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Extension API

by Extension

The Vonage Business Cloud Extension API enables you to retrieve information about extensions. Your application must subscribe to the Provisioning API suite to use this API.

payments

Quick Reference

Base URL https://api.vonage.com/t/vbc.prod/provisioning Auth type Bearer Token Auth header Authorization: Bearer YOUR_TOKEN Rate limit Based on plan Pricing Enterprise / contact sales Free quota None Documentation https://api.apis.guru/v2/specs/vonage.com:extension/1.11.8.json Endpoint status Server online — HTTP 404 — server is online but path returned an error (may require auth)2.04s (checked Mar 29, 2026) Builder score D 28% builder-friendly
Pricing
28
Latency
20
Depth
34

Authentication

Bearer token in the Authorization header

Authorization: Bearer YOUR_TOKEN

Pricing

Model subscription Starting price Enterprise / contact sales Free quota None

Paid. API extension service; pricing varies by provider.

Key Endpoints

MethodPathDescription
GET /api/accounts/{account_id}/extensions Get account extensions data by account ID
GET /api/accounts/{account_id}/extensions/{extension_number} Get extension data by account ID and extension number

Sample Request

curl 'https://api.vonage.com/t/vbc.prod/provisioning/api/accounts/{account_id}/extensions' \
  -H 'Authorization: Bearer YOUR_TOKEN'

Sample Response

{}

Data sourced from API Map. Always verify pricing and rate limits against the official Extension documentation.