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Hostname

isora.cz

Last fetched

isora.cz resolves to 1 IPv4 address operated by WEB4U - Web4U s.r.o. in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.

Nutrition Label

WHISPER CANON · isora.czRouting diversity1.5/10Peering density3.1/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint8.0/10canon.whisper.security/host/isora.cz

Resolution chain

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

IPPrefixASNOperatorCountry
81.91.85.13481.91.80.0/21AS39790WEB4U - Web4U s.r.o.CZ

WHOIS identity

Registrar
registrar:reg-internet-cz
Organization
milan raiskub
Contact emails
—

Subdomains

2 observed subdomains of isora.cz.

Subdomain
mail.isora.cz
www.isora.cz

Web-graph footprint

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

7 sites link to this hostname.

3 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for isora.cz.

MechanismTarget
SPF_Aisora.cz
SPF_IP81.91.85.134
SPF_IP81.91.85.229
SPF_IP81.91.85.89
SPF_IP81.91.85.94
SPF_MXisora.cz

Related pages

Pivot deeper into the graph from isora.cz.

Cypher and MCP

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

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