asn.dev

Autonomous system

AS12371 AVENCY Kiebitzpohl 77

Unclassified RIPE

IPv4 addresses 24.32K 6 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

avency

Germany · AI-generated

isp hosting business legacy

A German IT services company in the Münster region, selling connectivity and hosting to business customers.

What it's used for

  • Business connectivity and hosted services. 24,320 addresses over six prefixes, one IPv6 /32, one observed BGP neighbour.

Notable

  • Every netname reads DE-UNI-X, dated 970808 and 990317 — the company's earlier name, still labelling five of the six blocks.
  • Five of the prefixes are consecutive pieces of 195.60.96.0/19: a /20, a /21, a /22, a /23 and a /24, each half the size of the last.
  • The registry lists "Abteilung Technik" as a contact — the technical department, as a department rather than a person.
  • The AS handle holds a street address, Kiebitzpohl 77, in place of a description.

Interesting

  • A descending ladder of prefixes out of one range is what happens when a block is handed out a piece at a time and each piece gets announced as it is used. The shape is a record of growth, and it also means the covering /19 is never announced as such — the parts are visible and the whole is not.
  • UNI-X in five netnames and avency on the door is the ordinary fate of a rebrand. Address registrations are updated when something forces the issue, and a name in a netname field forces nothing.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9145EWE TEL GmbH109
AS3320Deutsche Telekom AG42

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 6 prefixes · 24.32K addresses IPv6 1 prefixes

CountryNamePrefixes
DEGermany7

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS12371
Registry name
AVENCY
Registrant
avency GmbH
Abuse contact
abuse@avency.de
Registered
2001-12-13
Last changed
2017-11-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS12371
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS12371

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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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

Cross-check