---
title: "How to use Domain Age"
url: "https://lookvalid.com/help/products/domain-age.md"
canonical_url: "https://lookvalid.com/help/products/domain-age"
last_updated: "2026-10-22"
type: "how-to"
summary: "What Domain Age takes in, which fields it returns and how credits are charged for each lookup."
related: ["https://lookvalid.com/help/products/domain-authority.md", "https://lookvalid.com/help/products/website-scraper.md", "https://lookvalid.com/help/products/website-contacts-scraper.md", "https://lookvalid.com/help/billing/plans-and-credits.md"]
---

# How to use Domain Age

What Domain Age takes in, which fields it returns and how credits are charged for each lookup.

## What it does

Registration, last update and expiry dates, registrar and age in days for a domain, from the registry's public RDAP service.

## What you send

Send these fields in the JSON body of the request.

Request fields for Domain Age

| Field | Type | Required | Limits |
| --- | --- | --- | --- |
| domain | string | Required | up to 2,048 characters |

## What you get back

The `data` object of a successful response carries these fields. Every response also lists its `sources`, the `credits_charged` and whether it was a `cache_hit`.

Response fields for Domain Age

| Field | Type | Meaning |
| --- | --- | --- |
| domain | string | The domain as queried, lowercase ASCII (punycode for internationalized names) |
| registered | boolean |  |
| created_at | string | ISO 8601 registration time; null when the registry does not publish it |
| age_days | integer or null | Whole days from registration to cache.cached_at (when this answer was computed; a cached answer is not recomputed); null when created_at is null |
| updated_at | string |  |
| expires_at | string |  |
| registrar | string |  |
| status | list | EPP/RDAP status codes such as "client transfer prohibited" |
| rdap_server | string | Base URL of the RDAP server that answered |

## What it costs

2 credits per registered domain (unregistered domains are free).

What each outcome costs

| Case | Charge |
| --- | --- |
| Found | 2 credits |
| Nothing found | 0 credits |
| Repeat inside 7 days | 0 credits |
| Errors and invalid requests | 0 credits |

## Run it

You can try it without an account in the [free tool](https://lookvalid.com/tools.md). The free tools share a limit per visitor.

From code, send a POST request to `https://YOUR_API_HOST/v1/domain-age` with your API key.

A request to Domain Age

```bash
curl -X POST https://YOUR_API_HOST/v1/domain-age \
  -H "Authorization: Bearer $LOOKVALID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domain":"example.com"}'
```

Full parameters and response fields are in the [API reference](https://lookvalid.com/docs/api/domain-age.md). To run a list of values, use a [bulk CSV job](https://lookvalid.com/help/api/bulk-csv-jobs.md).

## Good to know

- A repeat of the same lookup within 7 days is served from your cache and costs 0 credits.
- When the lookup finds nothing it returns `found: false` and costs 0 credits.
- Invalid input and errors are never charged.
- The API allows 200 requests per 10 seconds per key.

## Related

- [How to use Domain Authority](https://lookvalid.com/help/products/domain-authority.md)
- [How to use Website Scraper](https://lookvalid.com/help/products/website-scraper.md)
- [How to use Website Contacts Scraper](https://lookvalid.com/help/products/website-contacts-scraper.md)
- [Plans, credits and how they are spent](https://lookvalid.com/help/billing/plans-and-credits.md)