Number overview
050-3147-5542 is an IP phone number (the 050 prefix). It is reported as a sales call from a reseller promoting a fiber-line switch.
Reported behavior
- Sales calls from resellers promoting a fiber-line switch have been reported
- Pushes you to switch to a specific ISP
Phone-solicitation sales of telecom services are covered by Japan's initial contract cancellation rule (unconditional cancellation within 8 days).
How to handle this call
If you don't need it, decline with "I don't need it." If you do end up signing, you can use the initial contract cancellation rule.
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: registered with a warning label as a fiber-line sales caller
Where to report or get help
- Consumer Hotline: 188
- Ministry of Internal Affairs and Communications - Telecommunications Consumer Consultation Center: 03-5253-5900