In July a court ordered the police to switch it back on by the end of July, but BBC calls to the number in Nairobi have gone unanswered.
Police turned off the number in 1998, saying they did not have the personnel and facilities to deal with the calls.
Residents had to use long local numbers to get through to the police.
The BBC’s Caroline Karobia in the capital, Nairobi, says it was often easier to go to the nearest police station to report a crime than look up a nine-digit number for the service.
It had also been overloaded by those testing the line, he said.
Kenyan activist Okiyo Omtatah went to court in May seeking to get the number switched back on.
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