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Hosting & Network
fastr.cz runs on AS47493, with email configured.
- Hosting network
- AS47493AS47493
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 123 other sites on AS47493. Stable here since we started watching (Jul 21, 2026).
DNS Records for fastr.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| fastr.cz | MX | 0 | 20 | d86aca3a9a3c97cc.mx2.emailprofi.seznam.cz |
| fastr.cz | MX | 0 | 10 | d86aca3a9a3c97cc.mx1.emailprofi.seznam.cz |
| fastr.cz | NS | 0 | sns.wm.cz | |
| fastr.cz | NS | 0 | ns.wm.cz | |
| fastr.cz | SOA | 86400 | ns.wm.cz admin.wms.cz 202210031 28800 14400 3600000 86400 | |
| fastr.cz | A | 0 | 77.237.128.138 | |
| www.fastr.cz | CNAME | 0 | kraken.wms.cz | |
| www.fastr.cz | AAAA | 0 | 2a0a:4080:2::e | |
| www.fastr.cz | A | 0 | 77.237.128.138 |
Get alerted the moment fastr.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch fastr.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, DNSSEC, CNAME 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