asn.dev

Autonomous system

AS12796 TCV-AS

Residential RIPE

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

Summary

Cifrova Kabelna Korporacia (TCV)

Bulgaria · AI-generated

isp telecom business

A cable operator's four blocks, one of them registered to a company with a different name.

What it's used for

  • A Bulgarian cable and internet operator. 13,056 addresses across four IPv4 prefixes, three observed BGP neighbours, and no IPv6 announced.

Notable

  • Everything sits in 94.190: a /19, a /20, a /23 and a /24.
  • Netnames vary by block: TCV, BG-CCC-20080826, and INTERBILD registered to Telecommunication Company Varna EAD.
  • The RDAP lookup for 94.190.192.0/23 failed.
  • Reverse names put the last octet first: 94.190.183.254 answers as ip-254-183.tcv.bg.

Interesting

  • The reverse names are built backwards, last octet then third, which is the order in-addr.arpa uses rather than the order humans write. A zone generated straight from the delegation comes out this way; one written from a list of addresses does not. It is a reliable tell for how the DNS was produced.
  • Three names for what is evidently one operator — the AS handle, the cable corporation, and a telecom company named for the city of Varna — is the residue of a regional cable business assembled from smaller ones. The registry keeps whichever entity signed for each block.
  • 13,056 addresses against three neighbours is an access network, and the mixture of block sizes says it grew in uneven steps: a /19 when subscribers arrived in bulk, then a /23 and a /24 topping it up.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
T-CIXSofia, Bulgaria185.1.40.29

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS51582Cifrova Kabelna Korporacia EOOD10

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, 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 0 prefixes · 0 addresses IPv6 0 prefixes

This network announces no prefixes we can see.

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS12796
Registry name
TCV-AS
Registrant
DCC-MNT
Abuse contact
admin@dcc.bg
Registered
2008-08-26
Last changed
2025-10-10
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 6 valid, 0 with no ROA
ROAs
9 authorising AS12796
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
58 naming AS12796

Reputation

Classification and threat

Residential Fixed-line consumer ISP. Addresses here are homes.

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 1,778 prefixes, as published 2026-10-20. 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