asn.dev

Autonomous system

AS51843 TATA-HU-AS

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly HU
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Tata Consultancy Services Hungary

Hungary · AI-generated

business corporate it-services

The AS handle TATA-HU-AS is held by Tata Consultancy Services Limited Magyarorszagi Fioktelepe.

What it's used for

  • The address space carries corporate IT infrastructure, evidenced by the netname TATA-HU and the registrant Magyar Telekom RIPE Administrator.
  • The AS announces 512 IPv4 addresses within a single prefix (91.120.250.0/23) and maintains 2 observed neighbours, a ratio consistent with a small, self-contained corporate estate rather than a transit or access network.
  • Traffic from this AS consists of office workers and internal systems for TCS Hungary, an IT services and consulting firm operating in Budapest.

Notable

  • The registrant Magyar Telekom RIPE Administrator differs from the AS holder, indicating the address space is leased from Magyar Telekom.
  • The address inventory is compact, consisting of a single /23 block, which aligns with the needs of a specific corporate office location.

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
AS12301One Hungary Ltd.118

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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
HUHungary1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51843
Registry name
TATA-HU-AS
Registrant
MTELEKOM-MNT
Abuse contact
abuse@telekom.hu
Registered
2010-11-15
Last changed
2021-10-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS51843
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS51843

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: 442 networks and 1,782 prefixes, as published 2026-10-16. 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