asn.dev

Autonomous system

AS8253 DUTHNET-AS

Education RIPE

IPv4 addresses 10.50K 3 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GR
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Democritus University of Thrace

Greece · AI-generated

education university research legacy

DUTHNET-AS is the campus network of the Democritus University of Thrace (Δημοκρίτειο Πανεπιστήμιο Θράκης), a Greek public university with faculties spread across Komotini, Xanthi, Alexandroupoli and Orestiada.

What it's used for

  • Roughly 10,500 addresses across three prefixes, plus an IPv6 /48 from the Greek research network's 2001:648::/32.
  • Reverse DNS is entirely on duth.gr and reads as a campus: wifi-kimmeria.duth.gr (the Kimmeria campus in Xanthi), backbone.xan.rescom.duth.gr (student residences), apolitis.noc.duth.gr and r-mgmt.dragana.duth.gr (the Dragana campus in Alexandroupoli).
  • Campus Wi-Fi, lab and office machines, university servers, and student halls of residence.

Notable

  • Institutional space, not consumer space. Addresses here belong to university sites; the student-residence blocks are the closest thing to eyeball traffic and are still university-run.
  • The AS is single-homed to the Greek NREN, the usual shape for a university that takes its transit from the national research network rather than from a commercial ISP.

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

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS5408National Infrastructures for Research and Technology S.A.220

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, 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 3 prefixes · 10.50K addresses IPv6 1 prefixes

CountryNamePrefixes
GRGreece4

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS8253
Registry name
DUTHNET-AS
Registrant
AS8253-MNT
Abuse contact
noc@duth.gr
Registered
1970-01-01
Last changed
2017-11-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
4 authorising AS8253
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
12 naming AS8253

Reputation

Classification and threat

Education University, school or national research and education network.

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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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