Autonomous system
AS208790 STEPAN-DUDA
Unclassified RIPE
Summary
Stepan Duda
research ipv6 personal
The AS handle STEPAN-DUDA is held by Stepan Duda.
What it's used for
- The address space consists exclusively of two IPv6 prefixes:
2a0f:85c1:c1a::/48and2a14:7580:f1d0::/44. - With 0 IPv4 addresses and 2 IPv6 prefixes against 3 observed neighbours, the inventory is minimal and consistent with a small-scale research or personal network rather than a commercial service provider.
- PeeringDB classifies the operator as Educational/Research, and secondary sources identify Stepan Duda as an individual associated with Brno University of Technology in Czechia.
Notable
- The registry holder name matches the AS handle and the individual identified in secondary sources.
- The address inventory is limited to IPv6 space, with no IPv4 allocation present in the announced prefixes.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS50338 | GamerHost s.r.o. | 37 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS208790- Registry name
- Stepan-Duda
- Registrant
- Stepan Duda
- Abuse contact
- abuse@duda.fun
- Registered
- 2025-05-09
- Last changed
- 2025-11-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 4 authorising AS208790
- ASPA
- 3 declared providers
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 10 naming AS208790
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: 447 networks and 1,848 prefixes, as published 2026-10-31. 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