0800 vs 00800 Numbers: UK Companies

TL;DR

Yes, 0800 and 00800 numbers can absolutely be from different companies in the UK. They serve different purposes and have distinct routing mechanisms.

Understanding the Numbers

1. 0800 Numbers: These are freephone numbers used for businesses to allow callers within the UK to call them without charge. The cost of the calls is borne by the business owning the 0800 number.
2. 00800 Numbers: These are toll-free numbers designed for international use, allowing customers in multiple countries to call a central point without incurring international calling charges (charges may still apply depending on their provider). The company using the 00800 number pays all costs.

Why They Can Be Different Companies

1. Different Providers: A business can choose any Ofcom-approved provider to obtain an 0800 or 00800 number. There’s no requirement for them to use the same company for both types of numbers.
2. Routing Differences:
   • 0800 Numbers are routed through a UK-specific infrastructure, connecting callers directly to the business’s phone system within the UK.
   • 00800 Numbers use an international routing network that directs calls from various countries to a designated central location (which could be anywhere in the world).

How to Check Who Owns a Number

It’s not always straightforward, but here’s how you can investigate:

1. Ofcom Website: While Ofcom doesn’t publish a direct number lookup tool for 0800/00800 ownership, they provide information on approved providers. You can start by checking the Ofcom website to see lists of companies offering these services.
2. Number Lookup Services: Several online number lookup tools exist (e.g., Whois for phone numbers). These aren’t always 100% accurate, but can provide clues.

   Example search on a third-party website (results will vary):

3. Contact the Company Directly: The most reliable method is to ask the company directly which provider they use for their 0800 and 00800 numbers.

Example Scenario

A UK-based company might use:

• An 0800 number provided by BT to handle calls from customers within the UK.
• A 00800 number provided by a different provider (e.g., Twilio, Vonage) to allow customers in Germany, France and Spain to call them for free internationally.