The TTL (Time To Live) is a general term in IT referring to the expiry of an item. TTL in DNS records


A DNS record’s TTL (Time To Live) sets the time the record may be cached. During this time, clients don’t ask the authoritative server for information. Frequent values vary from 1 hour to 1 day. Very small TTL values (below 300s) may be ignored by resolvers. It is important to note, that TTL values are stored per-record, not per-zone (domain). DNS updates A DNS entry […]