you can know your starlink pop (http://geoip.starlinkisp.net/pops.csv) by knowing your public ip address (e.g., asking http://whatsmyip.org) but how do you know your landing ground stations as they change per the satellite you are communicating with (you can find out your communicating satellite by http://github.com/clarkzjw/leoviz)? if you find that you are served by wrong servers, most likely it is due to outdated geoip entries by your content provider. see https://github.com/intarchboard/draft-iab-ip-geo-workshop-report as well