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Hostname

kalkulator.cz

Last fetched

kalkulator.cz resolves to 1 IPv4 address operated by Dragon - Dragon Internet a.s. in CZ. WHOIS lists registrar:reg-zoner as the registrar.

Nutrition Label

WHISPER CANON · kalkulator.czRouting diversity1.5/10Peering density3.1/10MOAS conflict✓ noneThreat-feed listings8.0/10WHOIS transparency3.3/10Resolver footprint4.0/10canon.whisper.security/host/kalkulator.cz

Resolution chain

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

IPPrefixASNOperatorCountry
213.168.189.25213.168.176.0/20AS15614Dragon - Dragon Internet a.s.CZ

WHOIS identity

Registrar
registrar:reg-zoner
Organization
kalkulator.cz s.r.o.
Contact emails
—

Subdomains

2 observed subdomains of kalkulator.cz.

Subdomain
me.kalkulator.cz
www.kalkulator.cz

Web-graph footprint

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

221 sites link to this hostname.

400 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for kalkulator.cz.

MechanismTarget
SPF_INCLUDE_spf.google.com
SPF_INCLUDEsendgrid.net
SPF_INCLUDEspf.mandrillapp.com

Related pages

Pivot deeper into the graph from kalkulator.cz.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "kalkulator.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.