Hostname
geis.cz
Last fetched
geis.cz resolves to 2 IPv4 addresses operated by AS25234 in CZ. WHOIS lists registrar:reg-zoner as the registrar.
Nutrition Label
Resolution chain
geis.cz resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 31.15.13.106 | 31.15.8.0/21 | AS25234 | — | CZ |
| 37.9.175.204 | 37.9.175.0/24 | AS51013 | — | SK |
WHOIS identity
- Registrar
- registrar:reg-zoner
- Organization
- geis cz s.r.o.
- Contact emails
Subdomains
19 observed subdomains of geis.cz.
Web-graph footprint
Distinct hostnames that link to or from geis.cz in the public web crawl.
22 sites link to this hostname.
1 site linked to from this hostname.
Sample inbound links
Sample outbound links
Threat posture
History
Mail and authentication
SPF policy
12 SPF mechanisms authorising senders for geis.cz.
| Mechanism | Target |
|---|---|
| SPF_A | mail.geis.cz |
| SPF_A | smtp2.geis.cz |
| SPF_A | smtp3.geis.cz |
| SPF_INCLUDE | mailgun.org |
| SPF_INCLUDE | spf-westeu.emailsignatures365.com |
| SPF_INCLUDE | spf.hornetsecurity.com |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_INCLUDE | spf.smartemailing.cz |
| SPF_IP | 80.188.203.149 |
| SPF_IP | 80.188.203.152 |
| SPF_IP | 80.188.203.153 |
| SPF_MX | geis.cz |
Related pages
Pivot deeper into the graph from geis.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "geis.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.