asn.dev

Autonomous system

AS25462 RETN-UA-AS

Unclassified RIPE

IPv4 addresses 3.07K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

RETN Limited

United Kingdom · AI-generated

business uk ipv4

The AS handle RETN-UA-AS is held by RETN Limited.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netnames UA-RETN and UK-RETN-20180710 and the reverse DNS record 87-245-219-255.retn.net.
  • The AS announces 3072 IPv4 addresses across 2 prefixes with 1 observed neighbour, a ratio consistent with a small business or internal corporate estate rather than a transit provider.

Notable

  • Registrants for the announced prefixes are RETN.net Contacts Data and RETN Limited, which align with the registry holder.
  • The inventory consists of two IPv4 blocks: 87.245.216.0/21 and 149.255.128.0/22, with no IPv6 prefixes in inventory.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9002RETN Limited118

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 2 prefixes · 3.07K addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS25462
Registry name
RETN-UA-AS
Registrant
MNT-RETN
Abuse contact
abuse@retn.net
Registered
2002-12-02
Last changed
2025-08-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS25462
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS25462

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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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