Denwa
Find out who is behind unknown Japanese numbers - free.
Spam risk scores and user reviews for 090, 0120 and more.
How to Use
- 1
Enter a Number
Type the phone number you received a call from. Hyphens are optional.
- 2
Check Results
View caller information, spam score, and user reviews.
- 3
Share a Review
Post your experience as a review to help other users.
FAQ
How can I look up an unknown phone number?
Simply enter the number on Denwa to instantly check the caller's business name, region, and line type. An automatic caller identification feature is also available.
Can I check if a call is spam?
Yes. Each number is rated based on user reviews and shown with labels ranging from Safe to Danger. The more spam reports a number has, the closer its label is to Danger.
Can I post a review for a phone number?
Yes. You can post a review from the search results page. Share information using categories such as telemarketing, scam, or one-ring calls, along with a 5-level rating.
What types of phone numbers are supported?
We support major Japanese phone numbers including landlines (03, 06, etc.), mobile phones (070, 080, 090), IP phones (050), toll-free numbers (0120), and free-call numbers (0800).
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Key Terms
Frequently Reported Numbers
Phone numbers that have received user reviews and reports. Open a number's page to see the details.