---
title: "The UK SMS Guideline"
slug: "uk-sms-guideline"
updated: 2026-06-12T16:47:03Z
published: 2026-06-12T16:47:03Z
canonical: "academy.insiderone.com/uk-sms-guideline"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://academy.insiderone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The UK SMS Guideline

You can refer to the United Kingdom SMS guidelines to assist you during onboarding.

| Locale Name | ISO Code | Region | Dialing Code | Sender ID Type(s) |
| --- | --- | --- | --- | --- |
| United Kingdom | GB | Europe | +44 | Alphanumeric |

## Transactional Routes

SenderID approval processes are the same for transactional routes to use the [SMS transactional API](/v1/docs/send-transactional-sms).