- From: Fuqiao Xue via GitHub <noreply@w3.org>
- Date: Tue, 28 Oct 2025 13:37:34 +0000
- To: public-i18n-archive@w3.org
Some information: E.164 provides a universal structure for all telephone numbers, ensuring each one is unique worldwide. The E.164 format dictates that a complete international phone number should consist of a plus sign (+), followed by a country code, a national destination code (often called an area code), and a subscriber number. The total length of an E.164 number is limited to a maximum of 15 digits. ### The Anatomy of a Phone Number **1. Country Calling Codes:** These codes can be one, two, or three digits long. For example: * **+1:** United States and Canada * **+44:** United Kingdom * **+234:** Nigeria The initial digit of the country code often corresponds to a geographical region. For instance, codes starting with +2 are generally for African countries, while +3 and +4 are primarily for Europe. **2. Area Codes:** Within each country, the numbering plan is further broken down by area codes. These codes specify a geographic region within a country. The length and format of area codes vary significantly. **3. Final part of the phone number:** Identify a specific telephone line within a local exchange. The length of the final part also varies widely depending on the country's numbering plan. ### Special Numbers There is no universal emergency number. While many travelers are familiar with "911" from the United States and Canada, this is not the standard everywhere. Toll-free numbers, which are free for the caller to dial, also have different formats globally. A toll-free number in one country is generally not free to call from another. ### HTML The HTML `<input type="tel">` doesn't enforce any specific validation on its own. It offers a crucial advantage on mobile devices: it typically brings up a numeric keypad, making it easier for users to enter their phone number. -- GitHub Notification of comment by xfq Please view or discuss this issue at https://github.com/w3c/i18n-drafts/issues/786#issuecomment-3456513377 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 28 October 2025 13:37:35 UTC