Hostname
bookin.cz
Last fetched
bookin.cz resolves to 1 IPv4 address operated by WEB4U - Web4U s.r.o. in CZ. WHOIS lists registrar:reg-wedos as the registrar.
Nutrition Label
Resolution chain
bookin.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 |
|---|---|---|---|---|
| 81.91.85.150 | 81.91.80.0/21 | AS39790 | WEB4U - Web4U s.r.o. | CZ |
WHOIS identity
- Registrar
- registrar:reg-wedos
- Organization
- bookin agency s.r.o.
- Contact emails
- —
Subdomains
1 observed subdomain of bookin.cz.
| Subdomain |
|---|
| www.bookin.cz |
Web-graph footprint
Distinct hostnames that link to or from bookin.cz in the public web crawl.
7 sites link to this hostname.
4 sites linked to from this hostname.
Sample inbound links
Sample outbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
9 SPF mechanisms authorising senders for bookin.cz.
| Mechanism | Target |
|---|---|
| SPF_A | bookin.cz |
| SPF_INCLUDE | _spf.google.com |
| SPF_IP | 2001:1568:13:0:0:0:0:353 |
| SPF_IP | 2001:1568:91:4:0:0:0:1 |
| SPF_IP | 2001:1568:d:0:0:0:0:296 |
| SPF_IP | 2001:1568:d:0:0:0:0:347 |
| SPF_IP | 81.91.85.141 |
| SPF_IP | 81.91.85.150 |
| SPF_IP | 81.91.91.15 |
Related pages
Pivot deeper into the graph from bookin.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "bookin.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.