* Publish mDNS records to give myself extra `.local` names, or * Get a wildcard published in the organisation's internal DNS
If you can't do either of those, _please_ use `.test` as your test TLD, as it's explicitly set aside for that purpose so you know you're never going to collide with anyone.
I wrote such a tool:
https://github.com/bertjwregeer/mdns-announce
It allows you to easily announce CNAME's in mDNS to do the sort of dev testing locally that requires alternate domains, without the possibility of leaking them outside of your own local network.
https://github.com/bertjwregeer/mdns-announce
It publishes CNAME records into mDNS for adding additional "hostnames".
I've hacked together an Apache module that tries to announce local hostnames for vhosts, but while it's good enough for me it's never been quite good enough for me to share.