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AS5640 University of Illinois

Q: Why is WHOIS data shown for an ASN?

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

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University of Illinois ncsa.illinois.edu

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AS Data

AS5640

AS5640 – University of Illinois

AS Number	5640
AS Name	NCSA-VBNS-EX
Organization	University of Illinois(ncsa-3-z)
Country	US
Website	ncsa.illinois.edu
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1995-07-18

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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:       5640
ASName:         NCSA-VBNS-EX
ASHandle:       AS5640
RegDate:        1995-07-18
Updated:        2024-02-12    
Ref:            https://rdap.arin.net/registry/autnum/5640


OrgName:        University of Illinois
OrgId:          NCSA-3-Z
Address:        NCSA
Address:        1205 W. Clark St
City:           Urbana
StateProv:      IL
PostalCode:     61801
Country:        US
RegDate:        2023-08-31
Updated:        2023-08-31
Ref:            https://rdap.arin.net/registry/entity/NCSA-3-Z


OrgTechHandle: ND63-ORG-ARIN
OrgTechName:   Network Development
OrgTechPhone:  +1-217-244-2909 
OrgTechEmail:  neteng@ncsa.illinois.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ND63-ORG-ARIN

OrgAbuseHandle: ND63-ORG-ARIN
OrgAbuseName:   Network Development
OrgAbusePhone:  +1-217-244-2909 
OrgAbuseEmail:  neteng@ncsa.illinois.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ND63-ORG-ARIN

RTechHandle: ND63-ORG-ARIN
RTechName:   Network Development
RTechPhone:  +1-217-244-2909 
RTechEmail:  neteng@ncsa.illinois.edu
RTechRef:    https://rdap.arin.net/registry/entity/ND63-ORG-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

Frequently Asked Questions

What is ASN AS5640?

ASN AS5640 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS5640?

AS5640 is listed under University of Illinois.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

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.