Autonomous system
AS21563 AS21563 - Open Text Corporation
Unclassified ARIN
Summary
OpenText
business software canada
AS21563 is operated by OpenText Corporation, a Canadian information management software company.
What it's used for
- The address space carries hosting infrastructure, as evidenced by reverse DNS entries pointing to
host64.covisint.com,host127.covisint.com, andhost190.covisint.comacross all announced prefixes. - The AS announces 1280 IPv4 addresses across 5 prefixes in Canada, with only 1 observed neighbour, indicating a small, self-contained corporate network rather than a transit or access provider.
Notable
- Registrants for the majority of prefixes are listed as CenturyLink Communications, LLC with netnames like
CENTURYLINK-LEGACY-SAVVIS-BLK222, while one prefix is registered to Covisint CH3 Hosting/Master Account, suggesting the space was acquired or leased from legacy telecom or hosting providers. - The inventory consists of five /24 blocks, all located in Canada, with no IPv6 prefixes announced.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3549 | Level 3 Parent, LLC | 305 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-29, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.28K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CA | Canada | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21563- Registry name
- AS21563
- Registrant
- Open Text Corporation
- Abuse contact
- abuse@messagereach.com
- Registered
- 2014-07-30
- Last changed
- 2019-08-22
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 5 with no ROA
- ROAs
- 0 authorising AS21563
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 5 announcements
- Route objects
- 0 naming AS21563
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 448 networks and 1,849 prefixes, as published 2026-10-29. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere