Autonomous system
AS13167 MERCK-KGAA Darmstadt Germany
Unclassified RIPE
Summary
Merck KGaA
enterprise business research
The IPv6 announcements double in size at every step, the signature of an automated range splitter.
What it's used for
- The corporate network of a German pharmaceutical and chemicals company. 67,584 addresses across five IPv4 prefixes, sixteen IPv6 prefixes, and four observed BGP neighbours.
Notable
- The IPv6 list runs
2001:4cf8:2001::/48,2002::/47,2004::/46,2008::/45,2010::/44,2020::/43,2040::/42,2080::/41,2100::/40, under a parent2001:4cf8::/35. - The largest IPv4 prefix is
155.250.0.0/16; its registry lookup failed. - The AS handle is
MERCK-KGAA Darmstadt Germany, with two spaces before the country. - Fifteen addresses were sampled and none returned a name.
Interesting
- Each of those IPv6 prefixes is exactly twice the previous one, starting at the boundary immediately after it ends. That is what happens when software is asked to cover a range whose edges do not fall on a single prefix boundary: it emits the smallest set that fits, and the sizes cascade. No person chooses nine prefixes in that pattern.
- The parent
/35is announced alongside the pieces, so the covering route and the specifics are both in the table at once. - Four neighbours for a 67,000-address corporate network is a company buying resilient connectivity rather than selling any, which is what nearly every enterprise AS number is for.
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 2026-10-18, 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 · 67.58K addresses IPv6 30 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 35 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS13167- Registry name
- Merck-KGaA
- Registrant
- AS13167-MNT
- Abuse contact
- ripeadmin@merckgroup.com
- Registered
- 1970-01-01
- Last changed
- 2025-12-16
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS13167
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 5 naming AS13167
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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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