Autonomous system
AS5516 INESC Lisboa, Portugal
Education RIPE
Summary
INESC
education research legacy
INESC is the Instituto de Engenharia de Sistemas e Computadores, a Portuguese research institute in systems and computer engineering, registered in Lisbon on Rua Alves Redol.
What it's used for
- Networking for research staff, laboratories and institute services across the INESC organisation.
- Its upstream is the Portuguese research and academic networking world rather than a commercial carrier, which is what places it firmly in the NREN-attached category.
Notable
- This is an institutional research network. The addresses are used by the institute itself, not sold to customers, so the space behaves like a campus rather than a provider.
- INESC has long been closely tied to Portuguese universities, and its network sits alongside them rather than in front of them.
Interesting
- INESC grew into a family of associated institutes across Portugal (Lisbon, Porto and others) that share a name and a research lineage while running largely independently. The registry entry keeps a single Lisbon anchor.
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 |
|---|---|---|
| AS1930 | Fundacao para a Ciencia e a Tecnologia, I.P. | 496 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 · 66.82K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PT | Portugal | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS5516- Registry name
- INESC
- Registrant
- INESC-MNT
- Abuse contact
- abuse@inesc.pt
- Registered
- 1970-01-01
- Last changed
- 2018-09-04
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 13% valid · 1 valid, 7 with no ROA
- ROAs
- 1 authorising AS5516
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 8 naming AS5516
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: 447 networks and 1,852 prefixes, as published 2026-10-27. 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