Verisign Registry
Scheduled for Apr 19, 01:00 - 01:45 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 Mar 19, 2020 - 15:32 UTC
This scheduled maintenance affects: Domain Services (Core gTLDs).