External Resource Monitoring - Track CDN and Third-Party Dependencies | upsonar.io

Pricing
Changelog
Blog

Getting Started

Monitor Types

Availability SSL Certificates Domain Expiry DNS Monitoring

Features

External Resources Incidents

Integrations

Email Telegram Slack Webhooks

Back to Documentation

Custom HTTP Headers - Monitor Authenticated APIs Incident Management - Track, Acknowledge, Resolve Outages

Website monitoring that checks what your users actually see. Not just "server responds 200".

Product

Uptime Monitoring
SSL Monitoring
Domain Monitoring
DNS Monitoring
Dependency Monitoring
Keyword Monitoring
Status Pages
Pricing

Resources

Documentation
Getting Started
Integrations
Blog

Free Tools

Uptime & Dependency Checker
SSL Checker
Domain Expiry Checker
Full Diagnostics
Third-Party Resource Checker

Company

Changelog
Privacy Policy
Terms of Service

© 2026 upsonar.io. All rights reserved.

Made for developers who hate downtime