Hostname

r2s.cz

Last fetched Mon, 27 Jul 2026 11:18:00 GMT

r2s.cz resolves to 1 IPv4 address operated by AS24971 in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.

Nutrition Label

Resolution chain

r2s.cz resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
83.167.252.166	83.167.224.0/19	AS24971	—	CZ

WHOIS identity

Registrar: registrar:reg-internet-cz
Organization: miom, s.r.o.
Contact emails: —

Subdomains

4 observed subdomains of r2s.cz.

Subdomain
eshop.r2s.cz
mail-1.r2s.cz
r2sweb-cz-01.r2s.cz
www.r2s.cz

Web-graph footprint

Distinct hostnames that link to or from r2s.cz in the public web crawl.

45 sites link to this hostname.

53 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mail-1.r2s.cz

SPF policy

3 SPF mechanisms authorising senders for r2s.cz.

Mechanism	Target
SPF_IP	2a01:430:26e:0:0:0:0:2
SPF_IP	83.167.252.166
SPF_MX	r2s.cz

Pivot deeper into the graph from r2s.cz.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

MATCH (h:HOSTNAME {name: "r2s.cz"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
      -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.