Number overview
0800-300-9536 is a toll-free number (the 0800 prefix). Phone-number directories carry user reports describing survey calls from this number in the name of a "Kansai rental-housing survey center" (as of 2026-08-03). We could not confirm that any such organization exists.
Reported behavior
- The caller claims to be a survey organization such as a "Kansai rental-housing survey center"
- When answered, a survey starts by asking for your age bracket (20s, 30s, 40s, and so on)
- Some reports describe an automated voice running through questions one-sidedly
Survey calls under unverifiable organization names are often flagged as list-building that collects respondents' age brackets and at-home hours. We recommend not answering the questions.
How to handle this call
You can simply hang up on survey calls you do not recognize. Do not share personal details such as your age, family makeup, or housing situation. If the calls persist, block the number.
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 as a self-described "Kansai rental-housing survey center" (with a note that its existence is unverified)
- Telnavi: a review describing an age-bracket survey starting upon answering
- X and personal blogs: reports of similar survey 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