Anonymous ID: 56d505 Oct. 1, 2018, 11:03 a.m. No.3280696   🗄️.is 🔗kun

>>3280627

Air Defense Identification zone, I would think

en.wikipedia.org/wiki/File:Map_of_the_boundaries_of_the_ADIZ.jpg

 

Also:

en.wikipedia.org/wiki/Territorial_waters