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Hosting & Network
ptas.cz runs on AS15685, with DNS by AWS Route 53 and email via Google Workspace.
- Hosting network
- AS15685AS15685
- Managed DNS
- AWS Route 53
- Google Workspace
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on AS15685. Stable here since we started watching (Aug 13, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to www.ptas.cz.addr.cz.
DNS Records for ptas.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| ptas.cz | NS | 0 | ns-588.awsdns-09.net | |
| ptas.cz | NS | 0 | ns-2029.awsdns-61.co.uk | |
| ptas.cz | NS | 0 | ns-155.awsdns-19.com | |
| ptas.cz | NS | 0 | ns-1331.awsdns-38.org | |
| ptas.cz | TXT | 0 | google-site-verification=z7grE7Bb21nQk7NWIE0LwpWifL0-L27bi_bnK6TDCVw | |
| ptas.cz | TXT | 0 | google-site-verification=JeuKZBEHtGCFlsMugnnvy1w76CjuJ_VLix_mWAiYALM | |
| ptas.cz | TXT | 0 | v=spf1 include:spf.protection.outlook.com a:hybrid.ptas.cz a:mail.ptas.cz IP4:81.0.214.204/31 include:_spf.google.com include:spf.vizus.cz -all | |
| ptas.cz | TXT | 0 | IWPXpB4qzFgvfdy6yMA10LRDPtoy6BeHQOn3CaJP2Q3kHyZ8lMky1OS1vturvzZQjwvoLvXX2CRvfWUW8VgLgQ== | |
| ptas.cz | MX | 0 | 10 | alt3.aspmx.l.google.com |
| ptas.cz | MX | 0 | 5 | alt2.aspmx.l.google.com |
| ptas.cz | MX | 0 | 1 | aspmx.l.google.com |
| ptas.cz | MX | 0 | 10 | alt4.aspmx.l.google.com |
| ptas.cz | MX | 0 | 5 | alt1.aspmx.l.google.com |
| ptas.cz | A | 0 | 82.208.6.23 | |
| ptas.cz | SOA | 86400 | ns-2029.awsdns-61.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 | |
| www.ptas.cz | CNAME | 0 | www.ptas.cz.addr.cz | |
| www.ptas.cz | A | 0 | 82.208.6.23 |
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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