Odd random.localdomain lookups in pi query logs

[yubiuser]

Looks like:

Just some weird domains being logged

Time Type Domain Client Status Action Time Type Domain Client Status Action 2016-12-22T19:34:41 A yfjmdpisrvyrnq localhost(127.0.0.1) OK 2016-12-22T19:34:41 A attxnwheeeuiad localhost(127.0.0.1) OK 2016-12-22T19:34:37 A nskywzjbpj localhost(127.0.0.1) OK 2016-12-22T19:34:35 A jlkjfxgwhpn localhost(127.0.0.1) OK 2016-12-22T19:34:35 A qumdgakndpowoga localhost(127.0.0.1) OK 2016-12-22T19:34:35 A wbjdzyaplucvpcl localhost(127.0.0.1) OK Anyone familiar with what this gibberish is?? I'm …