Hostname
fosfa.cz
Last fetched
fosfa.cz resolves to 1 IPv4 address operated by AS13036 in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.
Nutrition Label
Resolution chain
fosfa.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 |
|---|---|---|---|---|
| 195.39.78.134 | 195.39.0.0/17 | AS13036 | — | CZ |
WHOIS identity
- Registrar
- registrar:reg-internet-cz
- Organization
- fosfa, a. s.
- Contact emails
- —
Subdomains
51 observed subdomains of fosfa.cz.
Showing 25 of 51. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from fosfa.cz in the public web crawl.
11 sites link to this hostname.
Threat posture
History
Mail and authentication
MX records
- fosfa.cz
- mx1.fosfa.cz
SPF policy
9 SPF mechanisms authorising senders for fosfa.cz.
| Mechanism | Target |
|---|---|
| SPF_A | mail.alivo.cz |
| SPF_A | om.cz.net |
| SPF_A | silper.cz |
| SPF_A | smtp.gts.cz |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_IP | 195.39.78.132 |
| SPF_IP | 195.39.78.133 |
| SPF_IP | 195.39.78.134 |
| SPF_MX | fosfa.cz |
Related pages
Pivot deeper into the graph from fosfa.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "fosfa.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.