Does a contact name prove who owns a telephone number?¶

No. A contact name records how a device, account or caller-identification service labelled a number; it is not subscriber or user verification.

Establish where the label came from¶

It may be a locally entered name, nickname, role, alias, imported cloud contact or platform profile. Caller-identification databases can be outdated or based on user submissions. Contacts can persist after a number is reassigned or ported.

Record the exact number, label, source application or address book and relevant date. The entry can show how a user understood the relationship and may gain weight from consistent calls, messages and content.

Verify the number independently¶

Use lawful provider records, registration, payments, possession of the associated device, account activity and communications to address subscriber and actual user. A messaging display name may come from the local contact, remote profile or platform, so identify which system supplied it.