Be careful with these telephone numbers: under no circumstances answer your cell phone. Each month, spam protection and caller ID experts reveal the top suspicious phone numbers reported by consumers.

Of these phone numbers, there were the most spam calls in January 2024. Great Britain takes the top three positions in the top 10 ranking. All telephone numbers in the ranking are cost traps. These range from false, seductive promises of prizes to offers for dentures or health insurance and continuous telephone harassment. The encouraging thing, however, is that reported blockings have increased by 26.6 percent.