HD Wallet Discovery
This tool discovers all used addresses in your HD wallet.
Change addresses are included.
Just enter your Master Extended Public Key (xpub) and go!
Under the covers, this tool uses a command-line (CLI) utility called hd-wallet-addrs.
hd-wallet-addrs is available for those who do not wish to give out their master xpub, or who just prefer to do things themselves.
Discover all used addresses in your HD wallet
Here's an example XPub you can try, in case you don't have your own handy.