DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
tomf.dev runs on AS33387, with DNS by Cloudflare and email via Google Workspace.
- Hosting network
- AS33387AS33387
- Managed DNS
- Cloudflare
- Google Workspace
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 7,451 other sites on AS33387. Stable here since we started watching (Sep 14, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to tomf.dev.
DNS Records for tomf.dev
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| tomf.dev | MX | 0 | 10 | alt3.aspmx.l.google.com |
| tomf.dev | MX | 0 | 5 | alt1.aspmx.l.google.com |
| tomf.dev | MX | 0 | 10 | alt4.aspmx.l.google.com |
| tomf.dev | MX | 0 | 1 | aspmx.l.google.com |
| tomf.dev | MX | 0 | 5 | alt2.aspmx.l.google.com |
| tomf.dev | SOA | 1800 | alice.ns.cloudflare.com dns.cloudflare.com 2416667551 10000 2400 604800 1800 | |
| tomf.dev | TXT | 0 | google-site-verification=Jc2gJgi6zEiHYM_Oo3xz_3O4SUI9q4e94NDVoek-_Sc | |
| tomf.dev | TXT | 0 | v=spf1 include:_spf.google.com include:spf.mailjet.com -all | |
| tomf.dev | A | 0 | 199.168.100.140 | |
| tomf.dev | NS | 0 | alice.ns.cloudflare.com | |
| tomf.dev | NS | 0 | carl.ns.cloudflare.com | |
| www.tomf.dev | NS | 0 | carl.ns.cloudflare.com | |
| www.tomf.dev | NS | 0 | alice.ns.cloudflare.com | |
| www.tomf.dev | A | 0 | 199.168.100.140 | |
| www.tomf.dev | MX | 0 | 10 | alt3.aspmx.l.google.com |
| www.tomf.dev | MX | 0 | 5 | alt1.aspmx.l.google.com |
| www.tomf.dev | MX | 0 | 1 | aspmx.l.google.com |
| www.tomf.dev | MX | 0 | 10 | alt4.aspmx.l.google.com |
| www.tomf.dev | MX | 0 | 5 | alt2.aspmx.l.google.com |
| www.tomf.dev | SOA | 1800 | alice.ns.cloudflare.com dns.cloudflare.com 2416667551 10000 2400 604800 1800 | |
| www.tomf.dev | CNAME | 0 | tomf.dev | |
| www.tomf.dev | TXT | 0 | google-site-verification=Jc2gJgi6zEiHYM_Oo3xz_3O4SUI9q4e94NDVoek-_Sc | |
| www.tomf.dev | TXT | 0 | v=spf1 include:_spf.google.com include:spf.mailjet.com -all |
Get alerted the moment tomf.dev's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch tomf.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
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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.
What's up with DNS →
Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.
Ask about tomf.dev
BetaAnswers use the live DNS records shown on this page. AI-generated — double-check anything important.
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