ASN AS823 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS823?

AS823 is listed under University of Western Ontario.

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.

AS823 University of Western Ontario

ASN Lookup Tool

University of Western Ontario uwo.ca

CA 25 Routes

AS Data

AS823

AS823 – University of Western Ontario

AS Number	823
AS Name	UWO-AS
Organization	University of Western Ontario(uwo-z)
Country	CA
Website	uwo.ca
Number of IPv4 Routes	24
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1994-03-11

ASN Intelligence API for production workflows

Use ASN data for AS823 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
129.100.216.0/23	AS823	University of Western Ontario	University of Western Ontario	512
129.100.80.0/21	AS823	University of Western Ontario	University of Western Ontario	2048
129.100.0.0/24	AS823	University of Western Ontario	University of Western Ontario	256
129.100.220.0/23	AS823	University of Western Ontario	University of Western Ontario	512
129.100.212.0/23	AS823	University of Western Ontario	University of Western Ontario	512
129.100.204.0/24	AS823	University of Western Ontario	University of Western Ontario	256
2605:500::/32	AS823	University of Western Ontario	University of Western Ontario	~79×10²⁷
129.100.202.0/23	AS823	University of Western Ontario	University of Western Ontario	512
129.100.206.0/23	AS823	University of Western Ontario	University of Western Ontario	512
129.100.198.0/23	AS823	University of Western Ontario	University of Western Ontario	512

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:       823
ASName:         UWO-AS
ASHandle:       AS823
RegDate:        1994-03-11
Updated:        2021-05-05    
Ref:            https://rdap.arin.net/registry/autnum/823


OrgName:        University of Western Ontario
OrgId:          UWO-Z
Address:        Western Technology Services
Address:        1393 Western Road
Address:        Rm SSB 4352
City:           London
StateProv:      ON
PostalCode:     N6G-1G9
Country:        CA
RegDate:        2021-02-17
Updated:        2025-10-14
Ref:            https://rdap.arin.net/registry/entity/UWO-Z


OrgAbuseHandle: NOC310-ARIN
OrgAbuseName:   Network Operations Centre
OrgAbusePhone:  +1-519-661-3525 
OrgAbuseEmail:  noc@uwo.ca
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC310-ARIN

OrgTechHandle: NOC310-ARIN
OrgTechName:   Network Operations Centre
OrgTechPhone:  +1-519-661-3525 
OrgTechEmail:  noc@uwo.ca
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC310-ARIN

RAbuseHandle: NAC96-ARIN
RAbuseName:   Network Abuse Contact
RAbusePhone:  +1-519-661-3525 
RAbuseEmail:  abuse@uwo.ca
RAbuseRef:    https://rdap.arin.net/registry/entity/NAC96-ARIN

RTechHandle: NOC310-ARIN
RTechName:   Network Operations Centre
RTechPhone:  +1-519-661-3525 
RTechEmail:  noc@uwo.ca
RTechRef:    https://rdap.arin.net/registry/entity/NOC310-ARIN

RNOCHandle: NOC310-ARIN
RNOCName:   Network Operations Centre
RNOCPhone:  +1-519-661-3525 
RNOCEmail:  noc@uwo.ca
RNOCRef:    https://rdap.arin.net/registry/entity/NOC310-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
AS13335	Cloudflare, Inc.	US
AS819	LARG*net London and Region Global Computer Network	CA
AS819	LARG net London and Region Global Computer Network	CA

Upstreams

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US
AS819	LARG net London and Region Global Computer Network	CA