When architecting with domains, services and URLs this pattern seems to come round a lot, but I’ve never heard of it being given a formal name or description:
protocol. service. env. example. com / product
I will call it the Common URL Pattern. In a real-world scenario it would resolve to something like: http://www.test.example.com/support. Here is the same pattern again but this time expressed by throwing some UML around.

And finally by way of explanation, some comments on the parts.
protocol | Underlying transport layer such as https, smtp |
---|---|
service | Shared across a technology stack: www, mail, api, db |
environment | Instances of the stack with functional variation, e.g. test, dev |
domain | Identifier in the Internet namespace: a.b.c |
product | A website or application that handles end-user interaction, e.g. /blah |
It seems like a fairly adaptable model that can be applied to a large number of websites and web-based applications.