The 3am alert you can trust.
We check your sites, API servers, mail servers, name servers, cron jobs, sockets and SSL/TLS certificates, and confirm every failure from two other continents before we contact anyone.
Five monitors free, checked every five minutes, for as long as you like and without a credit card.
No credit card. Free forever for personal projects.
Our own checks
ExampleThe same five checks we run on ourselves, one of every kind.
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nomore404.com HTTPS Homepage, 200 + keyword100% 96 ms
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mx.nomore404.com SMTP incoming email · handshake + STARTTLS99.98% 88 ms
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nomore404.com DNS A record, expected answer100% 12 ms
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nomore404.com SSL Let's Encrypt R1161 days
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mail IP + host EMAIL BLOCKLIST outgoing SMTP · fifty lists, hourly0 listings
Rather more than uptime
Most uptime monitors watch HTTP and stop there. Your mail server going quiet, a cron job failing silently or your IP landing on a blocklist costs you just as much, and usually takes longer to notice.
- HTTPS pages, APIs, keyword matching
- SMTP incoming email, handshake and STARTTLS
- DNS resolution and record changes
- Email blocklists your sending IP and domain
- SSL/TLS certificate expiry
- Ping reachability and packet loss
- TCP port any host and port, keyword matching
- Heartbeat cron jobs that stop
- Domain blocklists pi-hole and AdGuard block your site
- WebSocket the socket opens, keyword matching
Be the first to know. Not the fifth person to be woken.
A single failing check is often the network between us and you, not your site. So we never alert on one.
Confirmed from two other continents
Before anyone is contacted, the failure is re-checked from two other continents. One probe failing tells you about one probe, and most single failures are the network in between, not your site.
One alert, not thirty
Tell us your website depends on your server. When the server goes down you get one message about the server, not one for every site on it.
The right person, at the right time
Text yourself immediately, Slack the team after two minutes, email the owner after forty-five. If it recovers before the escalation, the later messages never go out.
Ask an assistant, not a dashboard
Paste one address into Claude, or any assistant that speaks the Model Context Protocol, and ask it what is down and why, or tell it to add a monitor.
Anything our API can do, it can do. It reads your monitors, outages, uptime, maintenance windows and status pages, adds and changes and deletes monitors and groups, schedules and cancels windows, and publishes or unpublishes what a status page shows. It acts as you and never beyond what your role allows: one organisation per connection, chosen when you approve it, and you can disconnect it at any time.
Pricing
Prices per month, excluding VAT. Paying yearly saves 10%. We offer discounts for government, non-profit and education.
€0€0
Always free
For hobby and personal projects
- 5 monitors: websites, plus one each of DNS, TCP and ping
- Checks every 5 minutes
- Email and webhook alerts
- 1 seat
€10€9 /month
Billed monthlyBilled yearly · save 10%
Everything, checked every minute
- 30 monitors, any type
- Checks every minute
- A public status page
- Email, webhook and PagerDuty alerts
- 1 seat
€32€29 /month
Billed monthlyBilled yearly · save 9%
For teams running production
- 100 monitors, any type
- Checks every 30 seconds
- Custom status page address
- Every alert channel we have
- 4 seats
€77€69 /month
Billed monthlyBilled yearly · save 10%
For agencies and MSPs
- 300 monitors, any type
- Checks every 30 seconds
- 10 status pages, one per client
- Custom status page address
- Every alert channel we have
- 10 seats
Every plan, including the free one, has the API, the command line client and MCP.
Start monitoring now
Free for personal projects, and a real plan rather than a trial that expires. Five monitors: any number of websites, plus one each of DNS, TCP and ping, checked every five minutes with no card required. Mail server, blocklist and certificate checks start at the first paid plan, and you can move up whenever you need to.
Hosted in Europe
European company, European datacentres. Your personal data stays put.
Privacy and security by design
Built for GDPR from the start. DPA available for download.
Monitoring since 2002
Rebuilt from the ground up in 2026.