asn.dev

Autonomous system

AS51812 KTVS-AS KTVS Ltd.

Unclassified RIPE

IPv4 addresses 17.41K 25 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

KTVS Ltd.

Russian Federation · AI-generated

business russia corporate

The AS handle KTVS-AS is held by KTVS Ltd.

What it's used for

  • The address space is primarily registered under the netname KTVS-NET for KTVS Ltd., with two prefixes (92.38.88.0/22 and 95.46.12.0/22) registered to ALFA TELECOM s.r.o. under the netname CZ-ALFATELECOM.
  • The inventory consists of 17408 IPv4 addresses across 25 prefixes, with only 2 observed routing neighbours. This high address-to-neighbour ratio indicates an internal corporate estate or access network rather than a transit provider.
  • Reverse DNS entries for the 46.148.48.0/20 block point to arznet.ru, suggesting the space carries endpoints associated with that domain.

Notable

  • Registrants for the majority of prefixes align with the announcer, KTVS Ltd., while two prefixes are registered to ALFA TELECOM s.r.o., indicating a mix of owned and potentially leased or historically acquired space.
  • The address inventory is fragmented into many small /23 blocks alongside a single /20 and two /22 blocks, consistent with site-by-site segmentation for a 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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS31133PJSC MegaFon1,181
AS20485Joint Stock Company TransTeleCom453

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, 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 25 prefixes · 17.41K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation25

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51812
Registry name
KTVS-AS
Registrant
MNT-KTVS
Abuse contact
admin@arznet.ru
Registered
2010-11-09
Last changed
2026-04-07
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 28 valid, 0 with no ROA
ROAs
29 authorising AS51812
ASPA
no ASPA record
IRR
100% registered · 28 of 28 announcements
Route objects
27 naming AS51812

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 2026-11-04. 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