---
title: "WHOIS Search"
slug: "whois-search"
updated: 2025-12-31T16:51:44Z
published: 2025-12-31T16:51:44Z
canonical: "help.silentpush.com/whois-search"
---

> ## 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.

# WHOIS Search

Silent Push performs a comprehensive WHOIS Search to extract, enrich, and correlate registrar-based ownership data for domains observed globally. This process aids SOC teams and security analysts in infrastructure mapping, threat actor attribution, and campaign tracking.

## What We Collect

**Registrant Name & Email:** Enables identification of individual or organizational ownership.

**Registrar Information:** Tracks registration through known registrars, especially those commonly used in abuse.

**Domain Creation, Update, and Expiry Dates:** Vital for identifying domain age, renewal behaviors, and suspicious time-based patterns.

**WHOIS Server:** Useful for source tracing and validation.

**Nameservers:** Allows detection of shared infrastructure and DNS hosting patterns.

**Organization & Address Info:** Additional signals for corporate vs. individual ownership.

## Use WHOIS Search

To investigate domain ownership and registration patterns:

1. From the Silent Push homepage, select **WHOIS Data** > **WHOIS Search**.
2. Build Your Query:
  - In **Field Name**, type or select a WHOIS field (e.g., name, email, created, etc.).
  - Choose an **Operator** (equals, !=, contains, >, <, etc.).
  - Enter the **Value**.
  - Optionally add multiple conditions using **.
3. Click **Search**.

## Results Table

| Result Type | Description |
| --- | --- |
| scan_date | Date/time of the WHOIS scan. |
| domain | Queried domain name. |
| created | Original domain registration date/time. |
| expires | Expiry date unless renewed. |
| name | Registered owner name. |
| organization | Associated organization. |
| registrar | Registrar name. |
| zipcode | Owner’s zip/postal code. |
| state | Owner's registered state. |
| updated | Last modification of WHOIS details. |
| nshash | Hash of the nameserver value. |
| nameserver | Nameserver used to link to the hosting IP. |
| email | Registered email address. |
| country | Registered country. |
| address | Street address. |
| city | Registered city. |

## Manage Results

| Feature | Function |
| --- | --- |
| Select All | Bulk-select results. |
| Copy | Copy selected/visible records. |
| Export | Export current or selected data. |
| Filter | Customize visible columns. |
| Basic Raw Data | Download results in JSON format. |
| Compare | Compare any two records. |
| Save | Save search for reuse. |

### Hunting Example – Lumma Stealer

Use WHOIS pivots to trace threat actor patterns. Investigate a suspicious domain like:

```plaintext
 elephancouped[.]fun
```

- **PADNS tab**: Identifies ASN = 13335 (Cloudflare) ![image.png](https://cdn.document360.io/8e5460b3-9d96-4b01-8bb3-6591a4af3a8c/Images/Documentation/image%2828%29.png)
- **WHOIS tab**: reveals registrant: Klim Puzharskiy ![image.png](https://cdn.document360.io/8e5460b3-9d96-4b01-8bb3-6591a4af3a8c/Images/Documentation/image%2829%29.png)
- Search Klim Puzharskiy via WHOIS Search → 51 linked domains.
  - Common traits: .fun TLD, same registrar (PDR), same registration time. ![image.png](https://cdn.document360.io/8e5460b3-9d96-4b01-8bb3-6591a4af3a8c/Images/Documentation/image%2830%29.png)

### Advanced Query Example

To investigate using the **Advanced Search** function:

1. From the left navigation menu, select **Web Data > Web Search > WHOIS Scan**.
2. Select the **Advanced Search**tab**.**
  1. Common attributes for precise fingerprinting include the .fun TLD, the same registrar (PDR), the same registration time, nameserver information, and the use of wildcards.

```plaintext
datasource = "whois" AND created > "2025-02-21 09:36:40" AND registrar = "PDR Ltd. d/b/a PublicDomainRegistry.com" AND nameserver = "*.ns.cloudflare.com" AND domain = "*.fun"
```

### Additional Pivots

- **Email field**: Search for domains linked to `*@inbox.eu`
- **Name pattern regex**: Use `name ~= "^[A-Z][a-z]+ [A-Z][a-z]+$"` to identify domains with similar name patterns.

## Advanced Query with Multiple Attributes

```plaintext
datasource = "whois" AND created > "2025-02-21 09:36:40" AND registrar = "PDR Ltd. d/b/a PublicDomainRegistry.com" AND nameserver = "*.ns.cloudflare.com" AND domain = "*.fun" AND email = "*@inbox.eu" AND name ~= "^[A-Z][a-z]+ [A-Z][a-z]+$"
```

### Benefits

Silent Push’s WHOIS-based pivots enable users to:

- Trace threat actor infrastructure despite DNS/hosting obfuscation.
- Identify campaign clusters using registrar, time, email, and other metadata.
- Enhance threat attribution when DNS or SSL data is insufficient.

A tool that queries the WHOIS protocol on TCP port 43 to retrieve domain registration details, enabling analysis of ownership, registrar, and other metadata for threat intelligence.