KYC
Know Your Customer: the identity checks a platform runs on a new seller.
KYC is the identity verification a marketplace performs: documents, address proof, bank account, sometimes video. It is the stage where mismatched data hurts most.
Name, address, bank country and phone country should agree with the account's declared market. An IP from another country adds another contradiction.
Fix the network before KYC, not after — changing details during verification is slower and more suspicious.
Related: Residential IP · Native IP · Dual ISP · CGNAT · ASN · BGP · RPKI · Anycast