asn.dev

Autonomous system

AS47767 RCO-AS

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Regionální centrum Olomouc

Czechia · AI-generated

business conference czechia

RCO-AS is operated by Regionální centrum Olomouc s.r.o.

What it's used for

  • The space carries the corporate network for a conference and administrative facility, as indicated by the netname CZ-RCO-20080806 and the registrant identity.
  • The AS announces 2048 IPv4 addresses in a single /21 prefix and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small, self-contained business network rather than a transit or access provider.
  • Traffic from this AS consists of office workers, conference attendees, and institutional clients using the facility's IT infrastructure for web access, VoIP, and internal services.

Notable

  • The RDAP registrant Regionalni centrum Olomouc s.r.o. matches the AS holder, confirming direct ownership of the address space.
  • The address inventory is compact, consisting of a single contiguous IPv4 block and one IPv6 prefix, typical for a single-site 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 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6855Slovak Telekom, a.s.49
AS39904MERIT GROUP a.s47

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 · 2.05K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS47767
Registry name
RCO-AS
Registrant
Regionalni centrum Olomouc s.r.o.
Abuse contact
info.ripe@rco.cz
Registered
2008-08-15
Last changed
2021-09-02
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS47767
ASPA
2 declared providers
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS47767

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