A quick keyword search on most major search engines offers numerous reliable online 800 number directories. Directories are available as lists or easily searchable databases. If you prefer printed media, most phone books contain local 800-number directories and truncated national listings.
All 800 numbers in the United States are designated as toll-free and are often available 24/7. Local phone directories and advertisements are common sources of 800 numbers. While many 800 numbers are associated with large corporations, some smaller businesses are now utilizing the toll-free service of 800 numbers. RingCentral and other telephone providers list unused 800 numbers available for purchase on their websites. Additional toll-free service is occasionally provided on 888 and 900 extensions.