Verisign Registry
Scheduled for Feb 22, 22:00 UTC  -  Feb 23, 00:00 UTC
During the maintenance all domains will continue to resolve, but all other services may be unavailable.

For a list of affected TLD's please look the registry up in the following spreadsheet:
Posted 27 days ago. Jan 23, 2018 - 21:23 UTC
This scheduled maintenance affects: Domain Services (Core ccTLDs, Other gTLDs).