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Hosting & Network
cyberbook.dev runs on AS208208, with email configured.
- Hosting network
- AS208208AS208208
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 166 other sites on AS208208. Stable here since we started watching (Sep 27, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to cyberbook.dev.
DNS Records for cyberbook.dev
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| cyberbook.dev | MX | 0 | 10 | mail.cyberbook.no |
| cyberbook.dev | NS | 0 | ns1.cyberbook.no | |
| cyberbook.dev | NS | 0 | ns2.cyberbook.no | |
| cyberbook.dev | A | 0 | 84.252.120.136 | |
| cyberbook.dev | TXT | 0 | v=spf1 mx include:mail.cyberbook.no include:post.kunnskap.no -all | |
| cyberbook.dev | SOA | 3600 | ns1.cyberbook.no abuse.cyberbook.no 2024012906 7200 540 604800 3600 | |
| cyberbook.dev | AAAA | 0 | 2a0c:2500:571:19c:e756:a953:5247:a97f | |
| www.cyberbook.dev | CNAME | 0 | cyberbook.dev | |
| www.cyberbook.dev | A | 0 | 84.252.120.136 | |
| www.cyberbook.dev | MX | 0 | 10 | mail.cyberbook.no |
| www.cyberbook.dev | TXT | 0 | v=spf1 mx include:mail.cyberbook.no include:post.kunnskap.no -all | |
| www.cyberbook.dev | AAAA | 0 | 2a0c:2500:571:19c:e756:a953:5247:a97f | |
| www.cyberbook.dev | SOA | 3600 | ns1.cyberbook.no abuse.cyberbook.no 2024012906 7200 540 604800 3600 | |
| www.cyberbook.dev | NS | 0 | ns1.cyberbook.no | |
| www.cyberbook.dev | NS | 0 | ns2.cyberbook.no |
Get alerted the moment cyberbook.dev's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch cyberbook.dev 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
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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