Location lac. Public database of telephone exchanges around the world

To do this you will need:
1.Mobile phone;
2.Internet access;

The phone must support netmonitor. Don’t be alarmed, this built-in utility is present in almost every second mobile phone, as well as in all phones with Android and iOS.

IPhone is *3001#12345#* ,
Android *#*#4636#*#* or *#*#197328640#*#* .

In my example, iPhone 4s.

Open netmonitor by dialing *3001#12345#*, then the UMTS Cell Environment tab, then UMTS RR info. We are interested in the Cell ID field. On iPhones, this number is represented somewhat differently, or rather in hexadecimal (hex) format, for example 1a123cc.

We monitor this field and write down all the values ​​of the Cell ID field on a piece of paper; there won’t be many of them, most likely less than five.
The phone itself selects a BS (base station) based on the best signal level, location range, etc., so most likely there will be several BS numbers, but still unlikely to be very many. We need to know the identifiers of all base stations that the phone can pick up in this location.
All. Now, in moments of particularly aggravated paranoia, you can come here and check our leaflet for the unknown numbers of the “base stations” that may be located in Gazelle near the entrance)))

I'll move on to the second part of the topic title.

Knowing the identifier of the BS that is serving us at the moment, all you need to know is LAC, Local Area Code - local area code.
In order to find out LAC, go to netmonitor, open the MM info tab, then Serving PLMN:

After we have found out the LAC and Cell ID, we go to http://xinit.ru/bs/.

At the time of writing this post, my base station was not found, so I could not determine whether I was being monitored or not.

On this site http://opencellid.org/ you can determine the approximate location of the phone, knowing just a few parameters:

MCC (Russia 250, Ukraine 255, Belarus 257)

MNC (network code: Beeline - 99, MTS - 01, Megafon - 02, Tele 2 - 20, Rostelecom - 39)

LAC (how to find out LAC is written above)

CID (how to find out LAC is written above)

http://opencellid.org/ fill out the fields (enter Cell ID in hex format in the appropriate field!) and admire the map.

Thus, we can view the location of a mobile phone absolutely free. Convenient isn't it?

Today I want to present to everyone the database of telephone exchanges around the world.

This can be useful for applications or services that want to obtain its geolocation and type using mobile station identifiers. This database is partially a copy of The OpenCellID map, however, in the official implementation there is a limit on the number of requests and it is mandatory to issue an API key. The database also contains other data sources.

List of open sources:

• OpenCellID (CC-BY-SA 3.0 unported)
• openBmap.org (Open Database License (ODbL) v1.0)
• Mozilla Location Service (CC0 1.0 Universal (CC0 1.0))

In my implementation there are no limits or keys.

Data is updated weekly.

API Implementation (Open Sources)

http://api.site/geolocation/cell address requests are transmitted using the GET method

Also available via the protocol https://api.site/geolocation/cell

1. mcc - Integer (Country code)
2. data=open - an indication that the data received from the API is strictly open

Answer:

A JSON string with a required result field.

If a station is found in the result field, a response is received 200 , in case of errors the code is returned 404.

( "result":200, "data":( "lon":"30.385654398", "mcc":250, "lac": 7840, "range":"869.994176272", "radio":"UMTS", "samples ":49, "time":1430577060, "lat":"60.056594206", "mnc":2, "cellid":200719106 ) ) ( "result":404, "data":( ), "real":6 , "desc":"No information about location", "time":1430579063 )

Description of successful response:

• lat - latitude
• lon - longitude
• range - accuracy of determining coordinates in meters
• samples - number of measurements
• mcc - country code
• mnc - mobile operator code
• lac - mobile region code
• cellid - Base station ID
• radio - tim base station

API Implementation (Data "as is")

There are 4 required fields for the request:

1. mcc - Integer (Country code)
2. mnc - Integer (telephone operator code)
3. cellid - Integer (telephone exchange code)
4. lac - Integer (Region code or Area, Location)
5. v - Version number (Current version 1.1)

Updated location

A new function is introduced to obtain the approximate location of the triangulation center point. The syntax is as follows: a set of base stations visible to the receiver and the strength of the station signals is transmitted to the server, and the server, based on available data, receives the approximate position of a point that is qualitatively a triangulation center. all request data is wrapped in base64

Example source line:

250,02,7810,318,-81;250,02,4711,24208,-83;250,02,4711,24214,-89;250,02,4711,619,-95;250,02,4711,16627,-95

mcc,mnc,lac,cellid,SS;mcc1,mnc1,lac1,cellid1,SS1

In this mod, the data=open tag also works, which tells the server that data should be obtained exclusively from open sources. Unfortunately, in this case, situations with negative results are common.

It is important to note that the API allows you to geolocate across different operators simultaneously; if a subscriber can hear many networks around, then his location can be determined quite reliably.

Demo

Here is a demo visualization of search results using the API service.

Published 04/22/2015 by John

Is your phone being tapped?

To do this you will need:

1.Mobile phone;

2.Internet access;

Detecting communication towers is not a criminal activity, but a fairly common task in remote regions and villages where the quality of coverage leaves much to be desired. How can you understand why this post gives better results than that wicket? The following tools and websites can help you navigate.

Of the English-language services, perhaps the best is opensignal.com, where you can select the operator and the required location. The map does not show towers, but does show coverage areas. Among the Russians, I can recommend netmonitor.ru - its database contains a lot of information about operator towers.

Some Android applications are also interesting. For example, OpenSignal displays a map of cell towers and Wi-Fi points (locations with poor connections are also marked on the map), has a built-in compass and a speed checker.

Another interesting utility is Netmonitor. It can monitor GSM and CDMA networks, shows information about signal strength, contains a database of cell towers, supports devices with multiple SIM cards, and can also keep a log in CLF or KLM format.

Please note that Netmonitor has limitations when running on devices from some manufacturers. On Motorola, LG, Samsung, Acer and Huawei smartphones, the list of neighbors may be empty, and on Samsung devices, the signal strength may also not be displayed.

I also recommend the GSM Signal Monitoring application, which allows you to work with GSM, UMTS and LTE networks. It displays the change in signal level on a graph and shows neighboring cells (only in GSM networks). There is a data transfer rate monitor and the ability to track connection status, connection standard, cell and current zone identifiers (LAC/RNC/TAC) and received signal strength level (RSSI, as well as RSRP for LTE).