Unknown IP accessing account

PS: my ip is not in the same range as this one so I must assume my internet service is hooked to a different server. http://cqcounter.com/whois/ search shows:

PPPox se1.sfldmi SBC-76-235-176-0-20-0706151953 (NET-76-235-176-0-1) 76.235.176.0 - 76.235.191.255
AT&T Internet Services SBCIS-SBIS-6BLK (NET-76-192-0-0-1) 76.192.0.0 - 76.255.255.255

Searching my IP shows:

PPPoX pool se1.klmzmi SBC-76-235-160-0-20-0706151739 (NET-76-235-160-0-1) 76.235.160.0 - 76.235.175.255
AT&T Internet Services SBCIS-SBIS-6BLK (NET-76-192-0-0-1) 76.192.0.0 - 76.255.255.255

As you can see, I am in a different range of numbers.