AS18 University of Texas at Austin

UTEXAS - University of Texas at Austin · registered in the United States

IPv4 addresses299,5208 prefixes · 0.010% of announced IPv4

Rank in United States#234largest network in US by IPv4 space, of 18,338 · 0.02% of US

Rank worldwide#815of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS18 in ASN lookup Look up an IP in this network (128.62.0.1) All networks in United States

IPv4 prefixes

All 8 prefixes, in address order.

128.62.0.0/16
128.83.0.0/16
129.116.0.0/16
146.6.0.0/16
198.213.192.0/18
198.214.80.0/20
198.214.250.0/23
206.76.64.0/18

Other ASNs named University of Texas at Austin

1 other network uses the same organisation name; together with AS18 they announce 356,864 IPv4 addresses.

ASNNameIPv4 addresses

AS32093TACCNET - University of Texas at Austin US57,344

Similar-sized networks in United States

ASNNameIPv4 addresses

AS11320#231 LIGHTEDGE-AS-02 - LightEdge Solutions305,920

AS6922#232 TEXASAGENCYNET - Texas Department of Information Resources304,640

AS21852#233 DISNW1 - State Of Arkansas, Division of Information Systems304,640

AS683#235 ARGONNE-AS - Argonne National Laboratory297,216

AS11714#236 NETWORK NEBRASKA - Network Nebraska294,400

AS557#237 UMAINE-SYS-AS - University of Maine System292,608

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