Adnetwork for house ads

Hello all
I made some deals with local stores that the user they refer to my app, I will display their ad to the user. So obviously I have a (store Id, advertisement) combo. Is there an ad network thst I can use for house ads so that I can get the house ad by Id for these specific set of users (and offcourse other users will be normal adds).?

I looked into admob but they don’t let you control which house ad you show.

I am thinking about it building it myself but thought I would check before reinventing the wheel

Thank you

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