AS1097 Core Transit LLC

CORE-TRANSIT - Core Transit LLC · registered in the United States

IPv4 addresses4,86412 prefixes · <0.001% of announced IPv4

Rank in United States#4,171largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#13,924of 79,396 networks with IPv4

IPv616,418 x /486 prefixes

CountryUnited States18,679 ASNs registered there

Open AS1097 in ASN lookup Look up an IP in this network (23.145.20.1) All networks in United States

IPv4 prefixes

All 12 prefixes, in address order.

23.145.20.0/24
23.152.68.0/24
50.20.192.0/24
50.20.195.0/24
134.199.54.0/24
134.199.56.0/23
167.88.212.0/24
167.88.222.0/24
172.81.148.0/22
192.34.112.0/24
198.22.165.0/24
216.146.16.0/22

IPv6 prefixes

All 6 prefixes.

2602:81c:3000::/44
2602:81c:f000::/44
2607:77c0:1000::/36
2607:77c0:2000::/35
2607:77c0:4000::/47
2607:77c0:5000::/36

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AS396422#4173 3DS-AS01 - 3ds Communications LLC4,864

AS30612#4174 EAGLE-9-AS - Eagle Communications, Inc.4,864

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