Zenith Insurance Company. Is this your insurance company? ... Headquarters P.O. Box 9055 Van Nuys, CA 91409-9055. Customer service 800-440-5020. Now, who's ready to get their insurance problems solved? Request a Quote. Are you looking for insurance coverage from a Trusted provider?Location: P.O. Box 9055, Van Nuys, 91409-9055, CA
Zenith National Insurance Corp. is the holding company of Zenith Insurance Company and its subsidiaries, including ZNAT Insurance Company. Fairfax stock price lookup. Zenith Insurance Company and ZNAT Insurance Company each has a Financial Strength Rating of A (Excellent) from A.M. Best. For the latest rating, go to www.ambest.com.