Verisign Registry
Scheduled for Nov 16, 23:00 UTC  -  Nov 17, 03:00 UTC
During this scheduled system maintenance by the registry, the following services may be unavailable:

Availability Checks
Whois Services
Domain Purchases
Domain Renewals
Domain Updates

For a list of affected TLD's, please look the registry up in the following spreadsheet:
Posted 28 days ago. Aug 19, 2019 - 15:45 UTC
This scheduled maintenance affects: Domain Services (Core gTLDs, Other gTLDs, Other ccTLDs).