asn.dev

Autonomous system

AS210754 NPP_Kozloduy Kozloduy NPP Plc

Unclassified RIPE

IPv4 addresses 768 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BG
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Kozloduy NPP Plc

Bulgaria · AI-generated

nuclear industrial corporate

The AS handle NPP_KOZLODUY is held by Kozloduy NPP Plc.

What it's used for

  • The address space carries internal corporate infrastructure, evidenced by the netname BG-NPPKOZLODUY-20080827 and registrant Kozloduy NPP Plc.
  • The inventory consists of 768 IPv4 addresses across 2 prefixes, with 2 observed routing neighbours, indicating a small, isolated internal network rather than a transit or access provider.
  • Traffic from this AS represents internal operations for the Kozloduy Nuclear Power Plant, including administrative, control, and site-specific systems.

Notable

  • Registrants align with the announcer, with Kozloduy NPP Plc listed for the larger prefix and NPP_Kozloduy for the smaller one.
  • The address inventory is finely subdivided into two distinct blocks, consistent with site-by-site segmentation for a single corporate entity.

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
AS205132Vivacom Bulgaria EAD67
AS8262Evolink EAD51

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-06, 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 2 prefixes · 768 addresses IPv6 0 prefixes

CountryNamePrefixes
BGBulgaria2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS210754
Registry name
NPP_Kozloduy
Registrant
lir-bg-nppkozloduy-1-MNT
Abuse contact
abuse@npp.bg
Registered
2021-09-16
Last changed
2025-03-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS210754
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS210754

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 1,854 prefixes, as published 2026-11-06. 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