Do you mean which server pod your instance is hosted? If that's what you mean, you can look at the URL of your Marketo instance to deduce the data center where your pod is hosted. It's not 100% clear, but here's what I know generally:
Thanks for your reply. It helps a lot. Could you share where can I get full abbreviations details from Marketo documentation page?
Could you also please help me understand what is the number means next to lon etc..
Example: https://app-lon15.mkto.com/#CAXXXX (dummy url)
The Nth host. Like if you have 20 hosts in a Data center (assuming no additional load balancing) they're 01-20. Standard public naming convention instead of calling them Abel, Brian, Chrystal, etc.