AS3431 ESnet

ESNET-AS - ESnet · registered in the United States

IPv4 addresses1,0244 prefixes · <0.001% of announced IPv4

Rank in United States#8,027largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#36,194of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS3431 in ASN lookup Look up an IP in this network (192.5.166.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

192.5.166.0/24
192.73.7.0/24
192.73.62.0/24
192.150.242.0/24

Other ASNs named ESnet

6 other networks use the same organisation name; together with AS3431 they announce 734,464 IPv4 addresses.

ASNNameIPv4 addresses

AS291ESNET-EAST - ESnet US262,144

AS292ESNET-WEST - ESnet US262,144

AS293ESNET - ESnet US140,288

AS3428ESNET-AS - ESnet US68,096

AS3425ESNET-AS - ESnet US512

AS3443ESNET-AS - ESnet US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS2567#8024 SLB-WESTERNGECO-AS - Schlumberger Limited1,024

AS2729#8025 MG-431-2729 - One Call1,024

AS2933#8026 NETNODE - Real/Time Communications1,024

AS3507#8028 IPSWAT TEAM - IPSwat LLC1,024

AS3704#8029 ISPNET-AS - isp.net1,024

AS3789#8030 ESSENTIAHEALTH-3789 - Essentia Health East1,024

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