Domain Age API | LookValid

Domain Age

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

Get API key Read the docs

POST/v1/domain-age

1curl -X POST https://YOUR_API_HOST/v1/domain-age \
2  -H "Authorization: Bearer $LOOKVALID_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{"domain":"example.com"}'

Read docs

POST/v1/domain-age

1const response = await fetch("https://YOUR_API_HOST/v1/domain-age", {
2  method: "POST",
3  headers: {
4    Authorization: `Bearer ${process.env.LOOKVALID_API_KEY}`,
5    "Content-Type": "application/json",
6  },
7  body: JSON.stringify({
8    "domain": "example.com"
9  }),
10});
11const result = await response.json();
12console.log(result.found, result.data);

Read docs

POST/v1/domain-age

1import os
2import requests
3
4response = requests.post(
5    "https://YOUR_API_HOST/v1/domain-age",
6    headers={"Authorization": f"Bearer {os.environ['LOOKVALID_API_KEY']}"},
7    json={
8        "domain": "example.com"
9    },
10)
11result = response.json()
12print(result["found"], result["data"])

Read docs

200Captured example, 2026-10-18

1{
2  "product": "domain-age",
3  "found": true,
4  "data": {
5    "domain": "example.com",
6    "registered": true,
7    "created_at": "1995-08-14T04:00:00.000Z",
8    "age_days": 11387,
9    "updated_at": "2026-08-14T08:01:43.000Z",
10    "expires_at": "2027-08-13T04:00:00.000Z",
11    "registrar": "RESERVED-Internet Assigned Numbers Authority",
12    "status": [
13      "client delete prohibited",
14      "client transfer prohibited",
15      "client update prohibited"
16    ],
17    "rdap_server": "https://rdap.verisign.com/com/v1/"
18  },
19  "sources": [
20    "RDAP from the registry (https://rdap.verisign.com/com/v1/), found through the IANA RDAP bootstrap file"
21  ]
22}

A real run of this lookup on 2026-10-18, using a public input. The envelope fields are left out.Read docs

2 credits per registered domain (unregistered domains are free)
Charged only when it finds something
Cached 7 days

2 credits per registered domain (unregistered domains are free)

Charged only when it finds something. A repeat inside 7 days is free.

Every LookValid product draws on one shared balance. See pricing.

From key to answer in three steps

One key, one POST to /v1/domain-age and a JSON answer back. The same three steps work in any language that can send HTTPS.

01
Create a key
Sign up and copy a key from the dashboard. The same key works for every LookValid product and for the MCP server.
Terminal
```
export LOOKVALID_API_KEY="lv_live_..."
```

Send the request

POST a JSON body to /v1/domain-age. 2 credits per registered domain (unregistered domains are free).

request.sh

1curl -X POST https://YOUR_API_HOST/v1/domain-age \
2  -H "Authorization: Bearer $LOOKVALID_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{"domain":"example.com"}'

Read the answer

A real run of this lookup on 2026-10-18. The data object has 9 named fields.

response.json

1{
2  "product": "domain-age",
3  "found": true,
4  "data": {
5    "domain": "example.com",
6    "registered": true,
7    "created_at": "1995-08-14T04:00:00.000Z",
8    "age_days": 11387,
9    "updated_at": "2026-08-14T08:01:43.000Z",
10    "expires_at": "2027-08-13T04:00:00.000Z",
11    "registrar": "RESERVED-Internet Assigned Numbers Authority",
12    "status": [
13      "client delete prohibited",
14      "client transfer prohibited",
15      "client update prohibited"
16  ...

A structured answer, not a page of text

The data object has 9 named fields. Every response also lists the sources behind the result, the credits charged and whether it was served from your cache.

Fields returned in data by Domain Age
Field Type
domain string
registered true
created_at string or null
age_days integer or null
updated_at string or null
And 4 more fields in the API reference.
Named fields. Every field is listed in the API reference.
1. Your requestone API key
2. Your cache7 daysRepeat: 0 credits
3. Data sourcefirst lookupFound: 2 credits
4. ResultJSON
A repeat lookup is free. Results are cached per account for 7 days. Ask the same question again inside that window and the response comes back with cache_hit: true and no charge.
Terminal
```
# Sent with every request, for every product
Authorization: Bearer $LOOKVALID_API_KEY
```
One key for your code and your agents. Send your API key as a Bearer token. The same key and the same credit balance cover every other LookValid product. AI agents can call it as a tool on the MCP server at https://YOUR_API_HOST/v1/mcp.

Fields returned in data by Domain Age
Field	Type
domain	string
registered	true
created_at	string or null
age_days	integer or null
updated_at	string or null

named fields in every answer

days a repeat lookup is free

lookups on the same key and balance

Latest from the changelog

All changes

Priced in credits

Every LookValid product draws on one shared balance. Domain Age uses 2 credits per registered domain (unregistered domains are free).

See pricing Get API key

Cost

2credits

Per registered domain (unregistered domains are free)

Found2 credits
Nothing found0 credits
Repeat inside 7 days0 credits
Errors and invalid requests0 credits

Questions about Domain Age

01How much does Domain Age cost?

2 credits per registered domain (unregistered domains are free). Credits come out of the one balance shared by every LookValid product.

02Am I charged when nothing is found?

No. When the lookup runs and finds nothing, it returns found: false and costs 0 credits. An error costs nothing either.

03How long are results cached?

For 7 days, per account. Repeating the same lookup inside that window returns cache_hit: true and costs 0 credits.

04Which API key do I use?

The same key as every other product. Send it as a Bearer token in the Authorization header. Email hello@lookvalid.com and we set up your account and send the key.

Domain Age

Create a key

Send the request

Read the answer

Priced in credits

Questions about Domain Age

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