Autonomous system
AS27365 CENGAGE-OHCIN - Cengage Learning, Inc.
Unclassified ARIN
Summary
Cengage Learning
business education corporate
CENGAGE-OHCIN is the autonomous system for Cengage Learning, Inc.
What it's used for
- The address space is registered under the netname
CENGAGENETand is used for the corporate infrastructure of a higher education publisher. - The AS announces 14336 IPv4 addresses across 21 prefixes with only 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
Notable
- All registrants in the provided sample are
Cengage Learning, Inc., which aligns perfectly with the AS holder. - The address inventory consists of a mix of /21, /22, /23, and /24 blocks within the 69.32.0.0/16 range, reflecting a finely subdivided internal estate.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 20 prefixes · 14.08K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 20 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27365- Registry name
- CENGAGE-OHCIN
- Registrant
- Cengage Learning, Inc.
- Abuse contact
- netadmin@cengage.com
- Registered
- 2003-02-20
- Last changed
- 2016-05-17
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 28 with no ROA
- ROAs
- 0 authorising AS27365
- ASPA
- no ASPA record
- IRR
- 96% registered · 27 of 28 announcements
- Route objects
- 34 naming AS27365
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: 454 networks and 1,854 prefixes, as published 2026-11-06. 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