DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
book1one.com runs on Cloudflare, with email via Microsoft 365.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,994,654 other sites on Cloudflare. Stable here since we started watching (Oct 13, 2026).
DNS Records for book1one.com
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| book1one.com | A | 0 | 162.159.140.127 | |
| book1one.com | TXT | 0 | mscid=wh5V0FK7qf7QnuhzniV8auitHPCYZshc0zQleSGAE3gzps4DqgDa9/n5mjG3ki75psgOeBbN4svXhCcQr62VBA== | |
| book1one.com | TXT | 0 | google-site-verification=lvcjTdnue1io-7vgGfs37Fy1A1tuGRINJBjcBqQK-ME | |
| book1one.com | TXT | 0 | v=spf1 include:spf.protection.outlook.com -all | |
| book1one.com | SOA | 300 | ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300 | |
| book1one.com | MX | 0 | book1one-com.mail.protection.outlook.com | |
| book1one.com | NS | 0 | ns4.bdm.microsoftonline.com | |
| book1one.com | NS | 0 | ns3.bdm.microsoftonline.com | |
| book1one.com | NS | 0 | ns1.bdm.microsoftonline.com | |
| book1one.com | NS | 0 | ns2.bdm.microsoftonline.com | |
| www.book1one.com | CNAME | 0 | dns.umbraco.io | |
| www.book1one.com | A | 0 | 172.66.0.125 | |
| www.book1one.com | A | 0 | 162.159.140.127 | |
| www.book1one.com | AAAA | 0 | 2a06:98c1:58::7d | |
| www.book1one.com | AAAA | 0 | 2606:4700:7::7d |
Get alerted the moment book1one.com's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch book1one.com 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