Like posted 2 days ago, Binance which is one of the top trading platform have gone down for scheduled maintenance. Right now both withdrawals and trading are halted and it is expected to be like this for next 2 more hours. This maintenance started at 2:00 am GMT and gonna last till 6:00 am GMT.
Jager on official telegram channel also confirmed this update:
You can read more about this https://support.binance.com/hc/en-us/articles/360005051732