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Hosting & Network
tetanet.cz runs on AS50698, with email via Google Workspace.
- Hosting network
- AS50698AS50698
- Managed DNS
- Self-hosted / other
- Google Workspace
- IPv6 (AAAA)
- Enabled
- CAA pinning
- Set
Sits alongside 33 other sites on AS50698. Stable here since we started watching (Jul 23, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to tetanet.cz.
DNS Records for tetanet.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| tetanet.cz | A | 0 | 109.202.72.17 | |
| tetanet.cz | MX | 0 | 5 | alt1.aspmx.l.google.com |
| tetanet.cz | MX | 0 | 5 | alt2.aspmx.l.google.com |
| tetanet.cz | MX | 0 | 10 | alt4.aspmx.l.google.com |
| tetanet.cz | MX | 0 | 1 | aspmx.l.google.com |
| tetanet.cz | MX | 0 | 10 | alt3.aspmx.l.google.com |
| tetanet.cz | NS | 0 | dnsa3.tetanet.cz | |
| tetanet.cz | NS | 0 | dnsa1.tetanet.cz | |
| tetanet.cz | NS | 0 | dnsa2.tetanet.cz | |
| tetanet.cz | SOA | 3600 | dnsa1.tetanet.cz hostmaster.tetanet.cz 2022081356 28800 7200 1209600 3600 | |
| tetanet.cz | CAA | 0 | 0 iodef mailto:caa@tetanet.cz | |
| tetanet.cz | CAA | 0 | 0 issue letsencrypt.org | |
| tetanet.cz | TXT | 0 | v=spf1 a:services1.tetanet.cz a:services2.tetanet.cz a:web2.tetanet.cz a:external-smtp.tetanet.cz include:_spf.google.com ~all | |
| tetanet.cz | TXT | 0 | google-site-verification=8A39xatQPW1PXcD1DVD_GWa0qxkAiwMv7hhikmFLgh0 | |
| tetanet.cz | AAAA | 0 | 2a06:4401:0:1003:109:202:72:17 | |
| www.tetanet.cz | CAA | 0 | 0 issue letsencrypt.org | |
| www.tetanet.cz | CAA | 0 | 0 iodef mailto:caa@tetanet.cz | |
| www.tetanet.cz | TXT | 0 | v=spf1 a:services1.tetanet.cz a:services2.tetanet.cz a:web2.tetanet.cz a:external-smtp.tetanet.cz include:_spf.google.com ~all | |
| www.tetanet.cz | TXT | 0 | google-site-verification=8A39xatQPW1PXcD1DVD_GWa0qxkAiwMv7hhikmFLgh0 | |
| www.tetanet.cz | MX | 0 | 10 | alt3.aspmx.l.google.com |
| www.tetanet.cz | MX | 0 | 5 | alt1.aspmx.l.google.com |
| www.tetanet.cz | MX | 0 | 5 | alt2.aspmx.l.google.com |
| www.tetanet.cz | MX | 0 | 1 | aspmx.l.google.com |
| www.tetanet.cz | MX | 0 | 10 | alt4.aspmx.l.google.com |
| www.tetanet.cz | NS | 0 | dnsa3.tetanet.cz | |
| www.tetanet.cz | NS | 0 | dnsa1.tetanet.cz | |
| www.tetanet.cz | NS | 0 | dnsa2.tetanet.cz | |
| www.tetanet.cz | CNAME | 0 | tetanet.cz | |
| www.tetanet.cz | A | 0 | 109.202.72.17 | |
| www.tetanet.cz | SOA | 3600 | dnsa1.tetanet.cz hostmaster.tetanet.cz 2022081356 28800 7200 1209600 3600 | |
| www.tetanet.cz | AAAA | 0 | 2a06:4401:0:1003:109:202:72:17 |
Get alerted the moment tetanet.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch tetanet.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