asn.dev

Autonomous system

AS57850 NWL-AS Northumbrian Water Ltd

Unclassified RIPE

IPv4 addresses 256 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

Northumbrian Water Ltd

United Kingdom · AI-generated

utility corporate water uk

NWL-AS is held by Northumbrian Water Ltd.

What it's used for

  • The space carries corporate infrastructure for a water utility, evidenced by the netname Northumbrian-Water-Ltd and registrant Northumbrian Water Ltd.
  • The AS announces 256 IPv4 addresses within a single /24 prefix (91.209.60.0/24) and maintains 1 observed neighbour, indicating a small, isolated internal network rather than a transit or access provider.
  • Traffic from this AS consists of internal corporate communications, office systems, and operational technology for water supply and sewerage services in Northumberland.

Notable

  • The RDAP registrant Northumbrian Water Ltd matches the AS holder and netname, confirming consistent ownership.
  • The address inventory is minimal, consisting of a single /24 block, which is typical for a private corporate estate rather than a public internet service provider.

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
AS35228Telefonica UK Limited60

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, 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 · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57850
Registry name
NWL-AS
Registrant
AS5089-MNT
Abuse contact
abuse@nwl.co.uk
Registered
2012-02-22
Last changed
2020-08-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS57850
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS57850

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: 449 networks and 1,846 prefixes, as published 2026-11-02. 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