Prerequisites and maximums for configuring DNSSEC for a domain

• https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/domain-configure-dnssec.html#domain-configure-dnssec-prerequisites

The number of public keys that you can add to a domain depends on the TLD for the domain:

• .com and .net domains – up to thirteen keys
• All other domains – up to four keys

See also

• DNSSEC