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Hosting & Network
grisoft.cz runs on AS16733 (multi-homed across 2 networks), with DNS by Akamai and email via Microsoft 365.
- Managed DNS
- Akamai
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 36 other sites on AS16733. Stable here since we started watching (Jul 24, 2026).
DNS Records for grisoft.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| grisoft.cz | MX | 0 | grisoft-cz.mail.protection.outlook.com | |
| grisoft.cz | NS | 0 | a20-66.akam.net | |
| grisoft.cz | NS | 0 | a1-182.akam.net | |
| grisoft.cz | NS | 0 | a6-67.akam.net | |
| grisoft.cz | NS | 0 | a26-67.akam.net | |
| grisoft.cz | NS | 0 | a13-65.akam.net | |
| grisoft.cz | NS | 0 | a11-66.akam.net | |
| grisoft.cz | A | 0 | 69.94.75.39 | |
| grisoft.cz | A | 0 | 166.98.243.13 | |
| grisoft.cz | SOA | 172800 | ns.grisoft.cz spravce.grisoft.cz 2024102353 86400 21600 1209600 172800 | |
| grisoft.cz | TXT | 0 | MS=ms99752445 | |
| grisoft.cz | TXT | 0 | v=spf1 ip4:195.39.104.64/26 ip4:193.85.188.248/29 ip4:160.218.43.220/32 ip4:212.96.161.224/27 ip4:87.248.200.96/28 ip4:93.184.217.0/27 ip4:93.184.211.16/28 ip4:10.232.176.0/27 ip4:193.85.156.215 ip4:193.85.156.216 include:_spf.google.com include:spf.protection.outlook.com ~all | |
| grisoft.cz | TXT | 0 | MS=ms48901409 | |
| grisoft.cz | TXT | 0 | google-site-verification=666acBZ9ry2SW0g4cSDMK9CF8x4n_LzGQdlYCpjNv98 | |
| www.grisoft.cz | CNAME | 0 | redman.avast.com.edgesuite.net | |
| www.grisoft.cz | A | 0 | 23.54.127.122 | |
| www.grisoft.cz | A | 0 | 23.54.127.117 | |
| www.grisoft.cz | AAAA | 0 | 2600:1408:ec00:36::1736:7f2c | |
| www.grisoft.cz | AAAA | 0 | 2600:1408:ec00:36::1736:7f31 |
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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