If you like me you’re interested to know the ip ranges that windows azure uses to connect to the internet 🙂 this is the right post 😉
Do not assume that traffic originating from these IP address ranges is trustworthy.
You can download Windows Azure Datacenter IP Ranges xml from the download center.
Here’s the list updated on 12th June 2014
<?xml version="1.0" encoding="utf-8"?>
<AzurePublicIpAddresses xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Region Name="europewest">
<IpRange Subnet="157.55.9.112/28" />
<IpRange Subnet="157.55.10.0/26" />
<IpRange Subnet="65.52.128.0/19" />
<IpRange Subnet="94.245.97.0/24" />
<IpRange Subnet="137.116.192.0/19" />
<IpRange Subnet="157.55.8.64/26" />
<IpRange Subnet="157.55.8.128/27" />
<IpRange Subnet="157.55.8.160/28" />
<IpRange Subnet="168.63.0.0/19" />
<IpRange Subnet="168.63.96.0/19" />
<IpRange Subnet="193.149.80.0/22" />
<IpRange Subnet="213.199.128.0/21" />
<IpRange Subnet="213.199.136.0/22" />
<IpRange Subnet="213.199.180.32/28" />
<IpRange Subnet="213.199.180.96/27" />
<IpRange Subnet="213.199.180.192/26" />
<IpRange Subnet="213.199.183.0/24" />
<IpRange Subnet="23.97.128.0/17" />
<IpRange Subnet="23.100.0.0/20" />
<IpRange Subnet="104.40.128.0/19" />
<IpRange Subnet="137.117.128.0/17" />
<IpRange Subnet="168.61.56.0/21" />
<IpRange Subnet="191.233.64.0/18" />
<IpRange Subnet="191.237.232.0/27" />
<IpRange Subnet="191.237.232.64/26" />
<IpRange Subnet="191.237.233.0/24" />
<IpRange Subnet="191.237.234.0/23" />
<IpRange Subnet="193.149.84.0/22" />
</Region>
<Region Name="useast">
<IpRange Subnet="23.96.0.0/18" />
<IpRange Subnet="23.96.64.0/28" />
<IpRange Subnet="23.96.64.64/26" />
<IpRange Subnet="23.96.64.128/27" />
<IpRange Subnet="23.96.64.160/28" />
<IpRange Subnet="23.96.80.0/20" />
<IpRange Subnet="23.96.96.0/19" />
<IpRange Subnet="23.100.16.0/20" />
<IpRange Subnet="137.116.112.0/20" />
<IpRange Subnet="137.117.32.0/19" />
<IpRange Subnet="137.117.64.0/18" />
<IpRange Subnet="137.135.64.0/18" />
<IpRange Subnet="157.56.176.0/21" />
<IpRange Subnet="168.61.32.0/20" />
<IpRange Subnet="168.61.48.0/21" />
<IpRange Subnet="168.62.32.0/19" />
<IpRange Subnet="168.62.160.0/19" />
<IpRange Subnet="138.91.96.0/25" />
<IpRange Subnet="138.91.96.128/26" />
<IpRange Subnet="138.91.96.192/28" />
<IpRange Subnet="138.91.112.0/20" />
<IpRange Subnet="191.234.32.0/19" />
<IpRange Subnet="191.236.0.0/19" />
<IpRange Subnet="191.238.0.0/25" />
<IpRange Subnet="191.238.0.128/26" />
<IpRange Subnet="191.238.0.192/27" />
<IpRange Subnet="191.238.1.0/24" />
<IpRange Subnet="191.238.2.0/23" />
<IpRange Subnet="191.238.4.0/24" />
<IpRange Subnet="191.238.8.0/21" />
<IpRange Subnet="191.238.16.0/20" />
<IpRange Subnet="191.238.32.0/19" />
</Region>
<Region Name="uswest">
<IpRange Subnet="23.100.32.0/20" />
<IpRange Subnet="137.116.184.0/21" />
<IpRange Subnet="137.117.0.0/19" />
<IpRange Subnet="137.117.208.128/28" />
<IpRange Subnet="137.135.0.0/18" />
<IpRange Subnet="138.91.64.0/19" />
<IpRange Subnet="157.56.160.0/21" />
<IpRange Subnet="168.61.0.0/19" />
<IpRange Subnet="168.61.64.0/20" />
<IpRange Subnet="168.62.0.0/19" />
<IpRange Subnet="168.62.192.0/19" />
<IpRange Subnet="168.63.88.0/24" />
<IpRange Subnet="23.99.64.0/19" />
<IpRange Subnet="138.91.128.0/24" />
<IpRange Subnet="138.91.129.0/26" />
<IpRange Subnet="138.91.129.64/28" />
<IpRange Subnet="138.91.136.0/21" />
<IpRange Subnet="138.91.144.0/20" />
<IpRange Subnet="138.91.160.0/19" />
<IpRange Subnet="138.91.192.0/21" />
<IpRange Subnet="138.91.224.0/19" />
<IpRange Subnet="191.238.70.0/23" />
<IpRange Subnet="23.99.0.0/19" />
<IpRange Subnet="23.99.32.0/25" />
<IpRange Subnet="23.99.32.128/28" />
<IpRange Subnet="23.99.33.0/28" />
<IpRange Subnet="23.99.34.0/25" />
<IpRange Subnet="23.99.34.128/26" />
<IpRange Subnet="23.99.34.192/27" />
<IpRange Subnet="23.99.35.0/24" />
<IpRange Subnet="23.99.36.0/24" />
<IpRange Subnet="23.99.37.0/26" />
<IpRange Subnet="23.99.37.80/28" />
<IpRange Subnet="23.99.38.0/24" />
<IpRange Subnet="23.99.40.0/24" />
<IpRange Subnet="23.99.48.0/20" />
<IpRange Subnet="65.52.112.0/20" />
<IpRange Subnet="104.40.0.0/19" />
<IpRange Subnet="168.63.89.0/25" />
<IpRange Subnet="168.63.89.128/26" />
<IpRange Subnet="191.236.64.0/18" />
<IpRange Subnet="191.239.0.0/18" />
</Region>
<Region Name="usnorth">
<IpRange Subnet="23.100.72.0/21" />
<IpRange Subnet="65.52.0.0/19" />
<IpRange Subnet="65.52.192.0/19" />
<IpRange Subnet="65.52.48.0/20" />
<IpRange Subnet="209.240.220.0/23" />
<IpRange Subnet="65.52.106.16/28" />
<IpRange Subnet="65.52.106.32/27" />
<IpRange Subnet="65.52.106.64/26" />
<IpRange Subnet="65.52.106.128/25" />
<IpRange Subnet="65.52.107.0/28" />
<IpRange Subnet="65.52.232.0/21" />
<IpRange Subnet="65.52.240.0/21" />
<IpRange Subnet="157.55.24.0/21" />
<IpRange Subnet="157.55.60.224/27" />
<IpRange Subnet="157.55.73.32/28" />
<IpRange Subnet="157.55.136.0/21" />
<IpRange Subnet="157.55.151.0/28" />
<IpRange Subnet="157.55.160.0/20" />
<IpRange Subnet="157.55.208.0/20" />
<IpRange Subnet="157.55.252.0/22" />
<IpRange Subnet="157.56.8.0/21" />
<IpRange Subnet="157.56.24.160/27" />
<IpRange Subnet="157.56.24.192/28" />
<IpRange Subnet="157.56.28.0/22" />
<IpRange Subnet="168.62.96.0/19" />
<IpRange Subnet="168.62.224.0/20" />
<IpRange Subnet="168.62.240.0/21" />
<IpRange Subnet="168.62.248.0/22" />
<IpRange Subnet="207.46.192.0/20" />
<IpRange Subnet="23.96.128.0/17" />
<IpRange Subnet="23.98.48.0/25" />
<IpRange Subnet="23.98.48.128/26" />
<IpRange Subnet="23.98.48.192/27" />
<IpRange Subnet="23.98.48.224/28" />
<IpRange Subnet="23.98.49.0/24" />
<IpRange Subnet="23.98.50.0/23" />
<IpRange Subnet="23.98.52.0/23" />
<IpRange Subnet="23.98.54.0/24" />
<IpRange Subnet="23.98.55.0/26" />
<IpRange Subnet="191.233.128.0/20" />
<IpRange Subnet="191.236.128.0/18" />
</Region>
<Region Name="europenorth">
<IpRange Subnet="65.52.64.0/20" />
<IpRange Subnet="65.52.224.0/21" />
<IpRange Subnet="65.52.248.0/21" />
<IpRange Subnet="94.245.88.0/21" />
<IpRange Subnet="94.245.104.0/21" />
<IpRange Subnet="94.245.112.0/20" />
<IpRange Subnet="137.116.224.0/19" />
<IpRange Subnet="157.55.3.0/24" />
<IpRange Subnet="157.55.230.160/27" />
<IpRange Subnet="168.61.80.0/20" />
<IpRange Subnet="168.61.96.0/19" />
<IpRange Subnet="168.63.32.0/19" />
<IpRange Subnet="168.63.64.0/20" />
<IpRange Subnet="168.63.80.0/21" />
<IpRange Subnet="168.63.92.0/22" />
<IpRange Subnet="193.149.88.0/21" />
<IpRange Subnet="23.100.48.0/20" />
<IpRange Subnet="23.102.0.0/18" />
<IpRange Subnet="137.135.128.0/17" />
<IpRange Subnet="138.91.48.0/20" />
<IpRange Subnet="191.235.128.0/18" />
<IpRange Subnet="191.235.192.0/24" />
<IpRange Subnet="191.235.193.0/27" />
<IpRange Subnet="191.235.193.64/27" />
<IpRange Subnet="191.235.193.96/28" />
<IpRange Subnet="191.235.194.0/23" />
<IpRange Subnet="191.235.208.0/20" />
<IpRange Subnet="191.235.255.0/26" />
<IpRange Subnet="191.235.255.64/27" />
<IpRange Subnet="191.235.255.128/25" />
<IpRange Subnet="191.237.192.0/23" />
<IpRange Subnet="191.237.194.0/24" />
<IpRange Subnet="191.237.208.0/20" />
<IpRange Subnet="191.238.96.0/19" />
<IpRange Subnet="191.239.208.0/20" />
</Region>
<Region Name="asiaeast">
<IpRange Subnet="23.98.32.0/21" />
<IpRange Subnet="23.98.40.0/22" />
<IpRange Subnet="23.100.88.0/21" />
<IpRange Subnet="65.52.160.0/19" />
<IpRange Subnet="111.221.64.0/22" />
<IpRange Subnet="111.221.69.0/25" />
<IpRange Subnet="134.170.192.0/21" />
<IpRange Subnet="137.116.160.0/20" />
<IpRange Subnet="168.63.128.0/19" />
<IpRange Subnet="168.63.192.0/19" />
<IpRange Subnet="207.46.67.160/27" />
<IpRange Subnet="207.46.67.192/27" />
<IpRange Subnet="207.46.72.0/26" />
<IpRange Subnet="207.46.77.224/28" />
<IpRange Subnet="207.46.87.0/24" />
<IpRange Subnet="207.46.89.16/28" />
<IpRange Subnet="207.46.95.32/27" />
<IpRange Subnet="207.46.128.0/19" />
<IpRange Subnet="23.97.64.0/20" />
<IpRange Subnet="23.97.80.0/28" />
<IpRange Subnet="23.99.96.0/19" />
<IpRange Subnet="191.234.2.16/28" />
<IpRange Subnet="191.234.2.32/27" />
<IpRange Subnet="191.234.2.64/26" />
<IpRange Subnet="191.234.2.128/26" />
<IpRange Subnet="191.234.3.0/24" />
<IpRange Subnet="191.234.16.0/20" />
</Region>
<Region Name="asiasoutheast">
<IpRange Subnet="23.97.48.0/20" />
<IpRange Subnet="23.100.112.0/21" />
<IpRange Subnet="111.221.16.0/21" />
<IpRange Subnet="111.221.80.0/20" />
<IpRange Subnet="111.221.96.0/20" />
<IpRange Subnet="137.116.128.0/19" />
<IpRange Subnet="138.91.32.0/20" />
<IpRange Subnet="168.63.160.0/19" />
<IpRange Subnet="168.63.224.0/19" />
<IpRange Subnet="207.46.48.0/20" />
<IpRange Subnet="23.98.64.0/20" />
<IpRange Subnet="168.63.90.0/27" />
<IpRange Subnet="168.63.90.32/28" />
<IpRange Subnet="168.63.90.64/27" />
<IpRange Subnet="191.238.64.0/25" />
<IpRange Subnet="191.238.64.128/27" />
<IpRange Subnet="191.238.64.160/28" />
<IpRange Subnet="207.46.224.0/20" />
</Region>
<Region Name="ussouth">
<IpRange Subnet="65.52.32.0/21" />
<IpRange Subnet="65.54.48.0/22" />
<IpRange Subnet="65.54.52.0/26" />
<IpRange Subnet="65.54.52.64/27" />
<IpRange Subnet="65.54.52.128/25" />
<IpRange Subnet="65.54.53.0/24" />
<IpRange Subnet="65.54.54.0/23" />
<IpRange Subnet="65.55.64.0/20" />
<IpRange Subnet="65.55.80.0/21" />
<IpRange Subnet="65.55.88.0/22" />
<IpRange Subnet="65.55.92.0/23" />
<IpRange Subnet="65.55.94.0/24" />
<IpRange Subnet="65.55.95.0/26" />
<IpRange Subnet="65.55.95.64/27" />
<IpRange Subnet="65.55.95.128/25" />
<IpRange Subnet="70.37.48.0/20" />
<IpRange Subnet="70.37.64.0/19" />
<IpRange Subnet="70.37.96.0/20" />
<IpRange Subnet="70.37.112.0/22" />
<IpRange Subnet="70.37.116.0/23" />
<IpRange Subnet="70.37.118.0/24" />
<IpRange Subnet="70.37.119.64/26" />
<IpRange Subnet="70.37.119.128/26" />
<IpRange Subnet="70.37.119.208/28" />
<IpRange Subnet="70.37.119.224/27" />
<IpRange Subnet="70.37.120.0/22" />
<IpRange Subnet="70.37.124.0/23" />
<IpRange Subnet="70.37.126.0/26" />
<IpRange Subnet="70.37.126.64/27" />
<IpRange Subnet="70.37.126.128/25" />
<IpRange Subnet="70.37.127.0/26" />
<IpRange Subnet="70.37.127.240/28" />
<IpRange Subnet="70.37.160.0/21" />
<IpRange Subnet="157.55.80.0/21" />
<IpRange Subnet="157.55.103.32/27" />
<IpRange Subnet="157.55.153.224/28" />
<IpRange Subnet="157.55.176.0/20" />
<IpRange Subnet="157.55.192.0/21" />
<IpRange Subnet="157.55.200.0/22" />
<IpRange Subnet="168.62.128.0/19" />
<IpRange Subnet="23.98.128.0/19" />
<IpRange Subnet="23.98.160.0/23" />
<IpRange Subnet="23.98.162.0/28" />
<IpRange Subnet="23.98.162.32/28" />
<IpRange Subnet="23.98.162.64/26" />
<IpRange Subnet="23.98.162.128/28" />
<IpRange Subnet="23.98.162.176/28" />
<IpRange Subnet="23.98.164.0/23" />
<IpRange Subnet="23.98.167.0/24" />
<IpRange Subnet="23.98.169.0/24" />
<IpRange Subnet="23.98.176.0/20" />
<IpRange Subnet="23.98.192.0/25" />
<IpRange Subnet="23.98.208.0/20" />
<IpRange Subnet="23.98.255.0/27" />
<IpRange Subnet="23.98.255.32/28" />
<IpRange Subnet="23.98.255.64/26" />
<IpRange Subnet="23.100.120.0/21" />
<IpRange Subnet="23.102.128.0/18" />
<IpRange Subnet="191.238.128.0/19" />
<IpRange Subnet="191.238.160.0/20" />
<IpRange Subnet="191.238.224.0/19" />
</Region>
<Region Name="japanwest">
<IpRange Subnet="23.98.56.0/26" />
<IpRange Subnet="23.98.56.64/27" />
<IpRange Subnet="23.98.56.96/28" />
<IpRange Subnet="23.98.56.128/26" />
<IpRange Subnet="23.100.104.0/21" />
<IpRange Subnet="138.91.16.0/20" />
<IpRange Subnet="191.233.32.0/19" />
<IpRange Subnet="191.237.236.0/24" />
<IpRange Subnet="191.238.80.0/20" />
</Region>
<Region Name="japaneast">
<IpRange Subnet="23.98.57.0/25" />
<IpRange Subnet="23.98.57.128/27" />
<IpRange Subnet="23.100.96.0/21" />
<IpRange Subnet="138.91.0.0/20" />
<IpRange Subnet="191.234.138.0/24" />
<IpRange Subnet="23.102.64.0/20" />
<IpRange Subnet="191.237.240.0/28" />
<IpRange Subnet="191.237.241.0/24" />
</Region>
<Region Name="brazilsouth">
<IpRange Subnet="23.97.96.0/20" />
<IpRange Subnet="23.97.112.0/25" />
<IpRange Subnet="23.97.112.128/28" />
<IpRange Subnet="191.237.248.0/21" />
</Region>
</AzurePublicIpAddresses>
.Net Diaries 