AS33239 Center for Internet Security

CIS-MSISAC - Center for Internet Security · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#11,398largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#50,965of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS33239 in ASN lookup Look up an IP in this network (69.195.43.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

69.195.43.0/24
192.58.118.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS33173#11395 MYGN-US - Myriad Genetics Incorporated512

AS33206#11396 ESI - Estech Systems, Inc512

AS33208#11397 EPIC-HOSTING-3 - Epic Hosting, LLC512

AS33316#11399 AV-INC - AeroVironment, Inc.512

AS33318#11400 AS-AHC-80 - Agfa HealthCare Corporation512

AS33347#11401 NAVICENT - NAVICENT HEALTH512

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