Autonomous System
AS42184 TKRZ Stadtwerke GmbH
ISPActiveGermanyRIPE
AS42184 (AS-TKRZ) is an ISP network operated by TKRZ Stadtwerke GmbH in Germany, registered with RIPE. It has 13 IPv4 prefixes with 18,688 addresses and 1 IPv6 prefix, which makes it the 7,130th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses18,688in 13 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#7,130of 82,200 active ASNs
Details
OrganizationTKRZ Stadtwerke GmbH
AS nameAS-TKRZ
Websitetkrz.de
Country Germany (DE)
Network typeISP
RegistryRIPE
Abuse contactabuse@tkrz.de
Registered2007-01-10
Last updated2026-09-11
IPv4 prefixes
13 prefixes · 18,688 addresses| Network | Addresses | First – last address |
|---|---|---|
| 89.251.128.0/20 | 4,096 | 89.251.128.0 – 89.251.143.255 |
| 91.190.224.0/21 | 2,048 | 91.190.224.0 – 91.190.231.255 |
| 178.251.8.0/21 | 2,048 | 178.251.8.0 – 178.251.15.255 |
| 188.64.248.0/21 | 2,048 | 188.64.248.0 – 188.64.255.255 |
| 45.82.124.0/22 | 1,024 | 45.82.124.0 – 45.82.127.255 |
| 88.218.84.0/22 | 1,024 | 88.218.84.0 – 88.218.87.255 |
| 185.64.168.0/22 | 1,024 | 185.64.168.0 – 185.64.171.255 |
| 185.72.200.0/22 | 1,024 | 185.72.200.0 – 185.72.203.255 |
| 185.124.232.0/22 | 1,024 | 185.124.232.0 – 185.124.235.255 |
| 185.143.168.0/22 | 1,024 | 185.143.168.0 – 185.143.171.255 |
| 185.153.140.0/22 | 1,024 | 185.153.140.0 – 185.153.143.255 |
| 194.15.152.0/22 | 1,024 | 194.15.152.0 – 194.15.155.255 |
| 194.49.22.0/24 | 256 | 194.49.22.0 – 194.49.22.255 |
89.251.128.0/20 91.190.224.0/21 178.251.8.0/21 188.64.248.0/21 45.82.124.0/22 88.218.84.0/22 185.64.168.0/22 185.72.200.0/22 185.124.232.0/22 185.143.168.0/22 185.153.140.0/22 194.15.152.0/22 194.49.22.0/24
IPv6 prefixes
1 prefix- 2a02:f08::/32
2a02:f08::/32
Query AS42184 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS42184&key=YOUR_API_KEY"Any address in its prefixes resolves to AS42184, with or without a key:
curl "https://api.ipapi.is/?q=89.251.128.1"Largest networks in Germany
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