asn.dev

Autonomous system

AS20633 UNIFFM-NET cords@rz.uni-frankfurt.de 20101227

Unclassified RIPE

IPv4 addresses 66.56K 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 1 recorded by PCH
Upstreams 15 0 downstream
Flagged prefixes 0 none

Summary

Goethe University Frankfurt

Germany · AI-generated

education research university germany

UNIFFM-NET is operated by Johann Wolfgang Goethe-Universität Frankfurt am Main.

What it's used for

  • The address space carries university infrastructure, evidenced by the netname UNIFFM-NET and reverse DNS entries pointing to net.uni-frankfurt.de.
  • The AS announces 66,560 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 108 observed neighbours; this ratio indicates a large-scale access network for an educational institution rather than a transit provider.

Notable

  • Registrants for both announced prefixes, 141.2.0.0/16 and 185.193.228.0/22, are consistently listed as Johann Wolfgang Goethe-Universitat Frankfurt am Main; uniffm staff, aligning perfectly with the AS holder.
  • The inventory consists of one large /16 block and one smaller /22 block, reflecting a typical corporate or institutional address allocation structure.

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 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
DE-CIX FrankfurtFrankfurt, Germany80.81.192.146

Transit providers

15 upstream, 0 downstream and 23 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS88811&1 Versatel GmbH91
AS6939Hurricane Electric LLC23
AS680Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.16
AS34549meerfarbig GmbH & Co. KG4
AS24482SG.GS3
AS34019Hivane Association3
AS48362Stadtwerke Feldkirch3
AS212024Marc Schmitt3

All 15 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 2 prefixes · 66.56K addresses IPv6 1 prefixes

CountryNamePrefixes
DEGermany3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS20633
Registry name
UNIFFM-NET
Registrant
Johann Wolfgang Goethe-Universitat Frankfurt am Main
Abuse contact
abuse@rz.uni-frankfurt.de
Registered
1970-01-01
Last changed
2026-02-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
3 authorising AS20633
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS20633

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: 442 networks and 1,783 prefixes, as published 2026-10-20. 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