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Registered Firms Directory Information

Emergency Response Program

Trying to find out if one of your suppliers is registered with Underwriters Laboratories? Checking to make sure your newly registered firm has been added to our growing list of registrations? There are several ways to find out this information.

Online Registered Firms information

Registered Firms information is now available online. You may search our database by linking to it from the UL Home page or by going directly to the Online Certifications Directory.

Use our toll-free number or e-mail

Another, often more convenient way to find out Listing information is to use our toll-free telephone number. You can verify a product's UL Listing or Classification or a firm's registration status from anywhere in the world by sending an e-mail to ulds@us.ul.com. From the United States and Canada, you can call our toll-free number: 1-888-LISTUL1 (1-888-547-8851).

For more information about any of our services, or if you have a question concerning a system registration Listing, please complete and submit our online Contact MSS form. You can also call us toll-free at 1-800-285-4476.

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