Verisign Registry
Scheduled for Aug 30, 21:00 UTC  -  Aug 31, 01:00 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 11 days ago. Aug 03, 2018 - 18:12 UTC
This scheduled maintenance affects: Domain Services (Core gTLDs).