asn.dev

Autonomous system

AS31317 ANSCHLUSSWERK

Residential RIPE

IPv4 addresses 26.11K 16 prefixes
IPv6 prefixes 8 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 5 recorded by PCH
Upstreams 20 2 downstream
Flagged prefixes 0 none

Summary

AnschlussWerk

Germany · AI-generated

isp residential regional germany

The AS handle ANSCHLUSSWERK is held by AnschlussWerk GmbH, a regional telecommunications provider based in Traunstein, Germany.

What it's used for

  • The address space carries customer access traffic, evidenced by reverse DNS entries such as cust-0-164-209-31.ip-customer.net and clt-37.251.228.0.ip-anschluss.net.
  • The network announces 26,112 IPv4 addresses across 16 prefixes and 8 IPv6 prefixes, while maintaining 117 observed neighbours, indicating a role focused on serving end-user connectivity rather than pure transit.

Notable

  • Registrants largely align with the announcer, including AnschlussWerk GmbH and AnschlussWerk IP Admin, though some prefixes like 31.209.160.0/20 are registered to ip-fabric GmbH and 185.170.244.0/22 to inducio GmbH.
  • The address inventory is a mix of /20, /22, and /24 blocks, with netnames reflecting both direct ownership (DE-ANSCHLUSSWERK-) and third-party registrations (DE-IP-FABRIC-, DE-INDUCIO-*).

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

Recorded at 5 exchanges in 3 countries, largest first.

ExchangeLocationTheir address
DE-CIX FrankfurtFrankfurt, Germany80.81.194.104
DE-CIX MunichMunich, Germany185.1.208.137
Peering.czPrague, Czech Republic185.0.21.59
Vienna Internet ExchangeVienna, Austria193.203.0.44
Salzburg Internet eXchangeSalzburg, Austria185.1.43.15

Transit providers

20 upstream, 2 downstream and 35 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1299Arelion Sweden AB425
AS6939Hurricane Electric LLC370
AS3257GTT Communications Inc.195
AS34549meerfarbig GmbH & Co. KG80
AS12859BIT BV26
AS24482SG.GS26
AS29504Freenet Liberec, z.s.26
AS48362Stadtwerke Feldkirch26

All 20 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 16 prefixes · 26.11K addresses IPv6 8 prefixes

CountryNamePrefixes
DEGermany24

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS31317
Registry name
ANSCHLUSSWERK
Registrant
ANW-ROUTING-MNT
Abuse contact
abuse@anschlusswerk.de
Registered
2015-05-19
Last changed
2021-06-09
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 26 valid, 0 with no ROA
ROAs
26 authorising AS31317
ASPA
no ASPA record
IRR
100% registered · 26 of 26 announcements
Route objects
29 naming AS31317

Reputation

Classification and threat

Residential Fixed-line consumer ISP. Addresses here are homes.

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 1,773 prefixes, as published 2026-10-13. 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