Check Microsoft Registration
Reach 1B+ users across Microsoft's workplace and gaming ecosystem
Upload up to 1 million accounts per batch. Two-layer checks (carrier validation + Microsoft registration) finish a full screening in about 3-5 minutes.
Capability Track
phone-list.txt
+44 7……2484
+62 8……9017
+55 1……6723
√ One number per line in TXT
Valid filtering accuracy ≥98%
Average speed: 3 min / 1M records
Export TXT/CSV/Excel
Microsoft Validity Check
Microsoft Account Check
Capabilities
What can GeekNums check on Microsoft?
Valid Filter
Verify the number is real + whether it's registered with a Microsoft account.
Number status
RegisteredNot registered
Bulk Number Filter
Submit numbers in bulk, then review and filter results in one place to process large volumes efficiently.
Screening progress
4 Steps
Bulk-check Microsoft in just 4 steps
Use case: find out which accounts are registered with Microsoft.
Generate Numbers
Use the number generator to create numbers for your target region (or upload your own numbers directly).
Upload Numbers
TXT/CSV/Excel supported, up to 1 million records per upload.
Two-layer Validity Check
1. Check the number really exists
2. Check Microsoft account registration and identify the main service type
Export Results
Download the completed file and export every filtered result in bulk.
Q&A
FAQ
190+ countries/regions worldwide. Core highly active markets include the US, UK, Canada, Germany, France, Australia, Japan, India and Brazil. The US, UK and Germany have the highest Microsoft 365 enterprise penetration, making them ideal for B2B SaaS and enterprise services; the US, UK and Brazil have the largest Xbox player bases, suiting game publishing; Outlook usage is growing fast in India and Southeast Asia, suiting cross-border email marketing.
For Outlook and business email users, import results into email platforms (such as Mailchimp, HubSpot or SendGrid) for campaigns. With invalid addresses already removed, bounce rates drop sharply, helping your sending domain reputation. Xbox players can be reached through Xbox advertising or in-game messaging. Use concise, professional subject lines for Teams business users and visually rich templates for Xbox game promotions to match each audience's expectations.
