I just tried this on Safari on my phone - I was sent to Realtor.com as well. I tried it a few times and was redirected each time, even though I typed "realty.com" in the URL bar (and it didn't auto-correct before I hit "Go").
Edit: I have “Suggestions in Search” turned off, maybe that’s it?
When I enable private browsing, Safari correctly takes me to realty.com
When I disable private browsing, Safari takes me to realtor.com
I am in the US