Step-by-step DNS configuration guide for domain setup
Learn how to configure DNS records for your startup's domain. Covers hosting, email, verification, and security records.
| Type | Purpose | Example | TTL |
|---|---|---|---|
| A | Points domain to IPv4 address | example.com → 76.76.21.21 | 300-3600s |
| AAAA | Points domain to IPv6 address | example.com → 2606:4700::1 | 300-3600s |
| CNAME | Alias to another domain | www → example.com | 300-3600s |
| MX | Mail server routing | 10 aspmx.l.google.com | 3600s |
| TXT | Verification, SPF, DKIM, DMARC | v=spf1 include:_spf.google.com ~all | 3600s |
| NS | Nameserver delegation | ns1.cloudflare.com | 86400s |
| CAA | Certificate authority authorization | 0 issue "letsencrypt.org" | 3600s |
| SRV | Service location (rare for most startups) | _sip._tcp.example.com | 3600s |