I think there are 3 different answers to these:
1. If it is an external hostname, like a www.google.com, you can actually add it as a node in Orion NPM and consequently be able to monitor its latency and packet loss as a node.
2. If you already have Server and Application Monitor (SAM), then you can use the application monitors HTTP Monitor and HTTPS Monitor to monitor any URL, then be able to get latency metrics as well.
3. Even a much better solution is, if you have Web Performance Monitor (WPM), you can use it to simulate user actions in accessing a website. Each step, like clicking a link or choosing an option in a dropdown, will have its latency recorded.
Since you can monitor the latency, SolarWinds can create custom thresholds for your alerting requirements.
You could also use NetPath.
WE have NPM,NTA,IPAM and we want url letecy report and alert for this