ASN Lookup Tool

University of Illinois illinois.edu US US 9 Routes

AS Data

AS38

AS38 – University of Illinois

AS Number 38
AS Name UIUC
Organization University of Illinois(uiuc-z)
Country US
Website illinois.edu
Number of IPv4 Routes 7
Number of IPv6 Routes 2
ASN type EDUCATION
Registry ARIN
Date Allocated 1985-01-24

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Use ASN data for AS38 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
72.36.97.0/26 64
72.36.96.0/20 4096
72.36.80.0/23 512
192.17.0.0/16 65536
128.174.0.0/16 65536
72.36.64.0/18 16384
130.126.0.0/16 65536
2620:0:e01::/48 ~1×10²⁴
2620:0:e00::/48 ~1×10²⁴

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:       38
ASName:         UIUC
ASHandle:       AS38
RegDate:        1985-01-24
Updated:        2022-02-23    
Ref:            https://rdap.arin.net/registry/autnum/38


OrgName:        University of Illinois
OrgId:          UIUC-Z
Address:        1120 DCL, MC-256
Address:        1304 West Springfield Avenue
City:           Urbana
StateProv:      IL
PostalCode:     61801
Country:        US
RegDate:        2021-11-03
Updated:        2021-11-03
Ref:            https://rdap.arin.net/registry/entity/UIUC-Z


OrgTechHandle: HOSTM159-ARIN
OrgTechName:   Hostmgr
OrgTechPhone:  +1-217-244-1000 
OrgTechEmail:  dns-admin@illinois.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM159-ARIN

OrgAbuseHandle: UIUCS-ARIN
OrgAbuseName:   UIUC Security
OrgAbusePhone:  +1-217-265-0000 
OrgAbuseEmail:  abuse@illinois.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/UIUCS-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
AS1224 University of Illinois US
AS293 ESnet US
AS40387 University of Illinois US
AS11537 Internet2 US

Upstreams

AS Number Description Country
AS40387 University of Illinois US
AS11537 Internet2 US

Contacts

Email Contacts

dns-admin@illinois.edu

Abuse Contacts

abuse@illinois.edu

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Frequently Asked Questions

ASN AS38 is an Autonomous System Number used to identify a network for BGP internet routing.
AS38 is listed under University of Illinois.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.