# Upcheck

> Upcheck is website monitoring for teams. It watches every website you own four ways — uptime, SSL certificate, DNS, and domain registration — plus three optional checks: a keyword check that reads one page for text that should or should not be there, a content check that watches a page, one element on it, or the first number in it for change, and a port check that connects to up to ten TCP ports on the website or its origin — and alerts your team by email, Slack, Discord, Teams, or webhook before a small problem becomes an outage. The uptime check takes HTTP options (path, method, request headers, expected status codes, body text, a response-time limit) that turn it into an API check. One plan: $10/month plus $1 per website, with every alert channel included and no seat fees.

How the checks run: uptime is probed over HTTPS every 5 minutes with an outage confirmed on a second failed probe before anyone is alerted, by default a GET of the root with 2xx and 3xx up, 4xx a warning and 5xx down, or with HTTP options a request to any path with any method (GET, HEAD, POST), up to ten headers, an expected-status list, a case-insensitive body text match and a response-time limit whose breach fires a separate slow-response trigger; the keyword check fetches a page you choose every 5 minutes and searches the raw HTML for a word or phrase that should be present or absent, confirmed the same way; the content check fetches a page every 5 minutes, keeps only the visible text (optionally scoped by a CSS selector), and alerts when it, or the first number in it, changes, drops or rises, with before and after in the alert; the port check opens a TCP connection to each named port every 5 minutes with a 4-second timeout and closes it without sending anything, reporting closed, filtered, or unprobeable for a host behind Cloudflare's edge, TCP only and never port 25; SSL certificates are re-checked twice a day (validity, chain, hostname coverage, and expiry); DNS is resolved every 6 hours with alerts on resolution failures or unexpected A, AAAA, NS, or MX record changes; domain registration expiry is tracked daily over RDAP, including registry holds.

## Product

- [Home](https://upcheck.so/): What Upcheck monitors, how alerting works, and pricing
- [SSL Certificate Expiration Monitoring](https://upcheck.so/ssl-certificate-expiration-monitoring): Expiry, chain of trust and hostname coverage re-checked twice a day, with alerts at the thresholds you set
- [Website Uptime Monitoring](https://upcheck.so/website-uptime-monitoring): HTTPS probes every 5 minutes with second-probe outage confirmation
- [Keyword Monitoring](https://upcheck.so/keyword-monitoring): A page of your choosing checked every 5 minutes for text that should be present or absent, matched against the raw HTML
- [Page Change Monitoring](https://upcheck.so/page-change-monitoring): A page, an element or the first number in it compared every 5 minutes with the previous check, alerting on any change, a drop or a rise
- [API Monitoring](https://upcheck.so/api-monitoring): What API monitoring checks and how the uptime check's HTTP options run it — a path, method, request headers, expected status codes, body text and a response-time limit, every 5 minutes
- [Port Monitoring](https://upcheck.so/port-monitoring): Up to ten TCP ports on the website or its origin — SSH, a database, mail, a game server — connected to every 5 minutes, alerting when one stops accepting connections
- [DNS Monitoring](https://upcheck.so/dns-monitoring): Resolution checks every 6 hours plus record-change alerts
- [Domain Expiration Monitoring](https://upcheck.so/domain-expiration-monitoring): Daily RDAP checks on registration expiry and registry holds
- [SaaS Monitoring](https://upcheck.so/saas-monitoring): Every check on every hostname a SaaS ships — app, API, login, docs, customer domains — plus the third-party SaaS it depends on

## Free tools

- [All free tools](https://upcheck.so/tools): Every free checker in one place
- [Is My Website Down?](https://upcheck.so/tools/is-my-website-down): Live request from outside your network with HTTP status, response time, and redirect target
- [HTTP Headers Checker](https://upcheck.so/tools/http-headers-checker): Every response header a URL sends, plus which common security headers are missing
- [HTTP Status Code Checker](https://upcheck.so/tools/http-status-checker): Status codes for up to 10 URLs, redirects followed, every code explained
- [Security Headers Checker](https://upcheck.so/tools/security-headers-checker): HSTS, CSP, and four more headers graded A+ to F with fixes
- [TTFB Test](https://upcheck.so/tools/ttfb-test): Time to first byte on a fresh request and on repeats, rated against web.dev thresholds
- [Redirect Checker](https://upcheck.so/tools/redirect-checker): The full redirect chain, hop by hop, with status codes and timing
- [Uptime Calculator](https://upcheck.so/tools/uptime-calculator): SLA percentage to allowed downtime per day, week, month, and year, and back
- [Check SSL Certificate](https://upcheck.so/tools/check-ssl-certificate): See any hostname's issuer, expiration date, SANs, key size, and full chain, whether it validates, and what a server is really serving after a renewal — no signup
- [DNS Lookup](https://upcheck.so/tools/dns-lookup): A, AAAA, CNAME, MX, NS, TXT, SOA, and CAA records with TTLs from a public resolver
- [A Record Lookup](https://upcheck.so/tools/a-record-lookup): The IPv4 and IPv6 addresses a domain resolves to
- [CNAME Lookup](https://upcheck.so/tools/cname-lookup): What a name is an alias for, and the chain it follows
- [NS Lookup](https://upcheck.so/tools/ns-lookup): A domain's authoritative nameservers
- [TXT Record Lookup](https://upcheck.so/tools/txt-lookup): Every TXT record on a name, shown whole
- [CAA Record Lookup](https://upcheck.so/tools/caa-lookup): Which certificate authorities may issue for a domain, climbing to the parent like a CA does
- [Reverse DNS Lookup](https://upcheck.so/tools/reverse-dns-lookup): The PTR record behind an IPv4 or IPv6 address
- [DNS Propagation Checker](https://upcheck.so/tools/dns-propagation-checker): The same record from a dozen public resolvers, and which of them agree
- [MX Lookup](https://upcheck.so/tools/mx-lookup): A domain's mail servers in priority order
- [SPF Checker](https://upcheck.so/tools/spf-checker): SPF record with includes followed, lookup count against the limit of ten, and validation findings
- [DKIM Checker](https://upcheck.so/tools/dkim-checker): DKIM keys by selector or common-selector discovery, with key length and revocation checks
- [DMARC Checker](https://upcheck.so/tools/dmarc-checker): DMARC policy at _dmarc with each tag explained and validation findings
- [WHOIS Lookup](https://upcheck.so/tools/whois-lookup): Domains (registrar, expiry, status, nameservers) and IP addresses (owning organisation, range, country, abuse contact) over RDAP
- [Typosquatting Checker](https://upcheck.so/tools/typosquatting-checker): Lookalike domains of yours (typos, look-alike characters, other TLDs, brand + keyword) and which are registered, with web and mail servers
- [Port Checker](https://upcheck.so/tools/port-checker): Whether TCP ports on a host or IP accept connections from the internet

## Comparisons

- [UptimeRobot Alternative](https://upcheck.so/uptimerobot-alternative): One plan instead of a tier grid; every alert channel included
- [Oh Dear Alternative](https://upcheck.so/ohdear-alternative): The four core checks without paying for a full suite
- [TrackSSL Alternative](https://upcheck.so/trackssl-alternative): SSL plus uptime, DNS, and domain monitoring at one price

## Optional

- [Privacy Policy](https://upcheck.so/legal/privacy)
- [Terms of Service](https://upcheck.so/legal/terms)