# Real-Time Newly Discovered Subdomains

URL: https://www.deepinfo.com/data-api/feeds/real-time-newly-discovered-subdomains-stream/

## Catch New Subdomains Under Your Name as Discovery Finds Them.

The public API has no stream of real-time newly discovered subdomains: it delivers new subdomains as a daily file. On your domains, External Attack Surface Management runs discovery continuously and can notify your team when it finds a new asset. For anything wider, talk to our data team.

[Talk to our data team](https://www.deepinfo.com/contact/?topic=data-api) [Daily discovered subdomains](https://www.deepinfo.com/data-api/feeds/daily-discovered-subdomains/)

### Discovery That Keeps Running on Your Domains.

Asset Discovery starts from your seed domains and proposes the subdomains and IP addresses it finds for your team to approve. A notification rule on `new_asset_discovered` tells your team as soon as there is something new, or in a digest.

[Asset Discovery](https://www.deepinfo.com/platform/easm/smart-asset-discovery/)

### Pick a Route to New Subdomains by Scope.

#### [Your Domains, Continuously](https://www.deepinfo.com/platform/easm/smart-asset-discovery/)

EASM discovery with a review queue, notifications on new assets and continuous scanning once approved.

#### [The Whole Index, Next Day](https://www.deepinfo.com/data-api/feeds/daily-discovered-subdomains/)

All subdomains Deepinfo discovered in the last day, as one CSV or JSON file.

#### [One Domain, on Demand](https://www.deepinfo.com/data-api/apis/subdomain-finder/)

All known subdomains of a domain, as full records, whenever you call it.

#### [Anything Else](https://www.deepinfo.com/contact/)

Tell our data team what your pipeline needs, and they tell you what can be provided.

### What Our Data Team Asks First.

#### Which names

All new subdomains in the index, or only those under a list of apex domains.

#### How fast

How quickly your pipeline needs to see a new hostname, and why a daily file is not enough.

#### Where to

How your team loads data today, so the delivery fits the systems you already run.

### Where New Hostnames Already Reach You.

- [Daily Discovered Subdomains](https://www.deepinfo.com/data-api/feeds/daily-discovered-subdomains/) (Daily file): Subdomains Deepinfo discovered in the last day.
- [Asset Discovery](https://www.deepinfo.com/platform/easm/smart-asset-discovery/) (EASM): From one seed domain to a reviewed inventory.
- [Attack surface management](https://www.deepinfo.com/solutions/use-cases/attack-surface-management/) (Use case): Keep the inventory in step with what is online.

### Questions About Real-Time Newly Discovered Subdomains

**Is there a streaming or webhook endpoint for new subdomains?**

Not in the public API. New subdomains are delivered as a daily file through [Daily Discovered Subdomains](https://www.deepinfo.com/data-api/feeds/daily-discovered-subdomains/). For other needs, [talk to our data team](https://www.deepinfo.com/contact/).

**What does the daily file cover?**

Each subdomain new to the index in the last day, counted back from the `file_update_time` in the response, as CSV or JSON through a download link valid for one hour.

**Does “discovered” mean the subdomain is new on the internet?**

Not necessarily. It means new to Deepinfo’s index. A host can run for a while before it is first observed.

**Can discovery approve new assets automatically?**

Yes. Custom discovery rules are filters over the global domain data, and a rule can either propose assets for review or approve them automatically.

**How is the daily file priced?**

Data feeds are priced on their own, by volume and frequency, separately from the platform. See [Data & API pricing](https://www.deepinfo.com/pricing/#data-pricing).

### See What Appears Under Your Domains.

Book a walk-through of discovery on your own domains, or talk to our data team about your pipeline.

[Request demo](https://www.deepinfo.com/request-demo/) [Talk to our data team](https://www.deepinfo.com/contact/?topic=data-api)