The links on the main page of this site (https://isitdns.com) are affiliate links or links to an online shop,
which means if you click on the link and make a purchase, I will receive a commission.
The "sysadmin shirts & stuff" link goes to my Teepublic store, from which I will make a commission on your purchase.
The "what's DNS?" link is an Amazon Associates affiliate link; as an Amazon Associate I earn from qualifying purchases.