ASN AS239 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS239?

AS239 is listed under University of Toronto.

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.

AS239 University of Toronto | IPGeolocation.io

ASN Lookup Tool

University of Toronto utoronto.ca

CA 18 Routes

AS Data

AS239

AS239 – University of Toronto

AS Number	239
AS Name	UTORONTO-AS
Organization	University of Toronto(univer-36)
Country	CA
Website	utoronto.ca
Number of IPv4 Routes	15
Number of IPv6 Routes	3
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1988-09-20

ASN Intelligence API for production workflows

Use ASN data for AS239 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
192.75.254.0/24	AS239	University of Toronto	University of Toronto	256
142.150.128.0/17	AS239	University of Toronto	University of Toronto	32768
142.150.0.0/16	AS239	University of Toronto	University of Toronto	65536
2631:1002:22::/48	AS239	University of Toronto	University of Toronto	~1×10²⁴
192.82.128.0/22	AS239	University of Toronto	University of Toronto	1024
192.12.176.0/21	AS239	University of Toronto	University of Toronto	2048
142.151.0.0/16	AS239	University of Toronto	University of Toronto	65536
138.51.0.0/16	AS239	University of Toronto	University of Toronto	65536
138.51.128.0/17	AS239	University of Toronto	University of Toronto	32768
142.1.0.0/16	AS239	University of Toronto	University of Toronto	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:       239
ASName:         UTORONTO-AS
ASHandle:       AS239
RegDate:        1988-09-20
Updated:        2009-07-31    
Ref:            https://rdap.arin.net/registry/autnum/239


OrgName:        University of Toronto
OrgId:          UNIVER-36
Address:        Information & Technology Services
Address:        4 Bancroft Avenue
Address:        ROOM 101C
City:           TORONTO
StateProv:      ON
PostalCode:     M5S 1C1
Country:        CA
RegDate:        1988-09-20
Updated:        2025-10-20
Ref:            https://rdap.arin.net/registry/entity/UNIVER-36


OrgTechHandle: RS2206-ARIN
OrgTechName:   Sutherland, Russell 
OrgTechPhone:  +1-416-978-0470 
OrgTechEmail:  russell.sutherland@utoronto.ca
OrgTechRef:    https://rdap.arin.net/registry/entity/RS2206-ARIN

OrgAbuseHandle: RS2206-ARIN
OrgAbuseName:   Sutherland, Russell 
OrgAbusePhone:  +1-416-978-0470 
OrgAbuseEmail:  russell.sutherland@utoronto.ca
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RS2206-ARIN

OrgNOCHandle: DCA264-ARIN
OrgNOCName:   Carson, Douglas 
OrgNOCPhone:  +1-416-978-6620 
OrgNOCEmail:  doug.carson@utoronto.ca
OrgNOCRef:    https://rdap.arin.net/registry/entity/DCA264-ARIN

OrgAbuseHandle: NSTEC-ARIN
OrgAbuseName:   NS-TECH
OrgAbusePhone:  +1-416-978-6620 
OrgAbuseEmail:  eis.net.eng@utoronto.ca
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NSTEC-ARIN

OrgTechHandle: NSTEC-ARIN
OrgTechName:   NS-TECH
OrgTechPhone:  +1-416-978-6620 
OrgTechEmail:  eis.net.eng@utoronto.ca
OrgTechRef:    https://rdap.arin.net/registry/entity/NSTEC-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
AS26677	ORION	CA

Upstreams

AS Number	Description	Country
AS26677	ORION	CA