(SQL Server) Geolocation of IP Address

To get information about an IP address, there are various public web services that can be queried. I would also guess that paid-for services exist. In any case, it's likely the service is accessible via a REST API. This example demonstrates a few public geolocation API's, each of which may have limitations on the number of queries per hour/day/etc.

Also, please note that this example was created on 23-Sep-2016. As time goes by, the public services referenced by this example may have changed or disappeared entirely. Make sure to do your research before assuming this example will work. The intent of this example is to give a flavor of what might be possible.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- The IP address used in this example is 104.40.211.35
    DECLARE @ipAddress nvarchar(4000)
    SELECT @ipAddress = '104.40.211.35'

    -- First we'll try the service at freegeoip.net.
    -- They have a limit of 10,000 queries per hour, and also 
    -- provide free source code to run your own server.

    DECLARE @rest int
    -- Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Connect to freegeoip.net
    DECLARE @bTls int
    SELECT @bTls = 0
    DECLARE @port int
    SELECT @port = 80
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    DECLARE @success int
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'freegeoip.net', @port, @bTls, @bAutoReconnect
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    -- Query the IP address to return JSON.
    DECLARE @responseJson nvarchar(4000)
    EXEC sp_OAMethod @rest, 'FullRequestNoBody', @responseJson OUT, 'GET', '/json/104.40.211.35'
    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    -- Just in case we are still connected..
    DECLARE @maxWaitMs int
    SELECT @maxWaitMs = 10
    EXEC sp_OAMethod @rest, 'Disconnect', @success OUT, @maxWaitMs

    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'Load', @success OUT, @responseJson
    EXEC sp_OASetProperty @json, 'EmitCompact', 0

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- The JSON we get back looks like this:
    -- {
    --   "ip": "104.40.211.35",
    --   "country_code": "US",
    --   "country_name": "United States",
    --   "region_code": "WA",
    --   "region_name": "Washington",
    --   "city": "Redmond",
    --   "zip_code": "98052",
    --   "time_zone": "America/Los_Angeles",
    --   "latitude": 47.6801,
    --   "longitude": -122.1206,
    --   "metro_code": 819
    -- }

    -- Examine a few bits of information:

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'country_name'
    PRINT 'country name = ' + @sTmp0

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'country_code'
    PRINT 'country code = ' + @sTmp0

    -- -----------------------------------------------------
    -- Now to use ip-api.com, which is mostly the same..

    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'ip-api.com', @port, @bTls, @bAutoReconnect
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    -- Query the IP address to return JSON.
    EXEC sp_OAMethod @rest, 'FullRequestNoBody', @responseJson OUT, 'GET', '/json/104.40.211.35'
    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    -- Just in case we are still connected..
    EXEC sp_OAMethod @rest, 'Disconnect', @success OUT, @maxWaitMs

    EXEC sp_OAMethod @json, 'Load', @success OUT, @responseJson
    EXEC sp_OASetProperty @json, 'EmitCompact', 0

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- The JSON we get back looks like this:
    -- This is very strange, because the two services don't agree.
    -- {
    --   "as": "AS8075 Microsoft Corporation",
    --   "city": "Amsterdam",
    --   "country": "Netherlands",
    --   "countryCode": "NL",
    --   "isp": "Microsoft Corporation",
    --   "lat": 52.35,
    --   "lon": 4.9167,
    --   "org": "Microsoft Azure",
    --   "query": "104.40.211.35",
    --   "region": "NH",
    --   "regionName": "North Holland",
    --   "status": "success",
    --   "timezone": "Europe/Amsterdam",
    --   "zip": "1091"
    -- }

    -- Examine a few bits of information:

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'country'
    PRINT 'country name = ' + @sTmp0

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'countryCode'
    PRINT 'country code = ' + @sTmp0

    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @json


END
GO