Hostname
osa.cz
Last fetched
osa.cz resolves to 1 IPv4 address operated by AS25234 in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.
Nutrition Label
Resolution chain
osa.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 |
|---|---|---|---|---|
| 31.15.12.214 | 31.15.8.0/21 | AS25234 | — | CZ |
WHOIS identity
- Registrar
- registrar:reg-internet-cz
- Organization
- osa - ochranny svaz autorsky pro prava k dilum hudebnim, o.s.
- Contact emails
Subdomains
25 observed subdomains of osa.cz.
Showing 23 of 25. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from osa.cz in the public web crawl.
553 sites link to this hostname.
65 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
4 SPF mechanisms authorising senders for osa.cz.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_IP | 2a02:a40:100:4ff::1:1/124 |
| SPF_IP | 85.207.59.176/28 |
| SPF_MX | osa.cz |
Related pages
Pivot deeper into the graph from osa.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "osa.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.