12.171.24.156 address profile

AT&T Services, Inc. ATT (NET-12-0-0-0-1) 12.0.0.0 - 12.255.255.255
AT&T Services, Inc. ATTSVCM-12-171-16-0 (NET-12-171-16-0-1) 12.171.16.0 - 12.171.31.255
VERTEX PHARMACEUTICALS VERTEX-P44-24-128 (NET-12-171-24-128-1) 12.171.24.128 - 12.171.24.191