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Title: Website Monitoring | Uptime & Performance Dotcom-Monitor
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Search “how to monitor a phone number” and most of what comes back is about surveillance. Spy apps, GPS trackers, tracing who called you. That is a different problem for a different reader.
This guide is for the operations side. You own phone numbers that customers, patie...
Operational resilience · ICT risk management · Financial services
External synthetic monitoring verifies customer-facing services from outside the network perimeter, along the path a user follows.The Digital Operational Resilience Act (DORA), Regulation (E...
Every monitoring check starts the same way. Before a single byte of your homepage, API response, or SMTP banner comes back, the monitoring agent has to turn a hostname into an IP address. That first step is DNS resolution, and how you configure it changes what your uptime numbers actually mean.
Most teams never touch the DNS setting on a monitor. They point a c...
Most sites now run dual-stack. The same server, API, or checkout page answers over both IPv4 and IPv6 at the same time. That setup keeps you reachable as IPv4 addresses get scarce, but it also splits your traffic across two networks that fail independently.
Here is the problem that creates. If your mo...