SecurityTrails

Tool manual · Kali & common usage

OSINT · Intermediate · OSINT lane

IntermediateOSINT — DNS

Authorized usage only. Capture and inspect traffic only on systems and networks you own or have written permission to analyze.

What is SecurityTrails?

SecurityTrails provides historical DNS and related infra data.

Domain/DNS OSINT for assets in scope.

Official website: SecurityTrails · Documentation

When do you use it?

You need Historical DNS, subdomains, and WHOIS intelligence.
You are following a CYNARKS lab or authorized engagement that calls for SecurityTrails.
You already tried simpler checks and need this tool’s deeper capability.

Who uses it?

OSINT analysts
Investigators (lawful use)
Red teamers (authorized recon)

How do you use it? (typical flow)

Install SecurityTrails using the steps below (prefer Kali package or official installer).
Confirm you have authorization for the target (lab VM, own system, or written scope).
Run --help / man (or the Help section) to see current flags for your version.
Start with a safe example from Basic commands against localhost or an authorized lab target.
Record what you ran, what you observed, and any follow-up (filter, report, remediation).

Help & manual (like man / --help)

Every serious tool has a built-in way to look up flags. Learn these first so you are not stuck memorizing every option.

1. Site
```
https://securitytrails.com/
```

Kali Linux

Web/API service.

1. Installation

OS	Installation
`Kali Linux`	Web/API service.
`Web`	https://securitytrails.com

2. Basic commands

1. Review historical A/NS records
```
Lookup your domain
```
Review historical A/NS records
2. Show help
```
Lookup --help
```
List flags for your installed version (same habit as man/--help).
3. Short help
```
Lookup -h
```
Alternate help flag when supported.

5. Useful features

DNS history
Subdomains

6. Practical examples

Example 1: Review historical A/NS records
```
Lookup your domain
```
Review historical A/NS records
Example 2: Show help
```
Lookup --help
```
List flags for your installed version (same habit as man/--help).
Example 3: Short help
```
Lookup -h
```
Alternate help flag when supported.

7. Important notes

Freemium; API for automation on owned domains.
Authorized targets only — labs, systems you own, or written permission.
Prefer reading --help / man / official docs for your installed version; flags change over time.

Related course: ethical hacking penetration testing · soc analyst blue team · Commands: /osint