Number overview
050-1783-8344 is an IP phone number (the 050 prefix). Multiple phone-number directories carry user reports describing sales calls about electricity-plan switching and storage batteries from this number (as of 2026-08-03). Telnavi classifies it as electricity sales, and jpnumber registers it under the name LS.
Reported behavior
- Sales calls proposing a review or switch of your electricity plan
- Solicitations about storage batteries
How to handle this call
Verify with your own utility
Never discuss your bill or contract details on such a call; check directly with the desk printed on your bill or the official site. Avoid reading your meter slip or customer number to the caller.
You may simply decline
Japanese law prohibits re-soliciting someone who has declined a telemarketing pitch. Say no clearly and 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:
- Telnavi: user reports classifying it as electricity sales (batteries and plan switching)
- jpnumber: registration under the name LS with user reviews
- Minna no Denwacho: reviews describing 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