Get Phone by LID

Convert a WhatsApp LID to its corresponding phone number.

GET

https://api.wawp.net/v2/lids/{lid}?access_token=123456789&instance_id=123456789&lid=1234567890%40lid

Authentication Required

Login to swap the placeholders with your real Instance ID and Access Token.

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Test /v2/lids/{lid} endpoint

Supports

GET

No query parameters required

This endpoint doesn't expect data in the URL.

Architecture

LID (Ledger ID) is a privacy-preserving identifier.

Usage

Required for some advanced features like username lookup.

Best practices

Store mapping of LID to Phone Number (PN) securely.
Use LIDs internally if you plan to support PNH (Phone Number Hiding).

Unmasking the Identity: LID to Phone

The /v2/lids/{lid} endpoint performs a reverse lookup, attempting to find the canonical phone number (@c.us) associated with a given Lookup ID.

🔒 Privacy Barriers

A common misconception is that this endpoint can "dox" any user. It cannot.

Success: The API returns the phone number only if your account has already established a trust relationship with that user (e.g., they are in your contacts, or you share a group where numbers are visible).
Failure: If the user is a stranger in a hidden community, this endpoint will likely return null or the same LID, because the phone number is cryptographically sealed from your view.

🛠️ Use Case: "One Identity"

If you support users moving across phone numbers:

Storage: You store the LID as the user's primary key.
Display: When you need to send an SMS fallback, you call this endpoint.
Result: You get the current phone number associated with that LID, ensuring your SMS goes to the right device.

Request Parameters

Configure the parameters required to interact with this endpoint. All query and body arguments are listed below with their details.

URL Parameters

Passed in the URL query string

	`string`		Your unique WhatsApp Instance ID Example:
	`string`		Your API Access Token Example:
	`string`		The unique LID (@lid) Example:

Request Samples

Use these ready-to-go code snippets to integrate our API into your project quickly and efficiently. Choose your preferred language and library.

1const baseUrl = "https://api.wawp.net";
2const endpoint = "/v2/lids/1234567890@lid";
3const params = new URLSearchParams({
4  "instance_id": "123456789",
5  "access_token": "123456789"
6}).toString();
7
8
9fetch(`${baseUrl}${endpoint}${params ? '?' + params : ''}`, {
10  method: "GET",
11  headers: { "Content-Type": "application/json" },
12  
13})
14  .then(async (response) => {
15    if (response.ok) {
16      const data = await response.json();
17      console.log("Success:", data);
18      return data;
19    }
20    
21    // Error Handling
22    if (response.status === 400) {
23      console.error("Error 400: Bad Request - Missing Required Parameter(s)");
24    }
25    if (response.status === 400) {
26      console.error("Error 400: Bad Request (XML Format)");
27    }
28    if (response.status === 400) {
29      console.error("Error 400: Bad Request (Plain Text)");
30    }
31    if (response.status === 401) {
32      console.error("Error 401: Unauthorized - Invalid or Missing Access Token");
33    }
34    if (response.status === 401) {
35      console.error("Error 401: Unauthorized (XML Format)");
36    }
37    if (response.status === 404) {
38      console.error("Error 404: Not Found - Session Does Not Exist");
39    }
40    if (response.status === 404) {
41      console.error("Error 404: Not Found (XML Format)");
42    }
43    if (response.status === 500) {
44      console.error("Error 500: Internal Server Error - Unexpected Failure");
45    }
46    if (response.status === 500) {
47      console.error("Error 500: Internal Server Error (HTML)");
48    }
49    if (response.status === 502) {
50      console.error("Error 502: Bad Gateway - Connection Failed to Upstream");
51    }
52    if (response.status === 502) {
53      console.error("Error 502: Bad Gateway (XML Format)");
54    }
55
56    const errorText = await response.text();
57    console.error(`Error ${response.status}: ${errorText}`);
58  })
59  .catch((error) => console.error("Network Error:", error));

Interactive SamplesUTF-8

Ln 59, Col 1javascript

Expected Responses

Explore all possible responses and outcomes from the server. We have documented each status code with data examples to make success and error handling easier.

Phone number found

4 Variants

Type:

Scenario:

application/json

string *

Example

{
"lid": "1234567890@lid",
"number": "201234567890"
}

Bad Request - Missing Required Parameter(s)

3 Variants

Unauthorized - Invalid or Missing Access Token

2 Variants

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