Skip to content

Hostname

irstech.cz

Last fetched

irstech.cz resolves to 1 IPv4 address operated by MASTER-AS - MasterDC s.r.o. in CZ. WHOIS lists registrar:reg-gransy as the registrar.

Nutrition Label

WHISPER CANON · irstech.czRouting diversity1.5/10Peering density5.2/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint5.2/10canon.whisper.security/host/irstech.cz

Resolution chain

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

IPPrefixASNOperatorCountry
37.205.12.1537.205.12.0/22AS24971MASTER-AS - MasterDC s.r.o.CZ

WHOIS identity

Registrar
registrar:reg-gransy
Organization
integrated retail solutions s.r.o.
Contact emails
—

Subdomains

4 observed subdomains of irstech.cz.

Subdomain
rds.irstech.cz
remote.irstech.cz
stm.irstech.cz
www.irstech.cz

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for irstech.cz.

MechanismTarget
SPF_INCLUDEspf.emailsignatures365.com
SPF_INCLUDEspf.protection.outlook.com
SPF_IP83.167.243.136

Related pages

Pivot deeper into the graph from irstech.cz.

Cypher and MCP

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

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