OnBlock is another exchange which didn't live up to expectation and just disappeared all of a sudden without any trace. After researching on this exchange, I was able to come up with some useful information about the exchange.
Presently, the exchange no longer offers any trading services nor does it have a known trading volume. Launched in 2017/18, OnBlock was a spot exchange that allowed for the easy trading of digital currencies without any need for a third party. This exchange didn't do any of these for long before closing off. The sudden disappearance wasn't even announced which gives a strong indication that this exchange is a Scam Exchange. The twitter account has only 164 followers and the Telegram group contains about 186 members which shows that this exchange has a low social media presence.