Autonomous system
AS42184 AS-TKRZ
Unclassified RIPE NSP
Summary
TKRZ Stadtwerke
isp business it datacenter
AS-TKRZ is held by TKRZ Stadtwerke GmbH.
What it's used for
- The address space carries IT services and ISP infrastructure, evidenced by netnames such as
DE-TKRZ-STADTWERKE-20070109andDE-MICROPLAN-20060911. - The AS announces 18,688 IPv4 addresses across 13 prefixes and 2 IPv6 prefixes, while maintaining 146 observed neighbours.
- As a subsidiary of Stadtwerke Emsdetten GmbH with over 20 years of experience as an IT service provider, the network supports business clients, data center operations, and internet service provision.
Notable
- Registrants for the majority of prefixes are TKRZ Stadtwerke GmbH, while
89.251.128.0/20is registered to microPLAN IT Systemhaus GmbH and88.218.84.0/22and185.72.200.0/22are registered to nvb Nordhorner Versorgungsbetriebe GmbH. - TKRZ Stadtwerke GmbH is a 100% subsidiary of Stadtwerke Emsdetten GmbH.
- The inventory consists of a mix of /21, /22, and /24 IPv4 blocks, with the largest being
89.251.128.0/20.
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
Recorded at 6 exchanges in 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.192.178 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.210.6 |
| DE-CIX Dusseldorf | Düsseldorf, Germany | 185.1.170.16 |
| DE-CIX Munich | Munich, Germany | 185.1.208.147 |
| Peering.cz | Prague, Czech Republic | 185.0.21.15 |
| DE-CIX Hamburg | Hamburg, Germany | 185.1.210.102 |
Transit providers
30 upstream, 12 downstream and 73 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 13 prefixes · 18.69K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 15 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS42184- Registry name
- AS-TKRZ
- Registrant
- MNT-TKRZ
- Abuse contact
- abuse@tkrz.de
- Registered
- 2007-01-10
- Last changed
- 2026-09-11
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- TKRZ Stadtwerke
- Network type
- NSP
- Scope
- Europe
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-TKRZ- Present at
- 7 exchanges
- Facilities
- 9 facilities
- Website
- https://www.tkrz-business.de
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 14 valid, 0 with no ROA
- ROAs
- 16 authorising AS42184
- ASPA
- 7 declared providers
- IRR
- 100% registered · 14 of 14 announcements
- Route objects
- 75 naming AS42184
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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