What are the high difficulty pool addresses?

Currency Stratum server URL Port
XMR xmr.pool.minergate.com 45704
XMC xmc.pool.minergate.com 45564
ETC etc.pool.minergate.com 45781
ETH eth.pool.minergate.com 45795
ZEC zec.pool.minergate.com 3361
BCN bcn.pool.minergate.com 45554
BTG btg.pool.minergate.com 3261
XMC+BCN xmc-bcn.pro.pool.minergate.com 45585