asn.dev

Autonomous system

AS203128 NSML

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

Newcastle Strategic Solutions Limited

United Kingdom · AI-generated

business uk savings

NSML is the autonomous system for Newcastle Strategic Solutions Limited.

What it's used for

  • The space carries the corporate network for a UK-based provider of white-label savings management services, as indicated by the registrant NEWCASTLE STRATEGIC SOLUTIONS LIMITED and netname UK-NSML-20180214.
  • The AS announces a single IPv4 prefix, 185.246.48.0/23, comprising 512 addresses, with no IPv6 prefixes.
  • With only one observed neighbour, the network functions as a small, isolated corporate estate rather than a transit or access provider.

Notable

  • The RDAP registrant NEWCASTLE STRATEGIC SOLUTIONS LIMITED matches the registry holder and the AS handle NSML.
  • The address inventory consists of a single contiguous /23 block, typical of a small business or internal corporate 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
AS12703Pulsant (Scotland) Ltd60

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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
AS203128
Registry name
NSML
Registrant
NEWCASTLE STRATEGIC SOLUTIONS LIMITED
Abuse contact
infra@newcastle.co.uk
Registered
2018-04-24
Last changed
2022-02-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS203128
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS203128

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: 448 networks and 1,851 prefixes, as published 2026-10-29. 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