Surely we have a mole who is, or was, a moderator we can inquire with. 
You know, madam, every time someone talks about ISP numbers, I get this certain image in my head, that of Fat Che sitting at the kitchen table, his belly hanging down halfway to the floor, with a pair of scissors cutting out ISP numbers and pasting them into an album, as if postage stamps.
Some seem really obsessed about this.
But there's no reason to be paranoid about franksolich and ISP numbers; I don't bother with them.
One time, a new member showed up here, and I was asked by another moderator if it might be Pedro Picasso. I checked the number, but it meant nothing, nothing at all, to me.
franksolich looks at ISP numbers, but looking at something is different from understanding something.
I didn't need any ISP number, for example, to learn that the Bostonian Drunkard is afflicted with boryborygmia, or that Pedro Picasso is a trimenthylumiac. There's other ways of learning things without being (or trying to be) sneaky and devious about it.