example.com (among others) is reserved per https://tools.ietf.org/html/rfc2606 https://tools.ietf.org/html/rfc2606 It's very unlikely that those reserved domai

example.com (among others) is reserved per https://tools.ietf.org/html/rfc2606 https://tools.ietf.org/html/rfc2606 It's very unlikely that those reserved domains will be controlled by someone nefarious in the foreseeable future. I've made it a habit to use them instead of something like "insertyourdomain.com" in example configurations or dummy data for tests (where I perhaps need a valid-looking domain). In the unlikely event that something is ever sent to it, example.com is a much better choice than just some random string, since someone could register it and accept that traffic.