DNS Lookup

A — Maps a domain to an IPv4 address (e.g. 93.184.216.34). The most common record type — it's what tells browsers where to find your site.

AAAA — Maps a domain to an IPv6 address. The modern equivalent of A records for the next-generation internet protocol.

CNAME — Canonical Name — aliases one domain to another (e.g. www.example.com → example.com). Cannot coexist with other records at the same name.

MX — Mail Exchanger — specifies which mail servers handle email for the domain. Each entry has a priority value; lower numbers are tried first.

TXT — Stores arbitrary text strings. Used for SPF (email sender validation), DKIM keys, DMARC policies, domain ownership verification, and more.

NS — Name Server — lists the authoritative DNS servers for a domain. These servers are the source of truth for all DNS records in the zone.

SOA — Start of Authority — describes the primary nameserver, admin email, and zone parameters (serial, refresh, retry, expire). One per DNS zone.

CAA — Certification Authority Authorization — restricts which certificate authorities may issue TLS/SSL certificates for the domain, preventing mis-issuance.