AS399722 Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas

AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,756largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,696of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399722 in ASN lookup Look up an IP in this network (208.79.25.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

208.79.25.0/24

Other ASNs named Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas

5 other networks use the same organisation name; together with AS399722 they announce 2,304 IPv4 addresses.

ASNNameIPv4 addresses

AS23494HSC - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas US1,024

AS21608HCSCNET10 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas US256

AS399432AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas US256

AS399433AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas US256

AS399721AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399714#17753 KIRKLAND-ELLIS-PS - Kirkland & Ellis LLP256

AS399716#17754 ISHIP-CORP - ISHIP, INC.256

AS399721#17755 AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas256

AS399737#17757 ETHERWARE - Etherware Solutions LLC256

AS399739#17758 TSYS-EQUINIX-FR6 - Global Payments Inc.256

AS399741#17759 BN-AS-01 - BAE Networks256

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