AS16417 Cisco Systems Ironport Division

216.71.140.0 ~ 216.71.150.255

68.232.140.0 ~ 68.232.149.255

216.71.128.0/21

23.90.96.0 ~ 23.90.101.255

23.90.124.0/22

68.232.128.0/22

68.232.134.0 ~ 68.232.137.255

139.138.24.0/22

139.138.32.0/22

139.138.38.0 ~ 139.138.41.255

139.138.56.0/22

184.94.248.0/22

207.54.84.0/22

207.54.92.0/22

216.71.152.0/22

68.232.153.0 ~ 68.232.155.255

207.54.80.0 ~ 207.54.82.255

208.90.56.0 ~ 208.90.58.255

23.90.112.0/23

68.232.157.0 ~ 68.232.158.255