asn.dev

Autonomous system

AS49657 TNSI Transaction Network Services (UK) LTD

Unclassified RIPE

IPv4 addresses 768 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Transaction Network Services (UK)

United Kingdom · AI-generated

business financial telecom corporate

TNSI ASN BGP Peering For MPLS is held by Transaction Network Services (UK) LTD.

What it's used for

  • The address space carries corporate infrastructure for a financial and telecommunications services provider, evidenced by netnames TNSUK and TRANSACTION-NETWORK-SERVICES-CGNT-NET-1 and reverse DNS entries like unused64.tnsi.co.uk and unused64.tnsi.com.
  • The AS announces 768 IPv4 addresses across 3 prefixes and maintains 3 observed neighbours, a ratio consistent with an internal corporate estate or private network rather than a public transit or access provider.
  • Traffic from this AS consists of internal data communications and interoperability solutions supporting critical transactions and information exchange for the company's business operations.

Notable

  • Registrants align with the announcer, listing Transaction Network Services (UK) LTD for the UK block and Transaction Network Services, Inc. for the US-registered blocks.
  • The address inventory is small and finely subdivided into three /24 prefixes, reflecting a segmented internal corporate network rather than a large-scale public service.

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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS47009Transaction Network Services, Inc.116
AS6461Zayo Bandwidth73
AS701Verizon Business43

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-07, 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 3 prefixes · 768 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS49657
Registry name
TNSI
Registrant
Transaction Network Services (UK) LTD
Abuse contact
NetworkArchitecturalEngineering@tnsi.com
Registered
2009-07-22
Last changed
2025-10-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS49657
ASPA
no ASPA record
IRR
0% registered · 0 of 4 announcements 3 other origin
Route objects
0 naming AS49657

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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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