Like after midnight or just late evenings? Have to be a bit more specific!

Many NYC AMPs are essentially 24/7.  You can have a good time but they are mostly non-GFE.  The girls pretty much live-in for several days at a time in rotating shifts. If you call with enough notice, it will wake up the phone girl, even at 3:30 AM, and they can wake someone up, who will wash the sleep out of her eyes and be ready to see you when you ring the bell, even at 4 AM.  (Not all AMPs will answer 24/7 but many do.

Diana Love will make you howl in the evening hours.

nycad

I am generally a night owl and can be available late at night.  However, I do require references and usually references don't respond to requests at 3AM.  If a gentleman has P411 or Date-Check, though, sometimes a late night can be arranged with a few hours notice.  Or if a gentleman can easily screen using his employment, which can be done fast.  Or if someone wants to book in advance, but I think when you are asking about late night providers you really mean last minute / late night providers.  Best way to reach me for last minute appointment requests is to leave me a voicemail with the same level of detail you'd include in a booking request email, including references.