I have seen a lot of threads regarding directory.io and I know one should spend more than his lifetime to search for all addresses and to check if there is any balance in there.
Are private keys of hardware wallets addresses on that page or only software ones ?
Does your hardware wallet use an address (or addresses) beginning with a 1? If so, it will be on directory.io somewhere.
It doesn't matter what device the address is generated on, as directory.io just generates every possible non-P2SH (3 prefix) address and throws it out there.