# Table of contents:

• Introduction
• Client/Request
• Server/Response
• Examples
  • Number does not have a associated user handle
  • Number has an associated user handle
  • Number is invalid
• Known changes

# Introduction

LKP is a command introduced in MSNP12.

It is a Notification Server command, without either a request or response payload.

Looks up if a mobile number has an user handle for migration.

# Client/Request

LKP TrID mobile-address

Where mobile-address is a user handle for a telephone (tel: URI).

# Server/Response

LKP TrID mobile-address {user-handle}

Where mobile-address is a user handle for a telephone (tel: URI).

Where user-handle is the user handle to use for migration.

# Examples

# Number does not have a associated user handle

C: LKP 1 tel:+15551111222
S: LKP 1 tel:+15551111222

# Number has an associated user handle

C: LKP 2 tel:+15551111222
S: LKP 2 tel:+15551111222 5551111222@mobile.example.com

# Number is invalid

C: LKP 3 tel:+5551111222
S: 232 3

# Known changes

None.