Automated DNS records lookup for subdomains with HackerTarget API reports

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

EnumX: Auto DNS Lookup for Subdomains with Markdown Export Who’s it for Security engineers, red teamers, or automation curious teams looking to enhance passive reconnaissance with minimal effort...

Best for

SecOps automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.manualtrigger, n8n-nodes-base.set, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.merge, n8n-nodes-base.gmail, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Adnan Tariq.

Original n8n.io source

1.1 Workflow description

Title: Automated DNS records lookup for subdomains with HackerTarget API reports
Workflow name: Automated DNS records lookup for subdomains with HackerTarget API reports

🧠 EnumX: Auto DNS Lookup for Subdomains with Markdown Export

Who’s it for

Security engineers, red teamers, or automation-curious teams looking to enhance passive reconnaissance with minimal effort. Ideal for early-stage security setups, bug bounty hunters, and SME SOC analysts.

What it does

This workflow performs passive subdomain enumeration and DNS record lookup for a given domain. It parses the data, generates a clean markdown report, and sends it via email.

🌐 Uses HackerTarget APIs for subdomain and DNS data

🧠 Parses records (A, AAAA, CNAME, TXT, MX, NS, SOA)

📨 Sends a structured markdown report to a designated inbox

🛡️ Useful for recon, misconfiguration detection, and compliance evidence

How to set up Replace the email address in the Gmail node with your recipient.

(Optional) Replace HackerTarget API with your own recon APIs.

Click Execute Workflow or trigger via cron on schedule.

View the full markdown output in your inbox.

Requirements Free Gmail account (with n8n Gmail OAuth2 configured)

(Optional) Replace example.com with your target domain

Internet access (API calls use HTTPS)

How to customize the workflow Modify the target domain via the "🌐 Target Domain" Set node

Adjust markdown format in “📝 Format DNS Markdown”

Replace Gmail node with Slack/Telegram/Notion if preferred

Add additional enrichment nodes (e.g., Shodan, VirusTotal) for deeper analysis

*💼 This template is part of the CYBERPULSE AI BlueOps/RedOps suite.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 2 - 🌐 Target Domain

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - 📡 Subdomain Enum

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 4 - 🧠 Parse Subdomains

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 5 - 🌐 DNS Records

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 6 - 📝 Format DNS Markdown

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 7 - 🔗 Merge DNS + Subdomain

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 8 - 🧠 Parse DNS Records

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 9 - Gmail

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 10 - 🧩 Merge All Markdown

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 11 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 12 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 13 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Automated DNS records lookup for subdomains with HackerTarget API reports
Complexity	intermediate
Nodes	13
Categories	SecOps
Author	Adnan Tariq
Published	24 Jul 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/6355/6355.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source SecOps workflows

Frequently asked questions

What does Automated DNS records lookup for subdomains with HackerTarget API reports do?

EnumX: Auto DNS Lookup for Subdomains with Markdown Export Who’s it for Security engineers, red teamers, or automation curious teams looking to enhance passive reconnaissance with minimal effort...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your SecOps use case.

Adnan Tariq

23 workflows

Nodes

n8n-nodes-base.manualtrigger n8n-nodes-base.set n8n-nodes-base.httprequest n8n-nodes-base.code n8n-nodes-base.merge n8n-nodes-base.gmail n8n-nodes-base.stickynote

Complexity

intermediate

Published 24 Jul 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/6355/6355.json

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Automated DNS records lookup for subdomains with HackerTarget API reports

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Block 2 - 🌐 Target Domain

Block 3 - 📡 Subdomain Enum

Block 4 - 🧠 Parse Subdomains

Block 5 - 🌐 DNS Records

Block 6 - 📝 Format DNS Markdown

Block 7 - 🔗 Merge DNS + Subdomain

Block 8 - 🧠 Parse DNS Records

Block 9 - Gmail

Block 10 - 🧩 Merge All Markdown

Block 11 - Sticky Note

Block 12 - Sticky Note1

Block 13 - Sticky Note2

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions