Hostname
ptacek.cz
Last fetched
ptacek.cz resolves to 1 IPv4 address operated by MASTER-AS - MasterDC s.r.o. in CZ. WHOIS lists registrar:reg-zoner as the registrar.
Nutrition Label
Resolution chain
ptacek.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 |
|---|---|---|---|---|
| 194.145.180.225 | 194.146.219.0/24 | AS24971 | MASTER-AS - MasterDC s.r.o. | CZ |
WHOIS identity
- Registrar
- registrar:reg-zoner
- Organization
- ptacek-velkoobchod, a.s.
- Contact emails
Subdomains
24 observed subdomains of ptacek.cz.
Showing 19 of 24. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from ptacek.cz in the public web crawl.
161 sites link to this hostname.
48 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
10 SPF mechanisms authorising senders for ptacek.cz.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | spf-zoner-zmail.zoner.com |
| SPF_INCLUDE | spf.boldem.cz |
| SPF_INCLUDE | spf.mail-komplet.cz |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_IP | 149.62.147.21 |
| SPF_IP | 185.66.36.2 |
| SPF_IP | 194.145.180.225 |
| SPF_IP | 194.228.86.171 |
| SPF_IP | 93.185.100.227 |
| SPF_MX | ptacek.cz |
Related pages
Pivot deeper into the graph from ptacek.cz.
- IP · 194.145.180.225
- ASN · AS24971MASTER-AS - MasterDC s.r.o.
- Registrar · registrar:reg-zoner
- Country · CZ
- Email · domeny@ptacek.cz
- TLD · .cz
- Browse hostnames · pt…
- Glossary · What is a hostname?
- Whisper Internet Directory — home
- Live MOAS conflicts feed
- Threat feed · Spamhaus DROP
- United States internet infrastructure
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "ptacek.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.