Hostname

cals.cz

Last fetched Fri, 14 Aug 2026 13:37:56 GMT

cals.cz resolves to 1 IPv4 address operated by WEB4CE - Web4ce, s.r.o. in CZ. WHOIS lists registrar:reg-webglobe as the registrar.

Nutrition Label

Resolution chain

cals.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
93.190.52.189	93.190.48.0/21	AS47317	WEB4CE - Web4ce, s.r.o.	CZ

WHOIS identity

Registrar: registrar:reg-webglobe
Organization: cals servis s.r.o.
Contact emails: —

Subdomains

3 observed subdomains of cals.cz.

Subdomain
new.cals.cz
webmail.cals.cz
www.cals.cz

Web-graph footprint

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

19 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

mailgw.pragodata.com

SPF policy

2 SPF mechanisms authorising senders for cals.cz.

Mechanism	Target
SPF_INCLUDE	_spf.ignum.cz
SPF_IP	93.190.52.189

Pivot deeper into the graph from cals.cz.

Cypher and MCP

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

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