Hostname
o2.cz
Last fetched
o2.cz resolves to 1 IPv4 address operated by AS5610 in CZ. WHOIS lists registrar:reg-ct as the registrar.
Nutrition Label
Resolution chain
o2.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 |
|---|---|---|---|---|
| 160.218.161.162 | 160.218.0.0/16 | AS5610 | — | CZ |
WHOIS identity
- Registrar
- registrar:reg-ct
- Organization
- o2 holdings
- Contact emails
Subdomains
365 observed subdomains of o2.cz.
Showing 25 of 365. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from o2.cz in the public web crawl.
1,246 sites link to this hostname.
143 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
11 SPF mechanisms authorising senders for o2.cz.
| Mechanism | Target |
|---|---|
| SPF_A | aa.iol.cz |
| SPF_INCLUDE | o2.secar.cz |
| SPF_INCLUDE | out.o2.cz |
| SPF_INCLUDE | spf.finforce.cz |
| SPF_INCLUDE | spf.mailforce.cz |
| SPF_INCLUDE | spf.smartemailing.cz |
| SPF_INCLUDE | spfe.targito.com |
| SPF_IP | 194.228.41.112/32 |
| SPF_IP | 194.228.41.114/32 |
| SPF_IP | 74.121.51.138 |
| SPF_IP | 90.176.151.28 |
Related pages
Pivot deeper into the graph from o2.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "o2.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.