asn.dev

Autonomous system

AS205477 SENNHEISER-KG

Unclassified RIPE

IPv4 addresses 1.02K 1 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

Sennheiser

Germany · AI-generated

business corporate audio germany

The AS handle SENNHEISER-KG is held by Sennheiser Electronic SE.

What it's used for

  • The space carries corporate infrastructure, evidenced by the netname DE-SENNHEISER-20170811 and registrant Sennheiser Electronic SE.
  • The network announces 1024 IPv4 addresses and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small internal corporate estate rather than a transit or access provider.
  • Traffic from this AS consists of office workers, internal systems, and web endpoints for the audio equipment manufacturer.

Notable

  • The registrant Sennheiser Electronic SE agrees with the announcer, confirming direct ownership of the address space.
  • The address inventory consists of a single IPv4 block 185.217.44.0/22 and one IPv6 prefix 2a0b:c340::/29, representing a compact and self-contained corporate network.

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 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13045htp GmbH58
AS3320Deutsche Telekom AG34

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, 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 1 prefixes · 1.02K addresses IPv6 1 prefixes

CountryNamePrefixes
DEGermany2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS205477
Registry name
Sennheiser-KG
Registrant
de-sennheiser-1-mnt
Abuse contact
ip-admin@sennheiser.com
Registered
2017-08-11
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS205477
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS205477

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