asn.dev

Autonomous system

AS203385 asczpernix Pernix systems s.r.o.

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 25 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Pernix systems s.r.o.

Czechia · AI-generated

business czech small

The AS handle AS203385 is held by Pernix systems s.r.o.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname CZ-PERNIX-20160129 and registrant Pernix systems s.r.o.
  • The network announces 512 IPv4 addresses and 2 IPv6 prefixes, with only 2 observed neighbours, indicating a small-scale internal or business network rather than a transit or large access provider
  • Traffic from this AS consists of office workers and internal business endpoints for the Czech-based systems company

Notable

  • Registrants agree with the announcer, with Pernix systems s.r.o. listed as the registrant for the primary prefix
  • The address inventory consists of a single IPv4 prefix 185.136.108.0/23 and two IPv6 prefixes 2a06:fb40::/33 and 2a06:fb41::/32, representing a compact corporate estate

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 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS204860NetX Networks a.s.206
AS210604Pernix systems s.r.o.121

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, 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 1 prefixes · 512 addresses IPv6 25 prefixes

CountryNamePrefixes
CZCzechia26

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS203385
Registry name
asczpernix
Registrant
cz-pernix-1-mnt
Abuse contact
zburget@burgnet.cz
Registered
2016-01-29
Last changed
2022-01-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 10 with no ROA
ROAs
0 authorising AS203385
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
14 naming AS203385

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: 449 networks and 1,846 prefixes, as published 2026-11-02. 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