Domain health platform
Every site you run — its DNS, email, certificates, uptime and WordPress — monitored in one place, with an alert and the exact fix the moment something breaks.
227,000+ checks run since August 2026
Every check runs from Frankfurt, New York and Singapore, so one unreachable route never reads as an outage.
The 90-second tour
Every website runs on more than it shows: a domain, DNS, email, a certificate — often WordPress. When one layer breaks, everything does.
DNS Toolbox watches every layer — and manages WordPress too.
Start with a free check. One domain, one report, in under a minute — every problem scored, with the evidence and the exact fix.
Then it keeps watching. A DNS record changes? You see the old value, the new one, and when. Domains, certificates and propagation — all tracked.
For email: every sender named from your DMARC reports, SPF kept under ten lookups, test messages that show what inboxes see, and an alert the day you land on a blocklist.
Uptime is checked from three continents, so every outage is confirmed. Plus page speed, and the errors your visitors’ browsers hit.
WordPress updates run in each site’s quiet hour — with a snapshot first, and an automatic rollback if anything breaks. Daily backups, restores, and vulnerability warnings.
Alerts on Slack, Teams, email or PagerDuty. Automations for the next step. A workspace for every client, your team invited, and reports with your logo.
Plus 25 free tools. DNS Toolbox — start free with three domains.
Replaces six separate tools
Most outages don’t start on the server. They start with an expired domain, a changed DNS record, a broken SPF record or a certificate nobody renewed. DNS Toolbox monitors all of it, for every domain you manage.
01 Domain & DNS
Every record, nameserver, DNSSEC chain, registration and certificate, checked on a schedule and compared with the last check: old value → new value.
02 Email
See every service sending as your domain from its DMARC reports, fix the ones that fail, and move to p=reject without losing real mail. Gmail, Yahoo and Microsoft now require SPF, DKIM and DMARC from bulk senders; see where each domain stands.
03 WordPress
Each site updates in its own quiet hour, with a snapshot first and an automatic rollback if the site stops answering. Backups run daily, off-site.
Change monitoring
When a record moves, a mail policy loosens or a certificate fails to renew, you get the old value, the new value and the minute it happened — before your visitors, or your clients, notice.
Evidence turns “something’s wrong” into “here’s the fix”.
Show the work
A report that shows clients what they pay you for: what’s healthy, what changed, and what comes next.
Scheduled reports from Personal; reports without our name on Agency.
Never per seat
Three domains free, for good. As your list of sites grows, you pay only for the domains we monitor.
For trying things out
For your own sites
For freelancers & small teams
For agencies managing many clients
A bigger portfolio? Talk to us about EnterpriseCompare every plan
Good questions
The questions we hear most.
No. The domain scan and all 25 free tools work without signing up. Create a free account when you want to save domains and get alerts.
Scans and monitoring only read. WordPress updates, backups and care routines run only after you connect a site and switch them on.
Uptime is one part of it. DNS Toolbox also monitors DNS and domain changes, email authentication, certificates, WordPress, speed, security headers and the errors visitors’ browsers report.
Yes — it is built for that: a workspace per client, reports in your colours, team access, alerts and automations. See how agencies use it; the pricing page shows what each plan includes.
Checked from three continents
A free report on its DNS, email authentication, SSL, security and WordPress. Add three domains free and we’ll keep monitoring them.
3 domains free forever · No credit card
