In this how-to, you’ll see how to add TXT records for a domain in your Namecheap account.
If your domain is pointed to Namecheap hosting, you can add the host records in cPanel as described in this knowledge base article: https://www.namecheap.com/support/knowledgebase/article.aspx/9256/29/how-to-edit-dns-zone-in-cpanel/
Find your dream domain: https://www.namecheap.com/domains/domain-name-search/
Please keep in mind that we’ve recently switched domain privacy protection service providers from WhoisGuard to Withheld for Privacy. You can find more details on the matter in this blog post: https://www.namecheap.com/blog/domain-privacy-is-changing-at-namecheap/