See The InternetClearly
One command center to monitor your sites, APIs, DNS, and certificates.
Catch problems before your users do.
Every Layer → Every Signal ≋
Diagnostic pillars that isolate root causes across internet infrastructure
Connectivity & Path
DNS Intelligence
Web & Delivery
TLS & Certificates
Email Security
Port & Services
WHOIS & Domain Intel
Security Headers
Any check becomes a 24/7 monitor
Run a diagnostic once, then let Synapse watch it around the clock. We catch the failure, confirm it, and route the alert to wherever your team already works.
Alerts delivered to
api.acme.com is DOWN
HTTP 500 · 2 failed checks · Frankfurt + Ashburn
Recovered after 4m 12s
api.acme.com · 200 OK
See It From Your Users’ Side
Your monitors run on Cloudflare’s global edge, 330+ cities across 120+ countries.
Before we alert you, every failure is re-checked from another region, so you catch real regional outages without the false alarms.
From Signal to Root Cause
Every check is broken down by layer: DNS, TCP, TLS, and application response, each one timed and validated on its own.
So when something is slow or broken, you see the exact layer that caused it, not just that the site is down.
A record resolved via Cloudflare 1.1.1.1: 4 nameservers queried, DNSSEC valid
TCP handshake to 104.26.10.78:443, 12 hops, 0% packet loss, MTU 1500
TLS 1.3 / AEAD-AES256-GCM, cert valid, chain complete, OCSP stapled
HTTP/2 200 OK, Server: cloudflare, CF-Cache-Status: HIT, 12.4 KB response
Request Waterfall
Built to Scale With You
One plan. Every monitor type included. Scale up whenever you need more.
Pro
Everything included. Pay only for scale.
- 50 continuous monitors
- Every monitor type: uptime, SSL & domain expiry, email auth, blacklist, DNS change
- Root-cause analysis on every failure (DNS, TCP, TLS, app)
- Multi-region verification for fewer false alarms
- 60-second checks
- 13-month data retention
- Every alert channel: Slack, Discord, Webhook, PagerDuty
- Status pages, team seats & API access
- Scale with +25 monitor packs at $25
Need more monitors?
Add a pack whenever you need more capacity