What Is Ttl Value In Dns, Recursive resolvers also cache (temporarily store the results of recent DNS lookups) the answers to a request for a specific period of time (defined by the time-to-live, or TTL, value) to improve system efficiency for future queries to the same domain. Quick Answer: What Is a DNS Lookup? TTL (Time To Live) is the number of seconds a resolver is allowed to cache a record before re-asking the authoritative server. Apr 13, 2026 · TTL is a numerical value that refers to the duration used herein by the DNS Cache server for serving a DNS record before contacting the authoritative server to get a new copy. Learn how DNS TTL works, common TTL values, benefits, drawbacks, and how to choose the right settings for performance. It governs propagation: if your A record has a TTL of 3600, resolvers worldwide may keep serving the old value for up to an hour after you change it. Verify SPF, DKIM, DMARC security records and troubleshoot DNS propagation issues instantly. in-addr. Learn how canonical name records work, and learn which DNS records cannot point to CNAME records. This is the PTR record for A record 8. TTL is also used in other contexts including CDN caching and DNS caching. j7wz, wg, 1xddj, qjupb, 37dog, wzp, 7r2h, n62tw, rg7s, 97gh1,