Autonomous system
AS15496 Aalto University
Unclassified ARIN
Summary
Aalto University
education research infrastructure
The one name published says which switch the address sits behind, not which address it is.
What it's used for
- A university network. A single IPv4
/16announced from Finland, no IPv6, sixty-five thousand addresses, through one observed BGP neighbour.
Notable
- The one block carries a netname of the institution's name and the country code, and nothing else.
- The single answering address returns a name built from a letter, a three-digit number, and a second number, under a subdomain for organisational hosts.
- Neither number in that name matches any octet of the address it belongs to.
- Sixty-five thousand addresses announced as one route, with no fragments.
- Three addresses were queried for reverse DNS and one returned a name.
Interesting
- A reverse name that encodes a virtual network number and a position within it, rather than the address, is a campus convention. It tells an operator which switched segment the machine is on, which is the question they actually have.
- The trade-off is that the name means nothing to anyone outside. An external observer sees a label with no way to relate it back to the address.
- A block this size held by one university, announced whole with a single upstream, is the shape of a network that connected early and has never needed to change.
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 |
|---|---|---|
| AS1741 | Tieteen tietotekniikan keskus Oy | 60 |
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 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| FI | Finland | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS15496- Registry name
- UNSPECIFIED
- Registrant
- AALTOFI-MNT
- Abuse contact
- hostmaster@aalto.fi
- Registered
- 1970-01-01
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS15496
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS15496
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: 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