DNS Record Types Explained
Lets understand DNS and types with spy mission James Bond.
Mission Details:
James received code name: www.chaicode.com
Goal: Reach enemy basecamp (website), check messages and verify its real.
James has two intelligent tools:
1. nslookup→quick call to headquarters, fast answers, simple
2. dig→ detailed intelligence report more advance.
James starts the mission:
Step1: Who is officially managing the target? I need headquarters contact.
dig NS chaicode.com
James found out- Names of headquarters servers controlling the domain
Step2: Check if codename/alias (CNAME record)
Is www.chaicode.com is nick name or real name.
Quick check-
nslookup -type=CNAME www.chaicode.com
What James got to know:
If cname exists→ this is alias pointing to real target.
If cname does not exists→ name is direct target
With this information James got clarity that name is not fake.
Step3: Check exact location (A record IPV4)
dig A www.chaicode.com
Above command gave James exact enemy location. Real IP address found.
Step4: Check modern gps (AAAA Record-IPV6)
nslookup -type=AAAA www.chaicode.com
James found:
If present→ new IPv6 coordinates.
If absent→ IPv4 is sufficient.
Step5: Where secret messages go (MX Record) i
dig MX www.chaicode.com
James get to know below:
1. Mail servers and priority
2. Only for emails and not for website access.
Step6: Verification of secret code (TXT Record)
nslookup -type=TXT chaicode.com
James got below:
Ownership proof
Ensure the base is real and not a trap.
This is how James mission is accomplished he verified code name successfully 🎉
