asn.dev

Autonomous system

AS205544 LEASEWEB-UK-LON-11

Hosting RIPE Content

IPv4 addresses 46.08K 40 prefixes
IPv6 prefixes 44 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

LeaseWeb

Netherlands · AI-generated

hosting dedicated cloud

An Autonomous System of LeaseWeb, a large Netherlands-based IaaS and hosting provider. This block backs LeaseWeb's UK / London footprint.

What it's used for

  • Dedicated servers, bare metal, cloud, and CDN services for a global customer base out of LeaseWeb's data centers.

Notable

  • An IP here identifies LeaseWeb as the host, not the operator of whatever runs on it — could be a legitimate enterprise workload or an abusive rented server.
  • LeaseWeb operates many ASNs across its regional networks (US, NL, DE, APAC, UK).

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

5 upstream, 0 downstream and 9 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS16265LeaseWeb Network B.V.2,100
AS1299Arelion Sweden AB1,438
AS6453TATA COMMUNICATIONS (AMERICA) INC655
AS174Cogent Communications, LLC438
AS3257GTT Communications Inc.81

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 40 prefixes · 46.08K addresses IPv6 44 prefixes

CountryNamePrefixes
GBUnited Kingdom84

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS205544
Registry name
LEASEWEB-UK-LON-11
Registrant
leaseweb-uk-mnt
Abuse contact
abuse@uk.leaseweb.com
Registered
2017-07-26
Last changed
2018-09-04
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
LeaseWeb UK / LON-01
Network type
Content
Scope
Not Disclosed
Traffic ratio
Heavy Outbound
Peering policy
Selective
IRR as-set
AS205544
Website
https://www.leaseweb.com/

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 96 valid, 0 with no ROA
ROAs
103 authorising AS205544
ASPA
no ASPA record
IRR
100% registered · 96 of 96 announcements
Route objects
118 naming AS205544

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

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 1,781 prefixes, as published 2026-10-16. 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

Cross-check