A TTL is below one minute or above one week.

ZONE_TTL_UNUSUAL · Severity: Info

InfoZONE_TTL_UNUSUAL
A TTL is below one minute or above one week.
Very short TTLs multiply the queries to your name servers; very long ones make changes slow to reach users, and common resolvers cap cached TTLs at a week or less anyway. Both can be deliberate: a Cloudflare export writes TTL 1 for Auto, which is reported here and is not a mistake.

Reported by

Warning ZONE_TTL_MISMATCH Records of one name and type have different TTLs.
Error ZONE_TTL_OUT_OF_RANGE A TTL is larger than DNS allows.
Warning ZONE_TARGET_IS_CNAME An NS, MX or SRV record points to a name that is a CNAME.
Warning ZONE_TARGET_NO_ADDRESS An NS, MX or SRV target inside the zone has no address record.
Error ZONE_CNAME_AT_APEX The zone apex has a CNAME record.
Error ZONE_CNAME_WITH_OTHER_DATA A name has a CNAME and other records at the same time.