Autonomous system
AS15690 NOANET
Unclassified RIPE
Summary
NOANET
research education business
Every answering name says what the host is for, department subdomain included.
What it's used for
- A national observatory's network. Three IPv4 prefixes and one IPv6 prefix announced from Greece, one thousand two hundred and eighty addresses, through a single observed BGP neighbour.
Notable
- The four answering names each sit under a different department: one for geodynamics, one for meteorology, one for astronomy and one for administration, all under the observatory's domain.
- The host part of each name is its function rather than an identifier: a broadcast address, a private gateway, an external network for one institute, and a reserve virtual private network endpoint.
- All three IPv4 blocks share one netname and one registrant, a network operations contact, with no abuse role listed at all.
- The IPv6 announcement is a
/48, one block rather than an allocation to divide. - Nine addresses were queried and four returned a name.
- One neighbour carries everything.
Interesting
- Function names in public DNS are a map. A reader learns which address is a gateway, which is a remote access endpoint and which department each belongs to, before sending a single packet at any of them. Research networks have published names this way since long before that mattered.
- One upstream for a national research institute is the shape of a network connected through a single academic backbone rather than bought from the market.
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. | 282 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 1.28K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GR | Greece | 4 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15690- Registry name
- NOANET
- Registrant
- NOANET-MNT
- Abuse contact
- abuse@noa.gr
- Registered
- 1970-01-01
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 5 valid, 0 with no ROA
- ROAs
- 4 authorising AS15690
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 6 naming AS15690
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 1,779 prefixes, as published 2026-10-23. 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