I came across this status code 21006
on Apple's status code page and it says
This receipt is valid but the subscription has expired. When this status code is returned to your server, the receipt data is also decoded and returned as part of the response. Only returned for iOS 6-style transaction receipts for auto-renewable subscriptions.
The last sentence there is confusing for me. Does this mean it will be returned for iOS versions 6 and after? or only iOS version 6?
Can I safely use this code to assume a subscription has expired?