Hostname
grus.cz
Last fetched
grus.cz resolves to 3 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists registrar:reg-internet-cz as the registrar.
Nutrition Label
Resolution chain
grus.cz resolves to 3 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 104.21.61.50 | 104.21.48.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 172.67.206.123 | 172.67.192.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 217.11.249.141 | 217.11.248.0/23 | AS15685 | — | CZ |
WHOIS identity
- Registrar
- registrar:reg-internet-cz
- Organization
- grapharts grapharts
- Contact emails
- —
Subdomains
11 observed subdomains of grus.cz.
Web-graph footprint
Distinct hostnames that link to or from grus.cz in the public web crawl.
8 sites link to this hostname.
12 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
3 SPF mechanisms authorising senders for grus.cz.
| Mechanism | Target |
|---|---|
| SPF_A | grus.cz |
| SPF_INCLUDE | spf.blueboard.cz |
| SPF_MX | grus.cz |
Related pages
Pivot deeper into the graph from grus.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "grus.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.