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Service Detection


Zone Transfer (AXFR)

Full dump of all DNS records. Often misconfigured.

Enumeration

A Record

MX Record

NS Record

TXT Record (SPF, DKIM)

Any Record

Reverse Lookup

Reverse Lookup Sweep


Subdomain Brute-Force

dig

dnsenum

dnsrecon

gobuster


DNS Cache Snooping

Check if domain was recently resolved (reveals internal browsing):
Non-zero answer = domain was in cache.

Useful Records to Check


Quick Reference