AS11623 CT Communications Network

CTCN - CT Communications Network · registered in the United States

IPv4 addresses8,1922 prefixes · <0.001% of announced IPv4

Rank in United States#3,250largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#10,227of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS11623 in ASN lookup Look up an IP in this network (65.75.224.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

65.75.224.0/20
67.43.192.0/20

IPv6 prefixes

All 1 prefix.

2607:8540::/32

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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