Autonomous system
AS13628 CENCORA-INTERNET
Unclassified ARIN
Summary
Cencora
business enterprise infrastructure
The AS handle carries the new corporate name while every address object still carries the old one, and the only reverse name that answers is a test environment.
What it's used for
- A pharmaceutical distributor's network. 7,936 addresses across eleven IPv4 prefixes, eight observed BGP neighbours, and no IPv6 announced.
Notable
- Nine blocks are netname
AMERISOURCEBERGEN, the company's former name, in capitals. 12.30.173.0/24is netnameAMERISOU44-173, truncating that name to eight characters.66.192.173.0/24is netnameTWTC-NETBLK-4, registered to a transit provider.- One of eighteen sampled addresses answered, as
mpsqa.amerisourcebergen.com. - First seen in the routing archive on 2002-08-02, an actual date rather than the archive's start.
Interesting
- Two letters at the end of that hostname mark a quality assurance environment, published in public DNS on a routed address. Test systems run older code and looser configuration than production, and naming one is an invitation to look at it first.
- The rebrand reached the AS object and stopped. Address registrations are filed once and edited rarely, so the registry is a reliable record of what a company used to be called.
- Eight upstreams for a distributor is unusual and appropriate. Wholesale pharmaceutical ordering runs to a schedule that pharmacies depend on daily, and paths are cheaper than missed deliveries.
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
8 upstream, 0 downstream and 8 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 11 prefixes · 7.94K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 11 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13628- Registry name
- CENCORA-INTERNET
- Registrant
- AMERISOURCEBERGEN
- Abuse contact
- domain_admin@cencora.com
- Registered
- 2005-09-21
- Last changed
- 2023-10-04
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 8% valid · 1 valid, 12 with no ROA
- ROAs
- 2 authorising AS13628
- ASPA
- no ASPA record
- IRR
- 92% registered · 12 of 13 announcements
- Route objects
- 25 naming AS13628
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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