Hostname
fruko.cz
Last fetched
fruko.cz resolves to 1 IPv4 address operated by AS39790 in CZ. WHOIS lists registrar:reg-web4u as the registrar.
Nutrition Label
Resolution chain
fruko.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 |
|---|---|---|---|---|
| 81.91.86.14 | 81.91.80.0/21 | AS39790 | — | CZ |
WHOIS identity
- Registrar
- registrar:reg-web4u
- Organization
- fruko-schulz spol. s r.o.
- Contact emails
- —
Subdomains
14 observed subdomains of fruko.cz.
Web-graph footprint
Distinct hostnames that link to or from fruko.cz in the public web crawl.
40 sites link to this hostname.
1 site 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 fruko.cz.
| Mechanism | Target |
|---|---|
| SPF_A | debian.fruko.cz |
| SPF_A | mail.fruko.cz |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_INCLUDE | spf.smartemailing.cz |
| SPF_IP | 178.23.216.216 |
| SPF_MX | fruko.cz |
Related pages
Pivot deeper into the graph from fruko.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "fruko.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 20Or query Whisper from your own LLM workflow via the Whisper MCP server.