ASN AS18 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18?

AS18 is listed under University of Texas at Austin.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS18 University of Texas at Austin

ASN Lookup Tool

University of Texas at Austin its.utexas.edu

US 8 Routes

AS Data

AS18

AS18 – University of Texas at Austin

AS Number	18
AS Name	UTEXAS
Organization	University of Texas at Austin(utaa)
Country	US
Website	its.utexas.edu
Number of IPv4 Routes	8
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1984-07-27

ASN Intelligence API for production workflows

Use ASN data for AS18 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
129.116.0.0/16	AS18	University of Texas at Austin	University of Texas at Austin	65536
146.6.0.0/16	AS18	University of Texas at Austin	University of Texas at Austin	65536
128.83.0.0/16	AS18	University of Texas at Austin	University of Texas at Austin	65536
198.214.250.0/23	AS18	University of Texas at Austin	TEXAS EDUCATIONAL AND SPORTS NETWORK, LLC	512
198.214.80.0/20	AS18	University of Texas at Austin	University of Texas at Austin	4096
206.76.64.0/18	AS18	University of Texas at Austin	University of Texas at Austin	16384
198.213.192.0/18	AS18	University of Texas at Austin	University of Texas at Austin	16384
128.62.0.0/16	AS18	University of Texas at Austin	University of Texas at Austin	65536

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       18
ASName:         UTEXAS
ASHandle:       AS18
RegDate:        1984-07-27
Updated:        2003-07-09    
Ref:            https://rdap.arin.net/registry/autnum/18


OrgName:        University of Texas at Austin
OrgId:          UTAA
Address:        ITS - Telecommunications and Networking
Address:        1 University Station, C2900
City:           Austin
StateProv:      TX
PostalCode:     78705
Country:        US
RegDate:        
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/UTAA


OrgTechHandle: ZU83-ARIN
OrgTechName:   Network Operations Center
OrgTechPhone:  +1-512-232-5743 
OrgTechEmail:  net-tech@its.utexas.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ZU83-ARIN

OrgAbuseHandle: ZU83-ARIN
OrgAbuseName:   Network Operations Center
OrgAbusePhone:  +1-512-232-5743 
OrgAbuseEmail:  net-tech@its.utexas.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZU83-ARIN

RTechHandle: ZU83-ARIN
RTechName:   Network Operations Center
RTechPhone:  +1-512-232-5743 
RTechEmail:  net-tech@its.utexas.edu
RTechRef:    https://rdap.arin.net/registry/entity/ZU83-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS1239	Cogent Communications, LLC	US
AS6922	Texas Department of Information Resources	US
AS174	Cogent Communications, LLC	US
AS276	University of Texas System	US

Upstreams

AS Number	Description	Country
AS6922	Texas Department of Information Resources	US
AS174	Cogent Communications, LLC	US
AS276	University of Texas System	US