Is it possible to reference a different IP address for a URL at the router?

I'm wondering if it's possible if it's possible to point a specific URL to a different IP address at my router or another network device, assuming my DNS entries are pointed to a global DNS server (8.8.8.8 for example).

We have production and DR instances on the Internet that have different URLs (and IP addresses) and am thinking of workarounds of using the same URL (aside from typing it in since users might get confused with two URLs).