Contact element risk
What independently observable technical, provenance, tenure, or disposability signals are associated with each presented email address or phone number?
The data that answers it
Ranked by fit · best firstLookup v2 accepts a buyer-selected phone number and returns phone validity plus optional carrier name and enumerated line type. It is phone-only telecom evidence, not identity, reachability, location, or fraud proof.
The metered authenticated endpoint accepts a buyer-selected phone number and returns validity, carrier, and phone type. It is phone-only telecom evidence, not identity, reachability, location, or fraud proof.
Authenticated single and bulk validation for a buyer-selected email reports SMTP mailbox appearance and disposable-provider status. This is email-only technical evidence and does not prove the mailbox user or delivery.
Personator result codes report phone validity, email syntax/domain status, historical-address status, and pairwise contact matches. Email syntax/domain status is not mailbox deliverability and no result proves the user.
Related questions
Under Person identity validity, Person location and contactabilityNeed Contact element risk answered at scale?
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