Number overview
0120-993-979 is a Free Dial number (the 0120 prefix). It is reported as a sales call promoting a fiber-line switch.
Reported behavior
- Pitches such as "consolidating your fiber lines will lower your bill"
- Some calls don't give a specific company name, or use vague labels
- Tries to extract details about your current contract
The Ministry of Internal Affairs and Communications has communicated that solicitations for telecom services must clearly state the company name and contract details.
How to handle this call
If you don't need it, decline with "I don't need it." Confirm the company name; if anything looks off, hang up and verify directly with your current ISP.
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 fiber-line switch sales calls
Where to report or get help
- Consumer Hotline: 188
- Ministry of Internal Affairs and Communications - Telecommunications Consumer Consultation Center: 03-5253-5900