Autonomous system
AS13237 LAMBDANET-AS European Backbone of AS13237
Unclassified ARIN
Summary
euNetworks
transit telecom infrastructure
A netname dated 05052015, with the year last: a fourth date format in one range.
What it's used for
- A pan-European backbone carrier. 531,456 addresses across 138 IPv4 prefixes, 97 IPv6 prefixes, and 2,327 observed BGP neighbours.
Notable
DE-EUN-SUBALLOC-05052015puts the year at the end, unlike every other dated netname here.- Other netnames are
DE-EUNETWORKS-20000609throughDE-EUNETWORKS-20041006, plusNET-SAGEon a /16. - The AS handle is
LAMBDANET-AS European Backbone of AS13237, containing its own AS number. - Three sampled addresses answered
0-64-124-83.dsl.3u.net, a third party's domain.
Interesting
- Eight digits that read year-first everywhere else in this range read day-first here, and only context distinguishes them. Whether
05052015is the fifth of May is unknowable from the string, which is what happens when a free-text field accumulates local conventions. - 2,327 neighbours is the highest count seen across this range by a wide margin, and it is the whole description of the business: this network's product is the number of other networks it reaches.
- A handle that names its own AS number is circular, and it is also the clearest label in the record, because the trading name has changed at least twice and the number never has.
- The reverse names come from a DSL provider's domain, so parts of this backbone carry access traffic under someone else's branding.
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 16 exchanges in 8 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.192.74 |
| LINX LON1 | London, United Kingdom | 195.66.224.99 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.208.212 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.116.247 |
| France-IX Paris | Paris, France | 37.49.237.163 |
| Milan Internet Exchange | Milan, Italy | 217.29.67.159 |
| SwissIX | Zurich, Switzerland | 91.206.52.105 |
| Vienna Internet Exchange | Vienna, Austria | 193.203.0.91 |
Transit providers
38 upstream, 195 downstream and 339 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 137 prefixes · 531K addresses IPv6 96 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 233 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13237- Registry name
- LAMBDANET-AS
- Registrant
- EUNX-MNT
- Abuse contact
- abuse@eunetworks.com
- Registered
- 2002-09-19
- Last changed
- 2025-06-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 88% valid · 44 valid, 6 with no ROA
- ROAs
- 55 authorising AS13237
- ASPA
- no ASPA record
- IRR
- 98% registered · 49 of 50 announcements
- Route objects
- 126 naming AS13237
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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