The definition of operator by phone number

Hello, colleagues!
Another question.
There is a subscriber base numbering tens of thousands of subscribers.
The rooms were driven haphazardly into the text box, from day to day will start to put numbers in order and make a separate table.
In parallel, there is the subtask of determining the operator specified by the subscriber number.
Attention, question: what free solutions exist today to solve this problem?
October 3rd 19 at 03:38
4 answers
October 3rd 19 at 03:40
Solution
Thank you! - ruthe.Lemke commented on October 3rd 19 at 03:43
October 3rd 19 at 03:42
Given the abolition of "mobile slavery", as they call it we have the introduction of MNP, as it is called in the World — I think this definition will lose relevance, for all these distribution will quickly become irrelevant.

In fact, the Ministry postponed the introduction of MNP (Mobile number portability) c 1 Dec 2013 1 Mar 2014 (according to the requirements of the Ministry of communications — the shift operator is possible with preservation of the rooms and the service cost should not exceed $ 100), but imposed the condition — who "no time" — will be subject to a penalty for 5копеек per day for each registered subscriber. And for some operators will amount to several million rubles per day. Quite a large sum, which would delay implementation even further.

As I see it — it will be quite a big wave of shift operators. In fact, many are not happy with the rates/facilities/services, but remain, as this room know too many people who do not in your contacts, but it will be bad if you will not be able to call you. So sit "in bondage" to the operator because of the reluctance to change the room.
This, of course, will have other consequences, but this is beyond the scope of the question.

But whether somewhere affordable to live room operator, even for a small amount — a good question and the answer to it yet.
Very very useful review. Thank you. Wow, I totally forgot about mobile slavery, although himself forward ) - ruthe.Lemke commented on October 3rd 19 at 03:45
October 3rd 19 at 03:44
About free, don't know, but for the money MTT guide gives.
www.mtt.ru/mtt/def

Try to contact them. Perhaps the amount was not exorbitant.
October 3rd 19 at 03:46
HLR query. Access open and accessible to subscriber information contained in the register HLR of the cellular communication operators of Russia.
HLR query returns information about the SIM card number, country and region of the subscriber.
HLR query is performed invisibly to check the caller.

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