katia! The best phone antispam

Since three years we are successfully fighting criminal calls. If you want to definitively get rid of phone threat, try our solution!

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unwanted calls blocked
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annoying calls blocked per day
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threats blocked each day
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eligible users

katia never sleeps

Analyse, learn and decide. katia is our detection algorithm able to detect and block in realtime phone threat.

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Rules for detecting threat
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New threat detection time

katia for individual

Simultaneous ringing

Remote call screening

For Sunrise and Swisscom subscribers

29.95.- CHF per year + 30.- CHF activation fee (vat excl.)

Request an activation

katia for VoIP

Remote call screening

Compatible with all SIP provider

 starts at 19.95.- CHF per year (vat excl.)

Create an account

katia for business

Simultaneous ringing PRO

For Sunrise and Swisscom subscribers

Advanced configuration

starts at 59.95.- CHF per year (vat excl.)

Request an activation

katia for VoIP PRO

SIP and SIP TRUNK

Advanced configuration

 starts at 59.95.- CHF per year (vat excl.)

Create an account