AS33194 Chemical Abstracts Service

CAS-AUTONOMOUS-SYSTEM - Chemical Abstracts Service · registered in the United States

IPv4 addresses65,53622 prefixes · 0.002% of announced IPv4

Rank in United States#1,240largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,321of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS33194 in ASN lookup Look up an IP in this network (134.243.0.1) All networks in United States

IPv4 prefixes

All 22 prefixes, in address order.

134.243.0.0/22
134.243.4.0/23
134.243.6.0/23
134.243.8.0/21
134.243.16.0/20
134.243.32.0/20
134.243.48.0/23
134.243.50.0/24
134.243.51.0/24
134.243.52.0/22
134.243.56.0/21
134.243.64.0/20
134.243.80.0/22
134.243.84.0/23
134.243.86.0/24
134.243.87.0/24
134.243.88.0/23
134.243.90.0/24
134.243.91.0/24
134.243.92.0/22
134.243.96.0/19
134.243.128.0/17

Similar-sized networks in United States

ASNNameIPv4 addresses

AS33030#1237 COLLEGE-OF-WOOSTER - College of Wooster65,536

AS33153#1238 SCAP-AS - The State University of New York at Potsdam65,536

AS33170#1239 MORGAN-STATE-UNIVERSITY - Morgan State University65,536

AS33217#1241 SCHNEIDER - Schneider National, Inc.65,536

AS33235#1242 SANJUAN - San Juan Unified School District65,536

AS33434#1243 HAMILTON-COLLEGE - Hamilton College65,536

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