Number overview
For 050-3110-0312, directories and social media carry user reports describing tax-accountant referral sales calls in the name of Biz Platform (as of 2026-08-03). jpnumber registers the name, Telnavi lists many referral-sales reports, and X posts describe AI-generated voice calls.
Reported behavior
- Sales calls to businesses about tax-accountant referral services
- Reports of AI or automated voices
How to handle this call
Change advisers carefully
Switching your tax adviser is a consequential decision. Never decide from a referral call; check terms and track records in writing.
You may simply decline
Re-solicitation after refusal is prohibited; for automated voices, just hang up.
Sources of the reports
The descriptions on this page are based on user reports posted to third-party phone-number directories (checked as of 2026-08-03). This site has not independently verified the caller, and nothing here identifies the caller definitively. The reporting sources we checked are:
- jpnumber: registration under the name Biz Platform
- Telnavi: numerous reports of tax-accountant referral sales
- Number-lookup articles via Hatena Bookmark: office-targeted referral sales reports (April 2026)
- X (formerly Twitter): posts describing AI-voice sales calls
Where to report or get help
- Consumer Hotline: 188
- Police consultation line: #9110
- Ministry of Internal Affairs and Communications - Telecommunications Consumer Consultation Center: 03-5253-5900