Number overview
050-5794-5658 is an IP phone number with many user reports describing fiber-line sales calls (as of 2026-08-03).
Reported tactics
- Reports of openers such as "We are calling SoftBank Hikari users" that pose as a check on your current line
- Reports of callers naming themselves "SB Support" or a "fiber line company" while declining to give the company's location
- Reports of repeat calls even after declining
In response to rising complaints about fiber-line solicitations, the Ministry of Internal Affairs and Communications has issued administrative guidance to several operators under the Telecommunications Business Act.
How to handle this call
Don't pick up
The best approach is not to answer unfamiliar 050 numbers. If the matter is legitimate, the caller will leave a voicemail.
If you do answer
Say "I'm not interested" and hang up. Don't answer the caller's questions or share details of your current contract.
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
- Number-lookup articles via Hatena Bookmark: reports of line-contract sales calls in the name of "SB Support"
- tellows: 3 user comments describing sales in the name of a "fiber line company" (April to June 2026)
Where to report or get help
- Ministry of Internal Affairs and Communications - Telecommunications Consumer Consultation Center: 03-5253-5900
- Consumer Hotline: 188