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Caller ID is a feature built into the phone. What specifically are you looking for?
 
I mean something that can lookup numbers and tell me company name and/or if it is a spammer.

By default I never see caller ID on my phone unless the caller is in my contacts.
 
TrapCall was updated for iOS 10. Haven't used it though but reviews look promising.
 
TrapCall was updated for iOS 10. Haven't used it though but reviews look promising.
I see that iOS 10 is mentioned, but I'm not sure if CallKit integration is part of the update, at least I haven't been able to spot anything related to it.
 
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