# Run Instant Lookups

Run a real-time Whois, DNS, SSL, Webdata, Technology, Screenshot or Port Scanner lookup on one domain or IP address, read the parsed or raw result, and open its Whois or DNS history.

Source: https://docs.deepinfo.com/guide/dsi/instant-lookup/

Last updated: 2026-09-26

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Instant Lookup queries one target in real time: its registration (Whois), DNS records, certificate (SSL),
website data, technologies, a screenshot, or a port scan. Use it when you need the current answer for a single
domain or IP address, rather than a search across Deepinfo's data.

## Before You Start

- **Package:** each lookup type is part of your package separately. A type that is not included says so in its
  tab.
- **Role:** Admin or Member.

## Where to Find It

**Sidebar:** **DEEP SEARCH & INSIGHTS** › **INSTANT LOOKUP** · [https://platform.deepinfo.com/app/dsi/instant-lookup](https://platform.deepinfo.com/app/dsi/instant-lookup)

The breadcrumb reads **DSI / INSTANT LOOKUP**. Each lookup runs in a page tab named after its type, for example
**Whois Lookup**; see
[Page tabs](/guide/dsi/#page-tabs-in-domain-search-vulnerability-search-and-instant-lookup).

## The Lookup Types

Pick a type with the **+** button above the page (it opens a new tab) or with the type switcher at the start of
the input (it changes the current tab).

| Type | What to enter | Advanced options |
|---|---|---|
| **Whois Lookup** | A domain name or an IP address | None |
| **DNS Lookup** | A domain name or subdomain | The DNS record types to query |
| **SSL Lookup** | A domain name or an IP address | **PORT** and **PROXY** |
| **Webdata Lookup** | A domain name or a URL | **PROXY** |
| **Technology Lookup** | A domain name or an IP address | None |
| **Screenshot Lookup** | A domain name or an IP address | Page, image and browser options |
| **Port Scanner Lookup** | A domain name or an IP address | Scan mode and ports |

![The + menu with the lookup types.](/img/guide/dsi/instant-lookup-01.png)

## Run a Lookup

1. Choose the lookup type.
2. Type the target in the input.
3. Optional: select **SHOW ADVANCED OPTIONS** and set the options (see below).
4. Select **LOOKUP**.

Some lookups take a while; a Whois lookup can take close to a minute. The button shows a spinner meanwhile.
After a result, **LOOKUP** stays unavailable until you change the input.

> [!WARNING]
> When you switch the lookup type, the input is filled again with the last target you looked up, even if you had
> cleared it. Check the target before you select **LOOKUP**. Run **Port Scanner Lookup** only against hosts you
> own or are allowed to scan.

## Advanced Options

- **DNS Lookup** (**PARAMETERS**): tick the **DNS Types** to query. You can select up to 5 types per request.
  **SELECT DEFAULT ONES** picks A, TXT, MX, NS and CNAME; **UNSELECT ALL** clears the list.
- **SSL Lookup** (**PARAMETERS**): **PORT** (443 unless you set another) and **PROXY** (the address of a proxy
  to connect through). **CLEAR PARAMETERS** empties both.
- **Port Scanner Lookup**: **Light Mode** or **Full Mode**, and **PORTS**: **TCP & UDP Ports**, **TCP Ports**,
  **UDP Ports** or **Custom Ports**.
- **Screenshot Lookup**:
  - checkboxes such as **Full page screenshot**, **Lazy loading**, **Block Ads**, **No cookie banners**,
    **Disable Javascript**, **Retina**, **Mobile**, **Landscape** and **Touchscreen**;
  - **Export Image Options**: **DOCUMENT TYPE**, **IMAGE QUALITY** and **THUMBNAIL**;
  - **Browser Options**: **BROWSER SIZE WIDTH**, **BROWSER SIZE HEIGHT**, **SCALE**, **DELAY**, **TIMEOUT** and
    more;
  - **SEE ALL** adds **HTML Options**, such as the element to capture, headers, cookies, the user agent, a proxy,
    injected CSS and a location; **HIDE** folds them away.

## Read the Result

![A Whois lookup result in the parsed view, with RAW, CHECK HISTORICAL WHOIS RECORDS and EXPORT in the result header.](/img/guide/dsi/instant-lookup-02.png)

The result header shows the target, the kind of record (for example **Whois Record**), and:

- **RAW** and **PARSED**: switch between the raw data and a readable layout.
- **CHECK HISTORICAL WHOIS RECORDS** (Whois) or **CHECK HISTORICAL DNS RECORDS** (DNS): open a drawer with the
  stored history, for example **Historical Whois Records** with the number of records found and their dates.
  SSL results have no history button.
- **EXPORT**: save the result as a file.

What each result contains:

| Type | Result |
|---|---|
| **Whois Lookup** | The registration dates, name servers, status and registrar, and the **Registrant** block |
| **DNS Lookup** | One table per record type, for example **A Records**, **MX Records** (with **PRIORITY**), **NS Records** and **TXT Records**. A type with no record shows **No Result Found.** |
| **SSL Lookup** | **Details** (including the **SAN LIST**), **Fingerprint** (including the **PUBLIC KEY**), **Signature** (including **VALID**) and **Extensions** |

## Good to Know

- An instant lookup asks for the current data at the moment you run it. Domain Search and the domain details
  show the data Deepinfo has already collected; see [Search domains](/guide/dsi/domain-search/).
- Your lookup tabs and the last result are kept in this browser for your user, so they are still there after a
  reload. Close a tab to remove it.

## Do This With the API

- Whois: [Domain WHOIS](/reference/lookup/domain-whois/), [IP WHOIS](/reference/lookup/ip-whois/)
- DNS: [DNS](/reference/lookup/dns/)
- SSL: [SSL](/reference/lookup/ssl/)
- Webdata: [Web Data](/reference/lookup/web-data/)
- Technology: [Technology](/reference/lookup/technology/)
- Screenshot: [Screenshot](/reference/lookup/screenshot/)
- Port scan: [Port Scan](/reference/lookup/port-scan/)
- History: [WHOIS History](/reference/lookup/whois-history/), [DNS History](/reference/lookup/dns-history/)