asn.dev

Autonomous system

AS51586 SERVERZONECZ ServerZone s.r.o.

Unclassified RIPE

IPv4 addresses 1.28K 2 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

ServerZone

Czechia · AI-generated

hosting business it

The AS handle SERVERZONE is held by ServerZone s.r.o.

What it's used for

  • The address space carries hosting and IT infrastructure, evidenced by the netname CZ-SERVERZONE-20170809 and reverse DNS entries like host-0.ip-185-216-221.srw.cz.
  • The network announces 1280 IPv4 addresses and 2 IPv6 prefixes, with only 1 observed neighbour, indicating a small-scale hosting or business network rather than a transit provider.
  • Traffic from this AS consists of web/API endpoints and IT system operations for ServerZone's clients, consistent with its industry classification as IT System Operations and Maintenance.

Notable

  • Registrants for the announced prefixes include ServerZone s.r.o. for 185.216.220.0/22 and New Mind s.r.o. for 212.18.101.0/24, suggesting a mix of owned and potentially leased or partner space.
  • The address inventory is compact, consisting of two IPv4 prefixes and two IPv6 /32 blocks, all located in Czechia.

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

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS42000Futruy s.r.o.192

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 2 prefixes · 1.28K addresses IPv6 2 prefixes

CountryNamePrefixes
CZCzechia4

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51586
Registry name
SERVERZONECZ
Registrant
cz-serverzone-1-mnt
Abuse contact
abuse@serverzone.cz
Registered
2023-01-17
Last changed
2023-01-17
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
4 authorising AS51586
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS51586

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: 447 networks and 1,843 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