AS11406 CIGNA

CIGNA-1 - CIGNA · registered in the United States

IPv4 addresses8,7049 prefixes · <0.001% of announced IPv4

Rank in United States#3,156largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#9,926of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS11406 in ASN lookup Look up an IP in this network (170.48.0.1) All networks in United States

IPv4 prefixes

All 9 prefixes, in address order.

170.48.0.0/20
170.48.32.0/23
170.48.34.0/23
170.48.36.0/24
170.48.37.0/24
170.48.38.0/23
170.48.40.0/22
170.48.44.0/22
208.242.14.0/23

Other ASNs named CIGNA

1 other network uses the same organisation name; together with AS11406 they announce 17,408 IPv4 addresses.

ASNNameIPv4 addresses

AS13348CIGNA-2 - CIGNA US8,704

Similar-sized networks in United States

ASNNameIPv4 addresses

AS5090#3153 ARKANSASTECH - ARKANSAS TECH UNIVERSITY8,704

AS206#3154 CSC-IGN-AMER-AS206 - DXC US Latin America Corporation8,704

AS722#3155 DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD)8,704

AS13348#3157 CIGNA-2 - CIGNA8,704

AS13483#3158 INFOR-AS13483 - Infor (US), LLC8,704

AS13555#3159 EAGLE-NET-ALLIANCE - Zayo Bandwidth8,704

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