ASN AS21563 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21563?

AS21563 is listed under Open Text Corporation.

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.

AS21563 Open Text Corporation

ASN Lookup Tool

Open Text Corporation opentext.com

CA 5 Routes

AS Data

AS21563

AS21563 – Open Text Corporation

AS Number	21563
AS Name	AS21563
Organization	Open Text Corporation(otc-68)
Country	CA
Website	opentext.com
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2014-07-30

ASN Intelligence API for production workflows

Use ASN data for AS21563 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
205.219.114.0/24	AS21563	Open Text Corporation	Covisint CH3 Hosting/Master Account	256
64.37.204.0/24	AS21563	Open Text Corporation	CenturyLink Communications, LLC	256
64.37.196.0/24	AS21563	Open Text Corporation	CenturyLink Communications, LLC	256
64.14.228.0/24	AS21563	Open Text Corporation	CenturyLink Communications, LLC	256
64.37.210.0/24	AS21563	Open Text Corporation	CenturyLink Communications, LLC	256

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:       21563
ASName:         AS21563
ASHandle:       AS21563
RegDate:        2014-07-30
Updated:        2019-08-22    
Ref:            https://rdap.arin.net/registry/autnum/21563


OrgName:        Open Text Corporation
OrgId:          OTC-68
Address:        275 Frank Tompa Drive
City:           Waterloo
StateProv:      ON
PostalCode:     N2L 0A1
Country:        CA
RegDate:        2018-12-17
Updated:        2025-11-12
Comment:        https://www.opentext.com
Ref:            https://rdap.arin.net/registry/entity/OTC-68


OrgNOCHandle: DA16-ORG-ARIN
OrgNOCName:   Open Text Corporation
OrgNOCPhone:  +1-519-888-7111 
OrgNOCEmail:  merdelyi@opentext.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/DA16-ORG-ARIN

OrgTechHandle: DA16-ORG-ARIN
OrgTechName:   Open Text Corporation
OrgTechPhone:  +1-519-888-7111 
OrgTechEmail:  merdelyi@opentext.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DA16-ORG-ARIN

OrgAbuseHandle: DA16-ORG-ARIN
OrgAbuseName:   Open Text Corporation
OrgAbusePhone:  +1-519-888-7111 
OrgAbuseEmail:  merdelyi@opentext.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DA16-ORG-ARIN

OrgAbuseHandle: EMAIL68-ARIN
OrgAbuseName:   Email Deliverablity
OrgAbusePhone:  +1-519-888-7111 
OrgAbuseEmail:  abuse@messagereach.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/EMAIL68-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
AS3561	CenturyLink Communications, LLC	US
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3549	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3549	Level 3 Parent, LLC	US

Contacts

Email Contacts

merdelyi@opentext.com

Abuse Contacts

abuse@messagereach.com