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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.
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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