Autonomous system
AS3323 NTUA
Education RIPE
Summary
National Technical University of Athens (NTUA)
education research legacy
NTUA is the network of the National Technical University of Athens, Greece's oldest and best-known engineering university.
What it's used for
- Campus networking across NTUA's Zografou and central Athens sites: labs, lecture halls, student residences, and administration.
- Research computing and connectivity to the Greek research and education network, which in turn links NTUA to the European academic backbone.
Notable
- The registration covers a legacy /16 — around 65,000 IPv4 addresses — the kind of block universities received when address space was plentiful.
- Traffic here is institutional: a large share of it is students, staff and research systems rather than residential subscribers.
Interesting
- NTUA has long been a hub of Greek internet engineering, and its early allocation puts it among the first Greek organisations visible in the global routing table.
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 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS5408 | National Infrastructures for Research and Technology S.A. | 96 |
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
IPv4 1 prefixes · 65.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GR | Greece | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS3323- Registry name
- NTUA
- Registrant
- NTUA-NOC
- Abuse contact
- abuse@ntua.gr
- Registered
- 1970-01-01
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 50% valid · 1 valid, 1 with no ROA
- ROAs
- 2 authorising AS3323
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 4 naming AS3323
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