Just for information....
"Internet" is a contraction for "Inter-Network" -- even the most conservative ways of counting puts well above 20,000 networks, all run by different companies, and all managed independently.
There is a utility called traceroute that will tell you how far it is from one computer to another. Tracing from my computer on UIA shows 11 "hops" to
www.wrightwoodcalif.com. That's fairly normal.
Different end-points, different numbers of hops. There is a different network between each pair of machines.
Two of the first four are private address space, probably the first four are UIA. Then traffic passes to NTT (Nippon Telephone and Telegraph, they're worldwide).
They hand off to GTT.
GTT hands of to FutureQuest.
They connect WrightwoodCalif.com.
Point being, any one of those can be having a bad day, and we'd see it trying to post to the forum.
Every site and service will have a different path, and it's nearly always going to be at least two companies, and more than a half-dozen networks.
UIA is, generally speaking, well connected.