Verisign Registry
Scheduled for Sep 22, 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 25 days ago. Aug 22, 2019 - 13:49 UTC
This scheduled maintenance affects: Domain Services (Core gTLDs, Other gTLDs).