DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
open-book.info is hosted on Google Sites, served over Google, with email configured.
- Platform
- Google Sites
- Hosting network
- GoogleAS15169Google
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 366,978 other sites on Google. Stable here since we started watching (Sep 24, 2026).
DNS Records for open-book.info
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| open-book.info | MX | 0 | 10 | mail.open-book.info |
| open-book.info | NS | 0 | ns.isnet.ru | |
| open-book.info | NS | 0 | ns2.isnet.ru | |
| open-book.info | TXT | 0 | v=spf1 redirect=_spf.mesto.biz | |
| open-book.info | TXT | 0 | google-site-verification=rdatz9rdkdiyl1vethcg4tgiebh2wcmnhwj35rfjhdq | |
| open-book.info | TXT | 0 | v=spf1 ip4:85.12.197.79 ip4:85.12.197.30 a a:webmail.mesto.biz mx ~all | |
| open-book.info | SOA | 3600 | ns2.isnet.ru hostmaster.mesto.biz 1706268022 10800 3600 604800 3600 | |
| open-book.info | A | 0 | 216.239.34.21 | |
| open-book.info | A | 0 | 216.239.32.21 | |
| open-book.info | A | 0 | 216.239.36.21 | |
| open-book.info | A | 0 | 216.239.38.21 | |
| www.open-book.info | A | 0 | 142.251.163.121 | |
| www.open-book.info | AAAA | 0 | 2607:f8b0:4004:c1b::79 | |
| www.open-book.info | CNAME | 0 | ghs.google.com |
Get alerted the moment open-book.info's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch open-book.info 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