asn.dev

Autonomous system

AS43259 LEIDOS-UK

Unclassified RIPE

IPv4 addresses 512 1 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

Leidos Innovations UK

United Kingdom · AI-generated

business defence government corporate

LEIDOS-UK is operated by Leidos Innovations UK LTD.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname UK-LEIDOS-20111010 and registrant Leidos Innovations UK LTD.
  • The AS announces 512 IPv4 addresses within a single prefix (89.145.170.0/23) and maintains only 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic consists of internal corporate communications and services for Leidos, a technology services company providing solutions to government and commercial organisations in the UK, with a focus on defence and intelligence sectors.

Notable

  • The registrant Leidos Innovations UK LTD matches the AS holder and the netname, confirming consistent ownership.
  • Leidos Innovations UK Ltd is a wholly owned subsidiary of Leidos, a global technology leader serving government and commercial customers.
  • The inventory consists of a single /23 block, representing a finely subdivided internal corporate estate.

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
AS2856British Telecommunications Limited118

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 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS43259
Registry name
LEIDOS-UK
Registrant
LEIDOS-UK-MNT
Abuse contact
ripe-abuse@leidos.com
Registered
2017-02-01
Last changed
2019-06-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS43259
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS43259

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: 442 networks and 1,782 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