asn.dev

Autonomous system

AS207900 UK_NORTHROP_2

Unclassified APNIC

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

Northrop Grumman UK Limited

United Kingdom · AI-generated

business defense corporate internal

UK_NORTHROP_2 is held by Northrop Grumman UK Limited.

What it's used for

  • The space carries corporate infrastructure for the UK arm of the aerospace and defense company, identified by the netname UK-NORTHROP-20160725 and registrant Northrop Grumman UK Limited.
  • The AS announces 512 IPv4 addresses within a single prefix (185.160.184.0/23) and has 0 IPv6 prefixes. With only 1 observed neighbour, this indicates a small, isolated internal estate rather than a transit or access network.
  • Traffic from this AS consists of internal corporate communications, office workers, and web/API endpoints for the defense contractor's UK operations.

Notable

  • The registrant Northrop Grumman UK Limited agrees with the announcer, confirming the space is owned by the organization itself.
  • The address inventory is a single /23 block, representing a finely subdivided internal corporate estate typical of large enterprises managing site-by-site segmentation.

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
AS5089Virgin Media Limited122

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS207900
Registry name
uk_northrop_2
Registrant
Northrop Grumman UK Limited
Abuse contact
SystemsEuroDLNetworkTeam@euro.ngc.com
Registered
2019-11-06
Last changed
2025-08-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS207900
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
4 naming AS207900

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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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