[obaranow2015]

I think I may have figured it out, the challenge has to do with wind.

The first numbers are area codes, to Vilnius Lithuania, Rockford IL, and Colchester, all have wind turbine farms. Right now the museums of Lithuania, has an energy and technology wing, which includes wind. In 1957 the museum was destroyed in the soviet war. Rockford IL also has a wind farm, with 63 working wind turbines, and on April 4th 1963 the city had major damage due to a wind storm. Now, Colchester IL, and Colchester in UK both have wind turbine farms, but I can't figure out the last number, 15806.

so yah thats what I think