> ## Documentation Index
> Fetch the complete documentation index at: https://docs.snapsec.co/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS Resolver

> Integrate DNS Resolver to automatically fetch and enrich subdomain data within AIM.

## Overview

The **DNS Resolver integration** allows AIM to query DNS records directly and ingest discovered subdomains into your asset inventory.\
This ensures continuous visibility into DNS-related assets, even if they are not present in third-party platforms.

AIM uses DNS resolution intelligence to enrich each discovered asset with metadata such as CNAMEs, A/AAAA records, and status indicators.

![](https://mintlify.s3.us-west-1.amazonaws.com/snapsec-23724fa2/images/aim/integrations/dns-resolver.png)

DNS Resolver Integration Interface

***

## What This Integration Does

* Resolves DNS records for domains you onboard into AIM
* Identifies live, inactive, or shadowed subdomains
* Fetches A, AAAA, CNAME, NS, and other DNS record types
* Continuously updates changes when DNS modifications occur

This enables accurate, real-time mapping of your organization’s DNS footprint.

***

## How to Configure DNS Resolver

**1. Open Integrations**

Navigate to **AIM → Integrations** in the Snapsec dashboard.

**2. Select DNS Resolver**

Click on the **DNS Resolver** integration tile.

**3. Install Integration**

Click **Install** — no API keys or credentials are required.

**4. Start Discovery**

Once installed, AIM will begin resolving DNS data for your existing domains.

***

## Data Pulled by DNS Resolver

| Data Type | Description |
| - | - |
| **A / AAAA Records** | Maps subdomains to IPs (IPv4/IPv6) |
| **CNAME Records** | Identifies alias mappings and CDN usage |
| **NS Records** | Shows authoritative name servers |
| **Live / Inactive State** | Detects active vs. dead subdomains |
| **Shadow DNS Entries** | Identifies DNS records not tracked internally |

***

## Sync Behavior

* DNS resolution runs **automatically** at regular intervals
* Any new DNS-derived subdomain is added to AIM
* Deleted or outdated DNS entries update the asset state
* All resolved records are stored in the asset’s metadata panel

***

## Next Steps

> [card] [View Subdomain Inventory](https://docs.snapsec.co/products/aim/subdomains)
>
> Explore DNS-enriched subdomains in the AIM catalog.


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