AS18

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Summary

IP address summary information
Name	University of Texas at Austin
Country	United States
Website	host.io/utexas.edu·utexas.edu
Hosted domains	254
IPv4 addresses	299,008
IPv6 addresses	0
ASN type	Education
Registry	ARIN
Allocated	42 years ago on Jul 27, 1984
Updated	23 years ago on Jul 9, 2003

Ranking

#4,274

Overall rank

among 74,665 networks

Traffic

#1,894

Infrastructure

#13,013

#764inUnited States

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

United States
100%

Held location over 90 days: 100%
Held location over 1 year: 100%
Median days between moves: 460 days
Geolocation scope: City

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
128.62.0.0/16	University of Texas at Austin	65,536
128.83.0.0/16	University of Texas at Austin	65,536
129.116.0.0/16	University of Texas at Austin	65,536
146.6.0.0/16	University of Texas at Austin	65,536
198.213.192.0/18	University of Texas at Austin	16,384
206.76.64.0/18	University of Texas at Austin	16,384
198.214.80.0/20	University of Texas at Austin	4,096

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 254 domain names hosted across 64 IP addresses on this ASN.

IP Address	Domain	Count
128.83.21.174		66
146.6.162.203		35
146.6.219.59		20
128.83.139.191		15
146.6.225.137		11

Places

IPs in this network linked to physical places, based on their Wi-Fi networks.

Places IPs202
University200
Retail2

Category	In AS18	Example IP
University	200	128.62.100.13
Retail	2	198.214.80.184

New

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Places

Peers

There are 4 peers for this ASN.

ASN	Name	Rank
AS174	Cogent Communications, LLC
AS276	University of Texas System
AS1239	Cogent Communications, LLC
AS6922	Texas Department of Information Resources

Upstreams

There are 2 upstreams for this ASN.

ASN	Name	Rank
AS174	Cogent Communications, LLC
AS6922	Texas Department of Information Resources

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

Pingable IPs

416 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more

IP Address	ASN	Details
128.83.38.193 Ping	AS18University of Texas at Austin	5.41ms from Dallas, US
128.83.55.250 Ping	AS18University of Texas at Austin	5.62ms from Dallas, US
128.83.64.250 Ping	AS18University of Texas at Austin	5.52ms from Dallas, US
146.6.80.250 Ping	AS18University of Texas at Austin	5.58ms from Dallas, US
146.6.92.250 Ping	AS18University of Texas at Austin	5.63ms from Dallas, US
146.6.20.220 Ping	AS18University of Texas at Austin	5.38ms from Dallas, US
128.83.91.1 Ping	AS18University of Texas at Austin	5.39ms from San Antonio, US
129.116.200.20 Ping	AS18University of Texas at Austin	5.70ms from San Antonio, US
129.116.93.1 Ping	AS18University of Texas at Austin	5.36ms from San Antonio, US
146.6.186.1 Ping	AS18University of Texas at Austin	5.59ms from Dallas, US

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS18


128.83.37.66	Austin, United States
129.116.62.4	Austin, United States
146.6.14.38	Austin, United States
129.116.72.132	Austin, United States
146.6.16.30	Austin, United States

Important routers in AS18

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.Traceroute →

$ traceroute -a -n -q1 -f3 128.83.64.250

traceroute to 128.83.64.250 (128.83.64.250): 64 hops max, 52 byte packets

3 [AS36236] 162.223.9.42 0.544 ms

4 [AS18734] 206.223.118.28 0.608 ms

5 [AS6922] 192.124.220.38 5.446 ms

6 [AS6922] 192.12.10.6 7.552 ms

7 *

8 [AS18] 128.83.64.250 5.672 ms

Measurement taken from

IPinfo ProbeNet in Dallas, US

On September 10, 2026

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS18 at robtex.

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AS18

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS18

Important routers in AS18

Traceroute

Related Networks

AS10652

AS11615

AS14449

AS198109

AS31981

What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

Ranking

IP Ranges

Important routers in AS18

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

Places

AS10652

AS11615

AS14449

AS198109

AS31981

AS393777