asn.dev

Autonomous system

AS207173 uk_northrop Northrop Grumman UK Limited

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

Northrop Grumman UK Limited

United Kingdom · AI-generated

business defense corporate

UK_NORTHROP is operated by Northrop Grumman UK Limited.

What it's used for

  • The space carries corporate infrastructure, evidenced by the netname UK-NORTHROP-20160725 and registrant Northrop Grumman UK Limited.
  • The AS announces 512 IPv4 addresses across 1 prefix (185.160.186.0/23) with 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic from this AS consists of office workers and internal systems for Northrop Grumman's UK operations, an aerospace and defense company.

Notable

  • The registrant Northrop Grumman UK Limited matches the AS holder and netname, confirming consistent ownership.
  • The address inventory is a single /23 block, typical for a corporate site or regional office rather than a distributed service network.

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

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS207173
Registry name
uk_northrop
Registrant
Northrop Grumman UK Limited
Abuse contact
SystemsEuroDLNetworkTeam@euro.ngc.com
Registered
2016-08-18
Last changed
2025-08-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS207173
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
4 naming AS207173

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 1,843 prefixes, as published 2026-11-01. 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