Autonomous System
AS20633 Johann Wolfgang Goethe-Universitat Frankfurt am Main
EducationActiveGermanyRIPE
AS20633 (UNIFFM-NET) is an education network operated by Johann Wolfgang Goethe-Universitat Frankfurt am Main in Germany, registered with RIPE. It has 2 IPv4 prefixes with 66,560 addresses and 1 IPv6 prefix, which makes it the 3,291st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses66,560in 2 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#3,291of 82,200 active ASNs
Details
OrganizationJohann Wolfgang Goethe-Universitat Frankfurt am Main
AS nameUNIFFM-NET
Websiteuni-frankfurt.de
Country Germany (DE)
Network typeEducation
RegistryRIPE
Abuse contactabuse@rz.uni-frankfurt.de
Registered1970-01-01
Last updated2026-02-15
IPv4 prefixes
2 prefixes · 66,560 addresses| Network | Addresses | First – last address |
|---|---|---|
| 141.2.0.0/16 | 65,536 | 141.2.0.0 – 141.2.255.255 |
| 185.193.228.0/22 | 1,024 | 185.193.228.0 – 185.193.231.255 |
141.2.0.0/16 185.193.228.0/22
IPv6 prefixes
1 prefix- 2001:a38::/32
2001:a38::/32
Query AS20633 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=AS20633&key=YOUR_API_KEY"Any address in its prefixes resolves to AS20633, with or without a key:
curl "https://api.ipapi.is/?q=141.2.0.1"Largest networks in Germany
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