ExpiredNames.net — Expired Domain Intelligence

Back to API Keys

API Documentation

Comprehensive guide to integrating the ExpiredNames.net API into your applications.

Authentication

The API uses API keys to authenticate requests. You can view and manage your API keys in the API Keys Dashboard.

You must pass your API key via the Authorization header as a Bearer token or via the X-API-Key header.

# Option 1: Bearer Token (Recommended)

Authorization: Bearer YOUR_API_KEY

# Option 2: X-API-Key Header

X-API-Key: YOUR_API_KEY

Security Note: Never share your secret keys. Do not commit them to GitHub or expose them in client-side code.

Bulk Auction Lookup

The bulk lookup endpoint allows you to instantly check the auction status, current price, and bidder count of up to thousands of domain names in a single lightning-fast request.

POST/api/auctions/lookup

Request Body (JSON)

{ "domains": [ "tessify.com", "chennaitours.com", "example.net" ] }

Response (JSON)

{ "auctions": [ { "domain": "chennaitours.com", "providerSlug": "namesilo", "providerName": "NameSilo", "price": 12, "bidCount": 0, "numberOfBidders": 0, "endDate": "2026-09-15T14:30:00.000Z", "sourceUrl": "/out?url=...", "recordType": "closeout", "status": "active" } ] }

Example cURL Request

curl -X POST https://expirednames.net/api/auctions/lookup \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"domains":["chennaitours.com","tessify.com"]}'

Search Auctions

The search endpoint allows you to programmatically query the entire active auction database using advanced filters like keywords, price, length, and providers.

POST/api/auctions/search

Request Body (JSON)

{ "keyword": "crypto", // (string) "tlds": ["com", "net"], // (array) "providers": ["namesilo"], // (array) "minPrice": 10, // (number) "maxPrice": 500, // (number) "minLength": 4, // (number) "maxLength": 10, // (number) "page": 1, // (number) "limit": 100 // (number) }

Response (JSON)

{ "pagination": { "page": 1, "limit": 100, "total": 342, "totalPages": 4 }, "auctions": [ { "domain": "cryptotrade.com", "providerSlug": "namesilo", "price": 45, // ... (same as lookup) } ] }

Example cURL Request

curl -X POST https://expirednames.net/api/auctions/search \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"keyword":"app","tlds":["com"],"maxPrice":50}'

Bulk Daily Registration Lookup

The lookup endpoint allows you to pass an array of domain names and returns detailed information about those domains if they appear in our daily registrations database.

POST/api/daily-registrations/lookup

Request Body (JSON)

{ "domains": [ "example.com", "testdomain.net" ] }

Response (JSON)

{ "registrations": [ { "domain": "example.com", "tld": "com", "sldLength": 7, "registrar": "GoDaddy", "ns1": "ns1.example.com", "ns2": "ns2.example.com", "createDate": "2024-03-20T10:00:00.000Z", "recordType": "ADD", "status": "clientTransferProhibited", "expiryDate": "2025-03-20T10:00:00.000Z" } ] }

Example cURL Request

curl -X POST https://expirednames.net/api/daily-registrations/lookup \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"domains":["example.com","testdomain.net"]}'

Search Daily Registrations

The search endpoint allows you to programmatically query the daily registered domains database using advanced filters like keywords, length, and TLDs.

POST/api/daily-registrations/search

Request Body (JSON)

{ "keyword": "crypto", // (string) "tlds": ["com", "net"], // (array) "minLength": 4, // (number) "maxLength": 10, // (number) "registrar": "namesilo", // (string) "recordType": "ADD", // (string) "page": 1, // (number) "limit": 100 // (number) }

Response (JSON)

{ "pagination": { "page": 1, "limit": 100, "total": 342, "totalPages": 4 }, "registrations": [ { "domain": "example.com", "tld": "com", "sldLength": 7, // ... (same as lookup) } ] }

Example cURL Request

curl -X POST https://expirednames.net/api/daily-registrations/search \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"keyword":"crypto","tlds":["com"],"recordType":"ADD"}'

Pro Feature

Keyword Trends Historical

Retrieve historical daily registration volume for specific keywords. Perfect for plotting momentum charts and spotting emerging niches before they go mainstream.

GET/api/trends/historical

Query Parameters

Parameter	Required	Description
term	Yes	Keyword to analyze (e.g. "crypto")
tld	No	Target database. Default: "com"
days	No	Historical window. Default: 30

Response (JSON)

{ "term": "crypto", "tld": "com", "data": [ { "date": "2026-08-15", "count": 412 }, { "date": "2026-08-16", "count": 489 } ] }

Example cURL Request

curl -X GET "https://expirednames.net/api/trends/historical?term=crypto&tld=com&days=30" \
-H "Authorization: Bearer YOUR_API_KEY"

Rate Limits & Quotas

API limits are dictated by your active subscription plan. Exceeding these limits will result in a 403 Forbidden or 429 Too Many Requests response.

Feature	Free	Lite	Pro	Agency/Dev	Enterprise
API Access	No	No	Yes	Yes	Yes
Domains / Request	N/A	N/A	100	500	Custom
Daily Requests	N/A	N/A	1,000	3,000	Custom
Max Domains / Month	N/A	N/A	2,500,000	30,000,000	Custom
Rate Limit (per min)	N/A	N/A	30	60	Custom
API Keys	N/A	N/A	1	3	Custom
Concurrent Requests / Sec	N/A	N/A	2	5	Custom

Contents

Authentication

Bulk Auction Lookup

Request Body (JSON)

Response (JSON)

Example cURL Request

Search Auctions

Request Body (JSON)

Response (JSON)

Example cURL Request

Bulk Daily Registration Lookup

Request Body (JSON)

Response (JSON)

Example cURL Request

Search Daily Registrations

Request Body (JSON)

Response (JSON)

Example cURL Request

Keyword Trends Historical

Query Parameters

Response (JSON)

Example cURL Request

Rate Limits & Quotas