How  reliable  are internet speed test at the moment I have  TOT package 400 mbps download check on TOT site average 350mbps  nperf  194 mps  do companys give true  speed checks on their own sites speed test   

TOT test would be accurate  speeds vary Igot 200mbs sometimes it runs between 120 and 250. 

My TV and setup box in living room ethernet to router both always exceed 200mbs. Wifi sets and computers much slower. 

TOT is our provider. 

ANALITI is a good speed test.