Autonomous System

AS553 Universitaet Stuttgart

EducationActiveGermanyRIPE

AS553 (BELWUE) is an education network operated by Universitaet Stuttgart in Germany, registered with RIPE. It has 96 IPv4 prefixes with 2,325,504 addresses and 4 IPv6 prefixes, which makes it the 231st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses2,325,504in 96 prefixes
IPv6 prefixes4≈ 2.0 × 10³⁰ addresses
Size rank#231of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationUniversitaet Stuttgart
AS nameBELWUE
Websitewrgs-freiburg.de
Country Germany (DE)
Network typeEducation
RegistryRIPE
Abuse contactabuse@belwue.de
Registered2002-08-27
Last updated2026-08-28

IPv4 prefixes

96 prefixes · 2,325,504 addresses
NetworkAddressesFirst – last address
193.196.0.0/15131,072193.196.0.0 – 193.197.255.255
129.69.0.0/1665,536129.69.0.0 – 129.69.255.255
129.143.0.0/1665,536129.143.0.0 – 129.143.255.255
129.206.0.0/1665,536129.206.0.0 – 129.206.255.255
132.230.0.0/1665,536132.230.0.0 – 132.230.255.255
134.2.0.0/1665,536134.2.0.0 – 134.2.255.255
134.34.0.0/1665,536134.34.0.0 – 134.34.255.255
134.60.0.0/1665,536134.60.0.0 – 134.60.255.255
134.103.0.0/1665,536134.103.0.0 – 134.103.255.255
134.108.0.0/1665,536134.108.0.0 – 134.108.255.255
134.155.0.0/1665,536134.155.0.0 – 134.155.255.255
141.7.0.0/1665,536141.7.0.0 – 141.7.255.255
141.10.0.0/1665,536141.10.0.0 – 141.10.255.255
141.18.0.0/1665,536141.18.0.0 – 141.18.255.255
141.19.0.0/1665,536141.19.0.0 – 141.19.255.255
141.28.0.0/1665,536141.28.0.0 – 141.28.255.255
141.31.0.0/1665,536141.31.0.0 – 141.31.255.255
141.37.0.0/1665,536141.37.0.0 – 141.37.255.255
141.47.0.0/1665,536141.47.0.0 – 141.47.255.255
141.58.0.0/1665,536141.58.0.0 – 141.58.255.255
141.59.0.0/1665,536141.59.0.0 – 141.59.255.255
141.62.0.0/1665,536141.62.0.0 – 141.62.255.255
141.68.0.0/1665,536141.68.0.0 – 141.68.255.255
141.69.0.0/1665,536141.69.0.0 – 141.69.255.255
141.70.0.0/1665,536141.70.0.0 – 141.70.255.255
The 25 largest of 96. The API and the database have all of them.

IPv6 prefixes

4 prefixes
  • 2001:7c0::/29
  • 2a06:ec00::/29
  • 2a0e:3c0::/29
  • 2001:7c0::/32

Query AS553 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=AS553&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS553, with or without a key:

curl "https://api.ipapi.is/?q=193.196.0.1"

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