asn.dev

Autonomous system

AS205132 BTC-SEC-AS

Unclassified RIPE

IPv4 addresses 2.82K 10 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BG
Exchanges 0 recorded by PCH
Upstreams 2 24 downstream
Flagged prefixes 0 none

Summary

Vivacom

Bulgaria · AI-generated

telecom residential mobile business

BTC-SEC-AS is operated by Vivacom Bulgaria EAD.

What it's used for

  • The address space carries residential and business connectivity, evidenced by netnames such as Bulgarian-Telecommunications-Company-Broadband and BG-BTC-20040810, alongside specific infrastructure segments like DDOS-Voxility_LAN3 and CEZ-Electro.
  • With 2,816 IPv4 addresses across 10 prefixes and 25 observed neighbours, the inventory supports a large access network rather than a transit provider.
  • Traffic from this AS consists of subscriber eyeballs for mobile and fixed-line broadband users, as well as endpoints for corporate and government clients served by the operator.

Notable

  • Registrants consistently identify BTC IP ADDRESS SPACE administration and Vivacom Bulgaria EAD, aligning with the AS holder.
  • Vivacom is the rebranded name of the former Bulgarian Telecommunications Company (BTC), which has operated as a major telecom provider in Bulgaria since the early 2000s.
  • The inventory is composed of multiple /24 blocks and a single /23, reflecting a fragmented but substantial address estate typical of a legacy national carrier.

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, 24 downstream and 26 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3223Voxility LLP547
AS8866Vivacom Bulgaria EAD113

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 10 prefixes · 2.82K addresses IPv6 0 prefixes

CountryNamePrefixes
BGBulgaria10

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS205132
Registry name
BTC-SEC-AS
Registrant
BT95-ADM
Abuse contact
abuse-ip@vivacom.bg
Registered
2017-11-03
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 11 valid, 0 with no ROA
ROAs
22 authorising AS205132
ASPA
no ASPA record
IRR
100% registered · 11 of 11 announcements
Route objects
13 naming AS205132

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