https://www.world-airport-codes.com/world-top-30-airports.html
Discover the world’s busiest airports based on passenger numbers. World Airport Codes provides several ways of researching the airport of your interest.
in the worldlist oftopairports
https://www.gov.uk/guidance/list-of-uk-airports-and-seaports-with-red-channels-or-red-point-phones
Find out which customs areas have a red channel or red point phone if you need to declare goods or tell HMRC that goods you've previously declared have arrived.
list ofuk airportsred channelsseaports
https://aviareviews.com/airports/japan/
On this page you can find list of airports in Japan: customer reviews, location, contact details, top routes and nearest airports.
list of airportsin japan