AS400545 Cygnus Communications

CYGNUS-COMMUNICATIONS - Cygnus Communications · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,922largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,883of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS400545 in ASN lookup Look up an IP in this network (23.136.104.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

23.136.104.0/24

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ASNNameIPv4 addresses

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AS400559#17924 BOSTON-BROADBAND - Boston Broadband256

AS400567#17925 CHRISTIAN-CARE-MINISTRIES - Christian Care Ministries, Inc.256

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