DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
rtfm.guide runs on Cloudflare, with DNS by Cloudflare and email via Google Workspace.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Google Workspace
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 4,560,160 other sites on Cloudflare. Stable here since we started watching (Sep 28, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for rtfm.guide
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| rtfm.guide | SOA | 1800 | chloe.ns.cloudflare.com dns.cloudflare.com 2416697883 10000 2400 604800 1800 | |
| rtfm.guide | MX | 0 | 1 | aspmx.l.google.com |
| rtfm.guide | MX | 0 | 10 | alt3.aspmx.l.google.com |
| rtfm.guide | MX | 0 | 5 | alt1.aspmx.l.google.com |
| rtfm.guide | MX | 0 | 10 | alt4.aspmx.l.google.com |
| rtfm.guide | MX | 0 | 5 | alt2.aspmx.l.google.com |
| rtfm.guide | A | 0 | 104.21.32.100 | |
| rtfm.guide | A | 0 | 172.67.150.192 | |
| rtfm.guide | TXT | 0 | v=spf1 include:_spf.google.com -all | |
| rtfm.guide | TXT | 0 | google-site-verification=hSAxYogpJAtRKleWPNYuKY2jeRk9N2jX_slNOjMNPyE | |
| rtfm.guide | TXT | 0 | atlassian-domain-verification=y3rT0foAdyaU6R345N/H/NWd5Rx8vb6xB9RSV5alt3IjURZCv8LWqqkdi/V67sph | |
| rtfm.guide | TXT | 0 | google-site-verification=Rdm7yvk3J6jxXnTYW65GFsShoaFhDIgXtUCt59ty1aQ | |
| rtfm.guide | NS | 0 | lakas.ns.cloudflare.com | |
| rtfm.guide | NS | 0 | chloe.ns.cloudflare.com | |
| rtfm.guide | AAAA | 0 | 2606:4700:3031::6815:2064 | |
| rtfm.guide | AAAA | 0 | 2606:4700:3037::ac43:96c0 | |
| www.rtfm.guide | AAAA | 0 | 2606:4700:3037::ac43:96c0 | |
| www.rtfm.guide | AAAA | 0 | 2606:4700:3031::6815:2064 | |
| www.rtfm.guide | A | 0 | 172.67.150.192 | |
| www.rtfm.guide | A | 0 | 104.21.32.100 |
Get alerted the moment rtfm.guide's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch rtfm.guide 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