Guides
How to check if a phone number has an X (Twitter) account
To check if a number is linked to an X (Twitter) account, send it to a registration check: you get registered, not registered or unknown, never the handle.
11 min read
Articles tagged “Lead verification”
6 articles.
Fraud prevention
Phone number reputation lookup: free ways to check a number, and when you need an API
Free ways to run a phone number reputation lookup (regulator complaint data, phone labels, report sites), their limits, and when an API score is worth it.
10 min read
Guides
How to check if a phone number has a Facebook or Instagram account
Check if a phone number has a Facebook or Instagram account: a yes, no or unknown answer with a date, never a profile. Real time or bulk, with WhatsApp.
10 min read
Fraud prevention
How to tell if a phone number is fake: a practical checklist
How to tell if a phone number is fake at sign-up, in a lead form or on a list: format, line type, network status, app presence, reputation and patterns.
11 min read
Guides
Role-based e-mail addresses: accept, flag or block?
What role-based e-mail addresses are, when to accept, flag or ask for a personal address, and how to detect them without false positives.
8 min read
Guides
WhatsApp Business account check: what the business flag tells you (and what it doesn't)
To tell if a WhatsApp number is a business account, open its profile (business details, blue check for official accounts) or run a business check in bulk.
8 min read
