Awesome list. Got a bit nostalgic seeing so many places where I've registered got shut down
Also found many which I've never heard of and got surprised by the huge amount of Chinese exchanges.
Anyway here are some observations:
Allcoin.com -
Important Notice About the Allcoin.com Takeoverbityes.com -
In order to provide more efficient and convenient services, BitYes has been integrated to Huobi on Aug 31st.coinmkt.com -
ANX International Is Retiring The CoinMkt.com Domain. They offer a link to digatrade.com which I don't see in your list.
masterxchange.com -
It is with a heavy heart that we are announcing we are going to shut down the exchange in a few weeks.yacuna.com -
We are shutting downupbit.org - Seems to be a site about hummingbirds???
Server not found, 404, blank page or connection timed out:coin.mx
ecoinfund.com
europex.eu
exbito.com
globobit.com
netagio.com
ccnex.com
coinport.com
lazycoins.com
vaultex.io
These ones I didn't find in your list:
bitstamp.net
bitcoin.de
bitcoin.co.id
vaultoro.com
coinbroker.io
livecoin.net
indacoin.com