On Tue, Sep 14, 2010 at 6:51 PM, Steven Bellovin <smb@cs.columbia.edu> wrote:
No, they bought AT&T, which [...] But yes, SBC is the controlling piece of the new AT&T.
As for the two /8s -- not quite. Back in the 1980s, AT&T got 12/8. We soon learned that we couldn't make good use of it, since multiple levels of subnetting didn't exist. We offered it back to Postel in exchange for 135/8 -- i.e., the equivalent in class B space -- but Postel said to keep 12/8 since no one else could use it, either. This was all long before addresses were tight. When AT&T decided to go into the ISP business, circa 1995, 12/8 was still lying around, unused except for a security experiment I was running.* However, a good chunk of 135/8 went to Lucent (now Alcatel-Lucent) in 1996, though I don't know how much.
---- Thanks; Bill Note that this isn't my regular email account - It's still experimental so far. And Google probably logs and indexes everything you send it.