What is Microsoft number checking?
It applies a selected Microsoft check to a lawfully obtained number list and returns structured results aligned with the source data.
Microsoft Hub
Microsoft Number Checking Research and Guides
Practical guidance for Microsoft registration checks, from reliable TXT input to task selection and result interpretation.
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Frequently asked questions
Which upload format is supported?
The current workflow accepts TXT files. Use one normalized phone number per line.
Where can I confirm currently supported fields?
Check the Microsoft product page and signed-in dashboard for live task types, fields and credit usage.
