DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
chrastecky.cz runs on AS197019, with DNS by AWS Route 53 and email via Proton.
- Hosting network
- AS197019AS197019
- Managed DNS
- AWS Route 53
- Proton
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 11,911 other sites on AS197019. Stable here since we started watching (Nov 5, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for chrastecky.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| chrastecky.cz | MX | 0 | 20 | mailsec.protonmail.ch |
| chrastecky.cz | MX | 0 | 10 | mail.protonmail.ch |
| chrastecky.cz | SOA | 86400 | ns-376.awsdns-47.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 | |
| chrastecky.cz | A | 0 | 46.28.110.83 | |
| chrastecky.cz | NS | 0 | ns-376.awsdns-47.com | |
| chrastecky.cz | NS | 0 | ns-1949.awsdns-51.co.uk | |
| chrastecky.cz | NS | 0 | ns-879.awsdns-45.net | |
| chrastecky.cz | NS | 0 | ns-1247.awsdns-27.org | |
| chrastecky.cz | TXT | 0 | v=spf1 mx a include:_spf.google.com include:_spf.protonmail.ch ~all | |
| chrastecky.cz | TXT | 0 | protonmail-verification=c2b41bff3dabbc2f68aee49afe9b8451455e236a | |
| www.chrastecky.cz | A | 0 | 46.28.110.83 |
Get alerted the moment chrastecky.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch chrastecky.cz continuously, notifying you the moment anything moves across all three signals:

Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain