people are hosting them, even challenge but they are hard to get into, the majority of lobbies are fake(just people scamming) if anyone says they are hosting on this form they are mostly likely scamming.

to find the real lobbies head over to call of duty modded lobbies section, read the posts ( the members with a lot of posts/rep/thanks and a legit looking post (not just sub to my tube and gt ) are most likely legit)

once you find a lobby its hard work getting into it so be patient