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🇯🇵 Japan · +81

Reported numbers in Japan

Phone numbers with spam or scam signals observed in Japan, aggregated from independent complaint sources and the Numbers Online community. Everything on this page is a supplementary signal — advisory, not a verdict — and personal numbers are never listed.

← All countries
1,612
Numbers with signals
73.7K
Reports across sources
495
Active last 30 days
5h ago
Latest activity
Recently active numbers
24 shown
5h ago
+817026354204
Phishing / smishing
6 reports1 src
Very risky
5h ago
+81120994617
Phishing / smishing
39 reports2 src
Low
5h ago
+819057709492
Phishing / smishing
13 reports2 src
Very risky
5h ago
+818090027296
Phishing / smishing
37 reports1 src
Very risky
5h ago
+818086589647
Robocall
59 reports2 src
Low
5h ago
+818085739522
Phishing / smishing
8 reports1 src
Very risky
5h ago
+818078484493
Robocall
5 reports1 src
Low
5h ago
+818028994921
Phishing / smishing
54 reports1 src
Very risky
5h ago
+818020591381
Robocall
11 reports1 src
Fair
5h ago
+815068636831
Phishing / smishing
7 reports1 src
Very risky
5h ago
+818005003931
Robocall
152 reports1 src
Fair
5h ago
+817038621460
Phishing / smishing
8 reports2 src
Low
12h ago
+815031295786
Telemarketing
40 reports2 src
Low
15h ago
+81120499477
Phishing / smishing
9 reports2 src
Low
21h ago
+818007004107
Telemarketing
12 reports2 src
Low
1d ago
+81264030748
Phishing / smishing
10 reports2 src
Low
1d ago
+81525592761
Telemarketing
8 reports1 src
Low
1d ago
+81527285542
Telemarketing
5 reports1 src
Low
1d ago
+81570069911
Phishing / smishing
22 reports1 src
Low
1d ago
+815054821341
Telemarketing
11 reports1 src
Low
1d ago
+815052912395
Robocall
4 reports1 src
Fair
1d ago
+815031751006
Phishing / smishing
7 reports1 src
Low
1d ago
+81523101092
Telemarketing
12 reports1 src
Low
1d ago
+815031203652
Robocall
9 reports1 src
Low
Freshness reflects when a source last observed activity — never when we crawled it. Full history and scoring on each number’s lookup page.
What gets reported
Phishing / smishing586
Telemarketing395
Survey164
Robocall118
Silent / hang-up101
Reported activity90
Ping call80
Debt collection50
Most-reported prefixes
+81 800153+81 503133+81 505129+81 120127+81 80161+81 80258+81 70357+81 50154
Number ranges where signal numbers cluster. A prefix itself is never bad — plenty of legitimate numbers share it.
Monthly data report
Phone spam trends · September 2026 →
Country movement, top categories and new number-range patterns.
Aggregated from independent complaint feeds and community reports; refreshed on a schedule (last 5h ago). These are supplementary signals to help you decide whether to answer — advisory, not a verdict on any number or its owner. Got a call? Report it · listed in error? Request removal.
Other countries
United States3.1MPoland115.4KGermany36KLithuania25.8KUnited Kingdom17.4KRomania5,046Italy4,437Denmark3,593Spain3,346Morocco3,328