cb0324
Onvoy did not buy YMax to my knowledge.
YMax is the carrier arm of MagicJack (and they are the same company).
MagicJack merged with the Israeli company VocalTec in 2010.
B. Riley Financial acquired [magicJack VocalTec Ltd.] in 2018 for $143 million. They are venture capitalists.
YMAX is licensed as a CLEC in Florida (supposedly their US headquarters) and other states.
I might be wrong but AFAIK there is no corporate relationship of YMAX with Onvoy/Sinch.
It's possible that Onvoy provides some services to YMAX/MJ.
The founder of MagicJack (Dan Borislow of Florida) died in 2014 at age 52....