---
title: "Domain Search"
slug: "domain-search-1"
updated: 2026-07-15T12:39:39Z
published: 2026-07-15T12:39:39Z
canonical: "help.silentpush.com/domain-search-1"
---

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

# Domain Search

**Silent Push Domain Search** helps you discover and investigate domains across the entire internet’s IPv4 space using powerful passive DNS, WHOIS, network, and pattern-matching data.

## Important Note on Data Retention

**Domain Search** is limited to **A records with a** `last_seen` **timestamp within the last 30 days**. This provides a focused, high-confidence view of currently active infrastructure but means older or stale domains will not appear in results.

For broader historical or full WHOIS data (including domains older than 30 days), use **Full WHOIS** search instead. Many users notice significantly fewer results in Domain Search compared to Full WHOIS. This is expected behavior, not a bug

## What you can achieve with Domain Search

- Discover attacker infrastructure **before** it’s used in campaigns
- Detect brand impersonation and typosquatting domains
- Track when domains first appeared or last changed
- Find domains linked to specific name servers, mail servers, ASNs, or networks
- Search using custom regex patterns or detailed WHOIS information
- Get rich metadata for fast analysis and pivoting

> [!NOTE]
> Tip
> 
> For the best experience with clean, visually rich results (instead of raw JSON), just use Web Search>Type your domain query directly in Web Search — you’ll get the same powerful data presented in a much more readable format.

## Use Domain Search

### Option 1 – Recommended (Web Search)

Go to **Web Search** and run your query there for the cleanest, most user-friendly results.

### Option 2 – Advanced Query Builder

1. From the left menu, go to **Advanced Query Builder → Domain Queries → Search**
2. Use the **Simple Query** tab for most searches, or switch to **Advanced Query** for full control.
3. Enter your criteria:
  - **Domain** (required) or **domain_regex**
  - **nsname** or **mxname** (wildcards supported)
  - **first_seen** / **last_seen** ranges with Strict/Any mode
  - **asnum**, **asname**, or **network** (semi-colon separated)
  - Any other optional filters (registrar, email, cert dates, etc.)
4. Click **Search**
5. (Optional) Switch to **Table View** or click **Explore** for deeper analysis.

## Save Query

Want to reuse a search later?

1. Set your parameters and click **Save Query**
2. Give it a **Name** and **Description**
3. The query will be saved under **Private Queries**