Question 1

What does TTL (Time to Live) mean on a DNS record?

Accepted Answer

TTL indicates how many seconds a DNS answer may remain cached before resolvers check for updated records.

Question 2

Why should I lower TTL before moving a website to a new server?

Accepted Answer

Lowering TTL to 300 seconds a day before migration ensures visitors reach the new server quickly once you update your DNS records.

Question 3

When should I use a CNAME record instead of an A record?

Accepted Answer

Use an A record to point a domain to an IPv4 address, and use a CNAME record to point a subdomain (such as www or shop) to another hostname.

DNS Lookup (nslookup) | Everyday web tasks, made easier. — Fantatree — Look up your domain’s DNS records (A, AAAA, CNAME, MX, NS, TXT, SOA, CAA) and inspect their cache duration (TTL) and authoritative nameservers.