DNS Record Types Explained ?

🌐 DNS Record Types Explained

DNS (Domain Name System) is the system that translates website names into IP addresses so computers can find each other on the internet.

👉 Humans use names like google.com
👉 Computers use numbers like 142.250.190.14

A Record (Address Record)

• Purpose: Maps a domain name to an IPv4 address

• Example:
  example.com → 93.184.216.34

• Use case: Basic website hosting

---

AAAA Record (IPv6 Address)

• Purpose: Maps a domain to an IPv6 address

• Example:
  example.com → 2606:2800:220:1:248:1893:25c8:1946

• Use case: Modern networks using IPv6

---

CNAME Record (Canonical Name)

• Purpose: Points one domain name to another domain

• Example:
  www.example.com → example.com

• Use case: Aliases and subdomains

---

MX Record (Mail Exchange)

• Purpose: Routes emails for a domain

• Example:
  example.com → mail.google.com

• Use case: Email delivery

TXT Record (Text Record)

• Purpose: Stores text-based information

• Common uses:

  • Domain verification

  • SPF / DKIM / DMARC (email security)

• Example:
  "v=spf1 include:_spf.google.com ~all"

---

NS Record (Name Server)

• Purpose: Specifies which servers manage DNS for the domain

• Example:
  ns1.hostingprovider.com

• Use case: DNS delegation

---

🔧SRV Record (Service Record)

• Purpose: Defines services and ports

• Example:
  _sip._tcp.example.com

• Use case: VoIP, chat, and service discovery

  PTR Record (Pointer Record)

  • Purpose: Reverse DNS (IP → Domain)

  • Example:
    93.184.216.34 → example.com

  • Use case: Email validation & security