Autonomous system
AS50293 INTERFIBER-
Unclassified RIPE
Summary
Interfiber Networks LDA
transit nsp portugal
The AS handle INTERFIBER- is held by Interfiber Networks LDA.
What it's used for
- The address space carries a mix of leased and owned infrastructure, evidenced by netnames
COGENT-EUROPEAN-OPERATIONS-001(Cogent Communications, LLC),UP-COLO, andPT-INTERFIBER-20210422(Interfiber Networks LDA). - With 1,536 IPv4 addresses and 1 IPv6 prefix announced against 119 observed neighbours, the high neighbour-to-address ratio indicates a transit or network service provider role rather than an access network.
- As a Network Service Provider (NSP) based in Portugal, the traffic consists of upstream transit and interconnection for its customer base.
Notable
- Registrants do not uniformly match the announcer; the largest prefix is registered to Cogent Communications, LLC, while the smallest is registered to Interfiber Networks LDA.
- The address inventory is small and fragmented, consisting of three distinct IPv4 prefixes and one IPv6 prefix.
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
Recorded at 6 exchanges in 5 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| LINX LON1 | London, United Kingdom | 195.66.231.53 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.209.199 |
| France-IX Paris | Paris, France | 37.49.238.240 |
| DE-CIX Lisbon | Lisbon, Portugal | 185.1.131.57 |
| Gigabit Portuguese Internet Exchange Point | Lisbon, Portugal | 193.136.250.96 |
| Africa Congo Internet Exchange | Kinshasa, Democratic Republic of Congo | 196.60.92.10 |
Transit providers
21 upstream, 3 downstream and 34 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 · 1.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PT | Portugal | 4 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50293- Registry name
- INTERFIBER-PT
- Registrant
- lir-pt-interfiber-1-MNT
- Abuse contact
- admin.pt@interfiber.net
- Registered
- 2021-04-22
- Last changed
- 2021-06-16
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 4 authorising AS50293
- ASPA
- no ASPA record
- IRR
- 88% registered · 7 of 8 announcements
- Route objects
- 10 naming AS50293
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: 445 networks and 1,817 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