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AS26072
AS26072 FirstEnergy Corp.
FIRSTENERGY - FirstEnergy Corp. · registered in the United States
IPv4 addresses 67,840 31 prefixes · 0.002% of announced IPv4
Rank in United States #825 largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide #2,531 of 79,396 networks with IPv4
IPv6 576 x /48 8 prefixes
IPv4 prefixes
All 31 prefixes, in address order.
64.119.240.0/24 148.108.0.0/19 148.108.32.0/21 148.108.40.0/21 148.108.48.0/20 148.108.64.0/22 148.108.68.0/24 148.108.69.0/24 148.108.70.0/23 148.108.72.0/21 148.108.80.0/20 148.108.96.0/24 148.108.97.0/24 148.108.98.0/24 148.108.99.0/24 148.108.100.0/22 148.108.104.0/21 148.108.112.0/20 148.108.128.0/18 148.108.192.0/21 148.108.200.0/24 148.108.201.0/24 148.108.202.0/23 148.108.204.0/22 148.108.208.0/23 148.108.210.0/24 148.108.211.0/24 148.108.212.0/22 148.108.216.0/21 148.108.224.0/19 205.132.72.0/21
IPv6 prefixes
All 8 prefixes.
2620:17e::/43 2620:17e:20::/48 2620:17e:21::/48 2620:17e:22::/47 2620:17e:24::/46 2620:17e:28::/45 2620:17e:30::/44 2620:17e:400::/39
Similar-sized networks in United States
ASN Name IPv4 addresses
AS11252 #822 ISU-NET-AS - Idaho State University68,096
AS15164 #823 UPNLLC - Unite Private Networks LLC.67,840
AS33398 #824 HOSTA-LAS - Miva Merchant, Inc.67,840
AS3923 #826 FAA-MMAC - Federal Aviation Administration67,840
AS1204 #827 SUNYNET-ASN-AS - The State University of New York67,840
AS11809 #828 NET-ERAU-PRC - Embry-Riddle University67,840
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources