Is your server really up?
Check from 5 continents.
Continuous uptime monitoring from a global network of servers. Catch outages before your customers do, wherever they happen and whichever check type you run.
From signup to your first check in minutes
Add what to monitor
Paste a URL, hostname or IP address, plus a port number for port monitors. HTTP, ICMP or TCP/UDP port: pick the right monitor type for what you're watching.
We check from 5 continents
Every monitor runs on an interval from one minute up to hourly. Each cycle starts from one location in our global network, chosen at random, and moves on to more of them the moment a check fails.
You get alerted when the failure is confirmed
Once enough locations agree the check is failing, you get notified by email, SMS, voice call, or Telegram. Escalation rules step through your contact methods until you confirm receipt. When a check starts failing, each location that sees the failure captures a Forensic Snapshot (MTR route trace, DNS, response headers on HTTP checks, the served certificate on HTTPS), stored with that check; the last healthy baseline is in the same check history to diff against.
Every layer, one dashboard
Real services depend on more than HTTP: ports, certificates, DNS resolution, ICMP reachability. Emercom monitors HTTP, ports and ICMP from the same global network, checks certificates on every HTTPS run, and captures DNS and MTR route diagnostics when something fails, all on the same dashboard, with the same alert rules.
HTTP & HTTPS
Status codes, response time, redirect following, content matching, and SSL certificate health on every check.
ICMP (Ping)
Round-trip latency and packet loss, recorded per location that runs the check. Catch a routing change or ISP issue when either crosses your threshold, before users do.
TCP & UDP Ports
Verify a port is reachable through your firewall from multiple regions. Useful for SSH, SMTP, custom services, and game servers.
DNS Diagnostics
Failures capture a DNS query alongside an MTR route trace, so you can tell a resolution problem from a routing one. Query A, AAAA, CNAME, MX and TXT records on demand from resolvers worldwide with the free DNS tool.
SSL & TLS Certificates
Included on every HTTPS monitor, checked on each run. Detect expiry weeks ahead, and get alerted when a broken chain or a hostname mismatch fails the check.
Alert Routing & Escalation
Email, SMS, voice calls, Telegram. Escalation through up to ten levels, with acknowledgement and recovery notices.
We capture the evidence before an outage clears.
Every engineer has lived this: the pager goes off, you SSH in, and the symptom is already gone. Routes re-converged. The DNS cache rolled over. The cert that broke the chain rotated. You spend the next forty minutes trying to reproduce an outage that healed before you opened your laptop.
Emercom doesn't let outages cover their tracks. About every two hours, while your service is healthy, we capture a full diagnostic Forensic Snapshot from a monitoring node: DNS, MTR route trace, response headers on HTTP monitors, and the served certificate on HTTPS. When a check starts failing, we capture it again automatically.
By the time you open the dashboard, the broken state and the last known-good baseline are both waiting in the check history. Instead of reproducing the outage you compare two snapshots, and the cause is usually visible: a route that vanished four hops in, a cert that rotated and no longer verifies, an A record pointing somewhere new.
Why multi-region monitoring matters
A site can be fast in New York and broken in Tokyo. CDN edges fail unevenly, DNS propagates at different speeds in different regions, ISP routing changes black-hole traffic from specific countries, and geo-firewall rules silently block users you didn't know about. Single-location uptime tools can't see the difference.
Emercom runs your monitors across the regions you select. When something goes wrong, each location that ran the check is listed with its own result, so you can see where it broke and where the target was still reachable, and tell a global outage from a regional one.
Our nodes are spread across 5 continents and 13 countries.
Status pages with subscriber notifications
Group your services into one status page: categories of services, your domain, your timezone. When something goes down, post an incident, and your subscribers hear about it by email, SMS, Telegram, or a phone call.
Subscribers can sign up for a single service or for everything you publish, and every notification email carries a one-click unsubscribe link. You stay in control of what gets posted with an optional approval workflow.
Frequently asked questions
What teams ask before they get started. Anything missing? Drop us a line.
Do I need a credit card to start?
No. Every account runs on a recurring free tier: a base level of monitoring that keeps going at no cost, so you can add monitors right away. Scheduled checks and status pages both draw on that allowance; email and Telegram alerts are always free.
What can I monitor?
Anything reachable on the public internet: websites, REST APIs, web services, SSH/SMTP/database ports, SSL certificates on any HTTPS URL, custom application health endpoints. If it has a URL, hostname, IP, or port, Emercom can watch it.
How fast are alerts?
Alerts are sent as soon as a failure is confirmed. How quickly a failure is spotted depends on your check interval, which you can set from every minute up to hourly. Confirmation comes from agreement across locations: by default a resource is only marked down when more than two monitoring nodes report a failure in the same cycle (or all of them, when the monitor has fewer than three locations), so on a monitor with several locations, one flaky location does not page you. The threshold is adjustable per monitor. From there the alert routes through your preferred channels, with optional escalation rules; for a contact with escalation on, the first notice waits for the escalation delay you set.
Do I get diagnostics with my alert, or do I have to dig for them?
No digging. Every monitor captures a Forensic Snapshot about every two hours while healthy, and another automatically when a check starts failing. Open that failed check and the diagnostics from the failure sit right there; the most recent healthy baseline is another row in the same check history, ready to compare against. No SSH, no racing the route to heal.
Where do checks run from?
A global network of monitoring locations, listed on the locations page. Each cycle starts from one of the locations your monitor is set to use and moves on to others if that check fails; every result is stored with the node that ran it.
Start monitoring in minutes
Add your first monitor on the free tier and get a result before you finish your coffee.