[Home](./index.md) > [puppeteer](./puppeteer.md) > [SecurityDetails](./puppeteer.securitydetails.md) > [subjectAlternativeNames](./puppeteer.securitydetails.subjectalternativenames.md) ## SecurityDetails.subjectAlternativeNames() method Signature: ```typescript subjectAlternativeNames(): string[]; ``` Returns: string\[\] The list of [subject alternative names (SANs)](https://en.wikipedia.org/wiki/Subject_Alternative_Name) of the certificate.