asn.dev

Autonomous system

AS50128 CNC

Unclassified RIPE

IPv4 addresses 2.05K 4 prefixes
IPv6 prefixes 16 counted as prefixes, not addresses
Countries 1 mostly SK
Exchanges 1 recorded by PCH
Upstreams 4 1 downstream
Flagged prefixes 0 none

Summary

CNC, a.s.

Slovakia · AI-generated

business it slovakia

CNC is the AS handle for CNC, a.s., a Slovak IT services provider.

What it's used for

  • The address space carries corporate IT infrastructure, evidenced by netnames SK-CNCAS-20091118 and CNC-DC-SERVICES associated with the registrant CNC, a.s.
  • The AS announces 2048 IPv4 addresses and 16 IPv6 prefixes, with 12 observed neighbours, indicating a business network with moderate peering rather than a large access or transit provider.
  • Traffic from this AS consists of web and API endpoints, office workers, and internal corporate services, consistent with CNC, a.s.'s business of delivering tailored IT operations and secure solutions.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing CNC, a.s. and CNC ISP role object, while the prefix 194.1.130.0/24 is registered to NAPRI s.r.o.
  • The address inventory is composed of four IPv4 prefixes and ten IPv6 prefixes, with the largest IPv4 block being 109.71.68.0/22.

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
Slovak Internet eXchange BratislavaBratislava, Slovakia192.108.148.72

Transit providers

4 upstream, 1 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS5578SWAN, a.s.129
AS6939Hurricane Electric LLC18
AS3303Swisscom (Schweiz) AG4
AS33891Core-Backbone GmbH2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 4 prefixes · 2.05K addresses IPv6 16 prefixes

CountryNamePrefixes
SKSlovakia20

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS50128
Registry name
CNC
Registrant
CNC-MNT
Abuse contact
abuse@cnc.sk
Registered
2009-11-20
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
33% valid · 1 valid, 2 with no ROA
ROAs
1 authorising AS50128
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS50128

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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