Has anyone ever heard of this? Repeated calls originating from 999111* (e.g. 999111100) that are routed to our receptionist's extension (100 & 101)? The calls are happening frequently (several times a day) with no one on the other end. I performed a search of this and nothing came up.

Ideas?

Is this what is coming in as the Caller ID? We see numbers like this sometimes from telemarketing companies at the office.

Trailing characters following 999111 appear on caller id. For example, 999111100 will appear as 100 on the endpoint. Is it possible to block these on the system or route them to a dummy extension? Our telco provider wants to charge us for blocking so I'm looking for alternatives.