILLIPSBG OH
2008-12-04 937-553-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2008-12-04 937-568-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO VIENNA OH
2008-12-04 937-579-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LYNCHBURG OH
2008-12-04 937-583-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEWISBURG OH
2008-12-04 937-584-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SABINA OH
2008-12-04 937-612-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NO LEWISBG OH
2008-12-04 937-617-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F RIDGEWAY OH
2008-12-04 937-619-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CENTERVLLE OH
2008-12-04 937-625-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BLANCHESTR OH
2008-12-04 937-679-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEWCARLISL OH
2008-12-04 937-685-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARTINSVL OH
2008-12-04 937-687-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEWLEBANON OH
2008-12-04 937-697-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CEDARVILLE OH
2008-12-04 937-730-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F ROSSBURG OH
2008-12-04 937-736-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F XENIA OH
2008-12-04 937-756-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SOUTHSOLON OH
2008-12-04 937-770-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BROOKVILLE OH
2008-12-04 937-817-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHRISTISBG OH
2008-12-04 937-848-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BELLBROOK OH
2008-12-04 937-889-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LIBERTY OH
2008-12-04 937-947-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LAURA OH
2008-12-04 937-964-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NO HAMPTON OH
2008-11-24 937-765-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWCARLISL OH
2008-11-17 937-471-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRINGFLD OH
2008-11-14 937-303-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARYSVILLE OH
2008-11-06 937-985-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2008-11-06 937-985-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2008-11-06 937-985-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2008-11-06 937-985-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2008-10-29 937-549-5XXX 5000–5999Assigned FRONTIER NORTH, INC. - OH 0615 MANCHESTER OH
2008-10-29 937-752-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 SEAMAN OH
2008-10-15 937-265-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PITCHIN OH
2008-10-15 937-675-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J JAMESTOWN OH
2008-10-15 937-697-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CEDARVILLE OH
2008-10-13 937-451-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PIQUA OH
2008-10-03 937-661-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSBORO OH
2008-09-15 937-869-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 URBANA OH
2008-09-04 937-896-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 URBANA OH
2008-08-22 937-423-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE OH
2008-08-19 937-414-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-414-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-422-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-424-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-424-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-432-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-528-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-558-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-558-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2008-08-19 937-867-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DAYTON 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.