In some countries, providers can be lazy when it comes to providing names to caller ID information. This is why you might see Wireless Caller when someone calls you. Yes, this is lazy as it is likely that the provider knows the name of the customer making the call. In Kaldus, Ka-Tel is responsible for providing a centralized Caller ID information to the person being called. This means every customer will have their name listed when making a call.
The only exemption is 90z telephone numbers. In this regards, the name is always listed as Undisclosed Caller. These numbers are only provided to people that needs a telephone number with plausible liability. This will include abuse victims, journalists, and whistle blowers. The person must apply for a number with Ka-Tel, and can take that authorizations to any carrier location to acquire a telephone number with the 90z telephone number. Because of the 0 in the second place, there is no way that 90z telephone numbers will be mistaken for an Foreign Assignment number.