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
2016-09-02 937-309-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARYSVILLE OH
2016-09-02 937-569-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENVILLE OH
2016-08-25 937-977-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-08-25 937-977-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-08-23 937-941-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWCARLISL OH
2016-08-19 937-877-8XXX 8000–8999Assigned METROPCS, INC. 5562 TIPP CITY OH
2016-08-11 937-986-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEAVERCREK OH
2016-08-11 937-991-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DAYTON OH
2016-08-05 937-916-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PIQUA OH
2016-08-04 937-710-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SIDNEY OH
2016-07-27 937-986-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAVERCREK OH
2016-07-27 937-986-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAVERCREK OH
2016-07-22 937-990-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-22 937-990-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 XENIA OH
2016-07-19 937-807-9XXX 9000–9999Assigned WINDSTREAM OHIO, LLC 0665 COVINGTON OH
2016-07-19 937-988-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-988-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEAVERCREK OH
2016-07-19 937-991-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2016-07-07 937-249-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C ABERDEEN OH
2016-07-07 937-249-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C ABERDEEN OH
2016-07-01 937-991-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C DAYTON OH
2016-06-30 937-988-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BEAVERCREK OH
2016-06-21 937-882-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DONNELSVL OH
2016-06-20 937-991-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DAYTON OH
2016-06-09 937-918-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K VANDALIA OH
2016-06-06 937-990-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K XENIA OH
2016-05-26 937-991-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-26 937-991-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-26 937-991-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-26 937-991-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-26 937-991-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-26 937-991-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2016-05-02 937-975-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F WINCHESTER OH
2016-04-27 937-995-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FAIRBORN OH
2016-04-27 937-995-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FAIRBORN OH
2016-04-27 937-995-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FAIRBORN OH
2016-04-27 937-995-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FAIRBORN 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.