AS291 ESnet

ESNET-EAST - ESnet · registered in the United States

IPv4 addresses262,1441 prefixes · 0.008% of announced IPv4

Rank in United States#267largest network in US by IPv4 space, of 18,338 · 0.02% of US

Rank worldwide#910of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS291 in ASN lookup Look up an IP in this network (198.124.0.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

198.124.0.0/14

Other ASNs named ESnet

6 other networks use the same organisation name; together with AS291 they announce 734,464 IPv4 addresses.

ASNNameIPv4 addresses

AS292ESNET-WEST - ESnet US262,144

AS293ESNET - ESnet US140,288

AS3428ESNET-AS - ESnet US68,096

AS3431ESNET-AS - ESnet US1,024

AS3425ESNET-AS - ESnet US512

AS3443ESNET-AS - ESnet US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS299#264 UCINET-AS - University of California, Irvine262,404

AS14298#265 EPA-NET - Environmental Protection Agency262,400

AS82#266 OPENTEXT - Attachmate Corp.262,400

AS292#268 ESNET-WEST - ESnet262,144

AS11377#269 SENDGRID - SendGrid, Inc.262,144

AS26662#270 XEROX-WV - XEROX CORPORATION262,144

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