SAYNOTO0870.COM is a UK-based telephone-number directory that helps people find less expensive ways to contact businesses and organisations. Visitors can search by company name or telephone number to look for alternative numbers, including standard 01, 02 or 03 numbers and freephone 0800 or 0808 numbers, in place of higher-cost 084 or 087 lines. The site explains how access and service charges can make calls to some non-geographical numbers more expensive, and provides guidance on calling costs and cheaper call providers.

Users can contribute by submitting new alternative numbers and reporting listings that no longer work, helping keep the directory useful to others. Additional site features include a discussion forum, links, help information and contact details. SAYNOTO0870.COM focuses on practical consumer information and potential savings when contacting customer-service teams, sales departments and public services. The site says it has been featured by BBC programmes and in publications including The Guardian, Which? Magazine and Reader’s Digest. It also displays sponsored links to external services, including broadband, mobile, energy and money-saving offers.