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IP ranges

IBM Cloud IP ranges

Every IPv4 and IPv6 range that IBM Cloud (AS36351) currently announces on the internet, with CIDR and start/end IP, free to download as TXT or CSV. Data snapshot: 2026-11-02.

IBM Cloud announces 342 IPv4 prefixes covering 3,642,880 addresses, and 73 IPv6 prefixes, through AS36351. The lists below are a snapshot of 2026-11-02 taken from the public BGP routing table, sorted by address and kept as announced.

ASNAS36351
IPv4 prefixes342
IPv4 addresses3,642,880Overlaps are counted once
IPv6 prefixes73
Data snapshot

Download the complete list

The complete list has 415 ranges (IPv4 and IPv6). TXT has one CIDR per line; CSV has the columns cidr, version, start_ip, end_ip and addresses.

Download TXTDownload CSVIPv4 only (TXT)IPv6 only (TXT)

IBM Cloud IPv4 ranges

IPv4 ranges announced by IBM Cloud: CIDR, start and end IP, address count
CIDRStart IP – end IPAddresses
5.10.96.0/195.10.96.0–5.10.127.2558,192
5.83.159.0/245.83.159.0–5.83.159.255256
13.116.64.0/1813.116.64.0–13.116.127.25516,384
13.120.64.0/1813.120.64.0–13.120.127.25516,384
13.121.64.0/1813.121.64.0–13.121.127.25516,384
13.122.64.0/1813.122.64.0–13.122.127.25516,384
43.245.168.0/2443.245.168.0–43.245.168.255256
46.16.184.0/2146.16.184.0–46.16.191.2552,048
50.22.0.0/2150.22.0.0–50.22.7.2552,048
50.22.8.0/2150.22.8.0–50.22.15.2552,048
50.22.16.0/2150.22.16.0–50.22.23.2552,048
50.22.24.0/2150.22.24.0–50.22.31.2552,048
50.22.24.0/2250.22.24.0–50.22.27.2551,024
50.22.32.0/2150.22.32.0–50.22.39.2552,048
50.22.40.0/2150.22.40.0–50.22.47.2552,048
50.22.64.0/2050.22.64.0–50.22.79.2554,096
50.22.128.0/1850.22.128.0–50.22.191.25516,384
50.22.192.0/2150.22.192.0–50.22.199.2552,048
50.22.200.0/2150.22.200.0–50.22.207.2552,048
50.22.208.0/2150.22.208.0–50.22.215.2552,048
50.97.16.0/2350.97.16.0–50.97.17.255512
50.97.32.0/1950.97.32.0–50.97.63.2558,192
52.116.0.0/1852.116.0.0–52.116.63.25516,384
52.116.64.0/1852.116.64.0–52.116.127.25516,384
52.116.128.0/1852.116.128.0–52.116.191.25516,384
52.116.128.0/2052.116.128.0–52.116.143.2554,096
52.116.192.0/1852.116.192.0–52.116.255.25516,384
52.117.0.0/1852.117.0.0–52.117.63.25516,384
52.117.0.0/2052.117.0.0–52.117.15.2554,096
52.117.64.0/1852.117.64.0–52.117.127.25516,384
52.117.128.0/1852.117.128.0–52.117.191.25516,384
52.117.179.0/2452.117.179.0–52.117.179.255256
52.117.192.0/1852.117.192.0–52.117.255.25516,384
52.118.0.0/1852.118.0.0–52.118.63.25516,384
52.118.64.0/1852.118.64.0–52.118.127.25516,384
52.118.128.0/1852.118.128.0–52.118.191.25516,384
52.118.192.0/1852.118.192.0–52.118.255.25516,384
62.84.171.0/2462.84.171.0–62.84.171.255256
64.5.32.0/2164.5.32.0–64.5.39.2552,048
64.5.40.0/2164.5.40.0–64.5.47.2552,048
64.5.48.0/2164.5.48.0–64.5.55.2552,048
66.37.96.0/2466.37.96.0–66.37.96.255256
66.98.128.0/1766.98.128.0–66.98.255.25532,768
66.228.112.0/2066.228.112.0–66.228.127.2554,096
67.15.0.0/1667.15.0.0–67.15.255.25565,536
67.18.0.0/1867.18.0.0–67.18.63.25516,384
67.18.64.0/1867.18.64.0–67.18.127.25516,384
67.18.128.0/1867.18.128.0–67.18.191.25516,384
67.18.192.0/1967.18.192.0–67.18.223.2558,192
67.214.212.0/2467.214.212.0–67.214.212.255256
67.214.223.0/2467.214.223.0–67.214.223.255256
67.228.0.0/1867.228.0.0–67.228.63.25516,384
67.228.64.0/1867.228.64.0–67.228.127.25516,384
67.228.128.0/1867.228.128.0–67.228.191.25516,384
67.228.192.0/1867.228.192.0–67.228.255.25516,384
67.228.252.0/2367.228.252.0–67.228.253.255512
67.228.254.0/2367.228.254.0–67.228.255.255512
69.57.132.0/2269.57.132.0–69.57.135.2551,024
69.57.136.0/2269.57.136.0–69.57.139.2551,024
69.57.140.0/2269.57.140.0–69.57.143.2551,024
69.57.144.0/2269.57.144.0–69.57.147.2551,024
74.86.0.0/1674.86.0.0–74.86.255.25565,536
75.126.0.0/1675.126.0.0–75.126.255.25565,536
75.126.32.0/2175.126.32.0–75.126.39.2552,048
75.126.40.0/2275.126.40.0–75.126.43.2551,024
75.126.48.0/2175.126.48.0–75.126.55.2552,048
75.126.56.0/2275.126.56.0–75.126.59.2551,024
75.126.64.0/2175.126.64.0–75.126.71.2552,048
75.126.72.0/2275.126.72.0–75.126.75.2551,024
75.126.80.0/2075.126.80.0–75.126.95.2554,096
75.126.112.0/2075.126.112.0–75.126.127.2554,096
81.95.144.0/2481.95.144.0–81.95.144.255256
89.38.52.0/2489.38.52.0–89.38.52.255256
89.38.53.0/2489.38.53.0–89.38.53.255256
89.38.54.0/2489.38.54.0–89.38.54.255256
89.144.43.0/2489.144.43.0–89.144.43.255256
103.53.196.0/24103.53.196.0–103.53.196.255256
103.70.48.0/24103.70.48.0–103.70.48.255256
103.106.108.0/24103.106.108.0–103.106.108.255256
103.193.4.0/22103.193.4.0–103.193.7.2551,024
103.197.160.0/22103.197.160.0–103.197.163.2551,024
104.207.183.0/24104.207.183.0–104.207.183.255256
104.207.188.0/24104.207.188.0–104.207.188.255256
108.168.128.0/19108.168.128.0–108.168.159.2558,192
108.168.160.0/19108.168.160.0–108.168.191.2558,192
108.168.254.0/23108.168.254.0–108.168.255.255512
108.229.8.0/21108.229.8.0–108.229.15.2552,048
119.81.0.0/16119.81.0.0–119.81.255.25565,536
119.81.0.0/18119.81.0.0–119.81.63.25516,384
119.81.64.0/18119.81.64.0–119.81.127.25516,384
119.81.128.0/21119.81.128.0–119.81.135.2552,048
119.81.140.0/22119.81.140.0–119.81.143.2551,024
119.81.144.0/21119.81.144.0–119.81.151.2552,048
119.81.192.0/19119.81.192.0–119.81.223.2558,192
128.168.0.0/18128.168.0.0–128.168.63.25516,384
128.168.64.0/18128.168.64.0–128.168.127.25516,384
128.168.128.0/18128.168.128.0–128.168.191.25516,384
128.168.192.0/22128.168.192.0–128.168.195.2551,024
129.35.190.0/24129.35.190.0–129.35.190.255256
129.41.128.0/19129.41.128.0–129.41.159.2558,192
129.41.224.0/19129.41.224.0–129.41.255.2558,192
130.198.0.0/19130.198.0.0–130.198.31.2558,192
130.198.64.0/18130.198.64.0–130.198.127.25516,384
135.90.64.0/18135.90.64.0–135.90.127.25516,384
135.90.128.0/18135.90.128.0–135.90.191.25516,384
141.125.64.0/18141.125.64.0–141.125.127.25516,384
141.125.128.0/18141.125.128.0–141.125.191.25516,384
144.69.0.0/18144.69.0.0–144.69.63.25516,384
144.69.64.0/18144.69.64.0–144.69.127.25516,384
148.59.154.0/24148.59.154.0–148.59.154.255256
149.81.0.0/18149.81.0.0–149.81.63.25516,384
149.81.64.0/18149.81.64.0–149.81.127.25516,384
149.81.128.0/18149.81.128.0–149.81.191.25516,384
149.81.192.0/18149.81.192.0–149.81.255.25516,384
150.112.64.0/18150.112.64.0–150.112.127.25516,384
150.238.0.0/18150.238.0.0–150.238.63.25516,384
150.238.64.0/18150.238.64.0–150.238.127.25516,384
150.238.128.0/18150.238.128.0–150.238.191.25516,384
150.238.192.0/18150.238.192.0–150.238.255.25516,384
150.239.0.0/18150.239.0.0–150.239.63.25516,384
150.239.64.0/18150.239.64.0–150.239.127.25516,384
150.239.128.0/18150.239.128.0–150.239.191.25516,384
150.239.192.0/18150.239.192.0–150.239.255.25516,384
150.240.0.0/18150.240.0.0–150.240.63.25516,384
150.240.64.0/18150.240.64.0–150.240.127.25516,384
150.240.128.0/18150.240.128.0–150.240.191.25516,384
150.240.192.0/18150.240.192.0–150.240.255.25516,384
158.85.64.0/18158.85.64.0–158.85.127.25516,384
158.175.64.0/18158.175.64.0–158.175.127.25516,384
158.175.128.0/18158.175.128.0–158.175.191.25516,384
158.176.0.0/18158.176.0.0–158.176.63.25516,384
158.176.64.0/18158.176.64.0–158.176.127.25516,384
158.176.128.0/18158.176.128.0–158.176.191.25516,384
158.176.192.0/18158.176.192.0–158.176.255.25516,384
158.177.0.0/18158.177.0.0–158.177.63.25516,384
158.177.64.0/18158.177.64.0–158.177.127.25516,384
158.177.128.0/18158.177.128.0–158.177.191.25516,384
158.177.192.0/18158.177.192.0–158.177.255.25516,384
158.231.64.0/18158.231.64.0–158.231.127.25516,384
159.8.64.0/18159.8.64.0–159.8.127.25516,384
159.8.128.0/18159.8.128.0–159.8.191.25516,384
159.8.192.0/18159.8.192.0–159.8.255.25516,384
159.23.64.0/18159.23.64.0–159.23.127.25516,384
159.122.64.0/18159.122.64.0–159.122.127.25516,384
159.122.128.0/18159.122.128.0–159.122.191.25516,384
159.122.192.0/18159.122.192.0–159.122.255.25516,384
159.253.128.0/21159.253.128.0–159.253.135.2552,048
159.253.136.0/21159.253.136.0–159.253.143.2552,048
159.253.144.0/21159.253.144.0–159.253.151.2552,048
161.156.0.0/18161.156.0.0–161.156.63.25516,384
161.156.64.0/18161.156.64.0–161.156.127.25516,384
161.156.128.0/18161.156.128.0–161.156.191.25516,384
161.156.141.0/24161.156.141.0–161.156.141.255256
161.156.192.0/18161.156.192.0–161.156.255.25516,384
161.199.16.0/24161.199.16.0–161.199.16.255256
161.199.86.0/24161.199.86.0–161.199.86.255256
161.202.0.0/19161.202.0.0–161.202.31.2558,192
161.202.64.0/18161.202.64.0–161.202.127.25516,384
161.202.128.0/19161.202.128.0–161.202.159.2558,192
161.202.160.0/19161.202.160.0–161.202.191.2558,192
161.202.192.0/19161.202.192.0–161.202.223.2558,192
161.202.224.0/19161.202.224.0–161.202.255.2558,192
162.133.64.0/18162.133.64.0–162.133.127.25516,384
162.133.128.0/18162.133.128.0–162.133.191.25516,384
163.66.64.0/18163.66.64.0–163.66.127.25516,384
163.68.64.0/18163.68.64.0–163.68.127.25516,384
163.69.64.0/18163.69.64.0–163.69.127.25516,384
163.73.64.0/18163.73.64.0–163.73.127.25516,384
163.74.64.0/18163.74.64.0–163.74.127.25516,384
163.75.64.0/18163.75.64.0–163.75.127.25516,384
163.102.64.0/18163.102.64.0–163.102.127.25516,384
163.107.64.0/18163.107.64.0–163.107.127.25516,384
163.109.64.0/18163.109.64.0–163.109.127.25516,384
165.181.254.0/24165.181.254.0–165.181.254.255256
165.181.255.0/24165.181.255.0–165.181.255.255256
165.192.64.0/18165.192.64.0–165.192.127.25516,384
165.192.128.0/18165.192.128.0–165.192.191.25516,384
167.94.160.0/24167.94.160.0–167.94.160.255256
168.1.0.0/18168.1.0.0–168.1.63.25516,384
168.1.64.0/18168.1.64.0–168.1.127.25516,384
168.1.192.0/18168.1.192.0–168.1.255.25516,384
169.38.0.0/21169.38.0.0–169.38.7.2552,048
169.38.8.0/21169.38.8.0–169.38.15.2552,048
169.38.8.0/22169.38.8.0–169.38.11.2551,024
169.38.12.0/22169.38.12.0–169.38.15.2551,024
169.38.16.0/21169.38.16.0–169.38.23.2552,048
169.38.16.0/22169.38.16.0–169.38.19.2551,024
169.38.24.0/21169.38.24.0–169.38.31.2552,048
169.38.32.0/21169.38.32.0–169.38.39.2552,048
169.38.32.0/22169.38.32.0–169.38.35.2551,024
169.38.36.0/22169.38.36.0–169.38.39.2551,024
169.38.40.0/21169.38.40.0–169.38.47.2552,048
169.38.40.0/22169.38.40.0–169.38.43.2551,024
169.38.44.0/22169.38.44.0–169.38.47.2551,024
169.38.64.0/18169.38.64.0–169.38.127.25516,384
169.38.64.0/19169.38.64.0–169.38.95.2558,192
169.38.96.0/19169.38.96.0–169.38.127.2558,192
169.38.128.0/18169.38.128.0–169.38.191.25516,384
169.38.192.0/21169.38.192.0–169.38.199.2552,048
169.38.200.0/21169.38.200.0–169.38.207.2552,048
169.38.200.0/22169.38.200.0–169.38.203.2551,024
169.38.204.0/22169.38.204.0–169.38.207.2551,024
169.38.208.0/21169.38.208.0–169.38.215.2552,048
169.38.208.0/22169.38.208.0–169.38.211.2551,024
169.38.212.0/22169.38.212.0–169.38.215.2551,024
169.38.216.0/21169.38.216.0–169.38.223.2552,048
169.38.224.0/21169.38.224.0–169.38.231.2552,048
169.38.224.0/22169.38.224.0–169.38.227.2551,024
169.38.228.0/22169.38.228.0–169.38.231.2551,024
169.38.232.0/21169.38.232.0–169.38.239.2552,048
169.38.232.0/22169.38.232.0–169.38.235.2551,024
169.38.236.0/22169.38.236.0–169.38.239.2551,024
169.44.0.0/17169.44.0.0–169.44.127.25532,768
169.44.128.0/17169.44.128.0–169.44.255.25532,768
169.45.0.0/20169.45.0.0–169.45.15.2554,096
169.45.20.0/22169.45.20.0–169.45.23.2551,024
169.45.32.0/19169.45.32.0–169.45.63.2558,192
169.45.64.0/18169.45.64.0–169.45.127.25516,384
169.45.128.0/18169.45.128.0–169.45.191.25516,384
169.45.192.0/18169.45.192.0–169.45.255.25516,384
169.46.0.0/17169.46.0.0–169.46.127.25532,768
169.46.128.0/17169.46.128.0–169.46.255.25532,768
169.47.0.0/18169.47.0.0–169.47.63.25516,384
169.47.64.0/18169.47.64.0–169.47.127.25516,384
169.47.80.0/20169.47.80.0–169.47.95.2554,096
169.47.128.0/18169.47.128.0–169.47.191.25516,384
169.47.192.0/18169.47.192.0–169.47.255.25516,384
169.48.0.0/19169.48.0.0–169.48.31.2558,192
169.48.32.0/24169.48.32.0–169.48.32.255256
169.48.36.0/22169.48.36.0–169.48.39.2551,024
169.48.64.0/18169.48.64.0–169.48.127.25516,384
169.48.80.0/20169.48.80.0–169.48.95.2554,096
169.48.128.0/18169.48.128.0–169.48.191.25516,384
169.48.144.0/20169.48.144.0–169.48.159.2554,096
169.48.192.0/18169.48.192.0–169.48.255.25516,384
169.50.0.0/18169.50.0.0–169.50.63.25516,384
169.50.64.0/18169.50.64.0–169.50.127.25516,384
169.50.128.0/18169.50.128.0–169.50.191.25516,384
169.50.192.0/18169.50.192.0–169.50.255.25516,384
169.51.0.0/19169.51.0.0–169.51.31.2558,192
169.51.32.0/19169.51.32.0–169.51.63.2558,192
169.51.128.0/19169.51.128.0–169.51.159.2558,192
169.51.160.0/19169.51.160.0–169.51.191.2558,192
169.53.0.0/18169.53.0.0–169.53.63.25516,384
169.53.160.0/19169.53.160.0–169.53.191.2558,192
169.53.192.0/18169.53.192.0–169.53.255.25516,384
169.54.64.0/18169.54.64.0–169.54.127.25516,384
169.54.192.0/18169.54.192.0–169.54.255.25516,384
169.55.0.0/18169.55.0.0–169.55.63.25516,384
169.55.60.0/22169.55.60.0–169.55.63.2551,024
169.55.64.0/18169.55.64.0–169.55.127.25516,384
169.55.128.0/18169.55.128.0–169.55.191.25516,384
169.55.192.0/18169.55.192.0–169.55.255.25516,384
169.56.0.0/18169.56.0.0–169.56.63.25516,384
169.57.128.0/17169.57.128.0–169.57.255.25532,768
169.59.0.0/18169.59.0.0–169.59.63.25516,384
169.59.64.0/18169.59.64.0–169.59.127.25516,384
169.59.128.0/18169.59.128.0–169.59.191.25516,384
169.59.192.0/18169.59.192.0–169.59.255.25516,384
169.60.0.0/18169.60.0.0–169.60.63.25516,384
169.60.64.0/18169.60.64.0–169.60.127.25516,384
169.60.128.0/18169.60.128.0–169.60.191.25516,384
169.60.192.0/18169.60.192.0–169.60.255.25516,384
169.60.208.0/20169.60.208.0–169.60.223.2554,096
169.60.248.0/21169.60.248.0–169.60.255.2552,048
169.61.0.0/18169.61.0.0–169.61.63.25516,384
169.61.64.0/18169.61.64.0–169.61.127.25516,384
169.61.128.0/18169.61.128.0–169.61.191.25516,384
169.61.192.0/18169.61.192.0–169.61.255.25516,384
169.62.0.0/18169.62.0.0–169.62.63.25516,384
169.62.64.0/18169.62.64.0–169.62.127.25516,384
169.62.128.0/18169.62.128.0–169.62.191.25516,384
169.62.192.0/18169.62.192.0–169.62.255.25516,384
169.63.0.0/18169.63.0.0–169.63.63.25516,384
169.63.64.0/18169.63.64.0–169.63.127.25516,384
169.63.128.0/18169.63.128.0–169.63.191.25516,384
169.63.192.0/18169.63.192.0–169.63.255.25516,384
170.225.114.0/24170.225.114.0–170.225.114.255256
170.225.160.0/24170.225.160.0–170.225.160.255256
173.192.0.0/18173.192.0.0–173.192.63.25516,384
173.192.64.0/18173.192.64.0–173.192.127.25516,384
173.192.72.0/22173.192.72.0–173.192.75.2551,024
173.192.248.0/21173.192.248.0–173.192.255.2552,048
173.192.254.0/24173.192.254.0–173.192.254.255256
173.193.0.0/18173.193.0.0–173.193.63.25516,384
173.193.128.0/18173.193.128.0–173.193.191.25516,384
173.247.105.0/24173.247.105.0–173.247.105.255256
173.247.107.0/24173.247.107.0–173.247.107.255256
173.247.115.0/24173.247.115.0–173.247.115.255256
174.36.0.0/18174.36.0.0–174.36.63.25516,384
174.36.64.0/18174.36.64.0–174.36.127.25516,384
174.36.128.0/18174.36.128.0–174.36.191.25516,384
174.37.0.0/18174.37.0.0–174.37.63.25516,384
174.37.64.0/18174.37.64.0–174.37.127.25516,384
174.37.128.0/18174.37.128.0–174.37.191.25516,384
174.120.0.0/14174.120.0.0–174.123.255.255262,144
174.133.0.0/16174.133.0.0–174.133.255.25565,536
174.133.116.0/22174.133.116.0–174.133.119.2551,024
185.10.228.0/22185.10.228.0–185.10.231.2551,024
185.13.56.0/22185.13.56.0–185.13.59.2551,024
185.150.176.0/24185.150.176.0–185.150.176.255256
185.150.177.0/24185.150.177.0–185.150.177.255256
185.228.36.0/22185.228.36.0–185.228.39.2551,024
185.228.36.0/24185.228.36.0–185.228.36.255256
185.228.37.0/24185.228.37.0–185.228.37.255256
185.228.38.0/24185.228.38.0–185.228.38.255256
185.228.39.0/24185.228.39.0–185.228.39.255256
185.228.68.0/22185.228.68.0–185.228.71.2551,024
192.107.243.0/24192.107.243.0–192.107.243.255256
192.255.0.0/19192.255.0.0–192.255.31.2558,192
192.255.30.0/24192.255.30.0–192.255.30.255256
192.255.32.0/19192.255.32.0–192.255.63.2558,192
198.23.96.0/21198.23.96.0–198.23.103.2552,048
198.23.104.0/22198.23.104.0–198.23.107.2551,024
198.23.112.0/20198.23.112.0–198.23.127.2554,096
199.20.36.0/24199.20.36.0–199.20.36.255256
199.20.38.0/24199.20.38.0–199.20.38.255256
199.20.39.0/24199.20.39.0–199.20.39.255256
199.166.36.0/23199.166.36.0–199.166.37.255512
199.187.172.0/22199.187.172.0–199.187.175.2551,024
199.244.72.0/22199.244.72.0–199.244.75.2551,024
203.57.74.0/23203.57.74.0–203.57.75.255512
206.253.232.0/21206.253.232.0–206.253.239.2552,048
207.44.128.0/17207.44.128.0–207.44.255.25532,768
207.218.192.0/18207.218.192.0–207.218.255.25516,384
207.231.148.0/23207.231.148.0–207.231.149.255512
207.231.152.0/23207.231.152.0–207.231.153.255512
207.231.156.0/23207.231.156.0–207.231.157.255512
207.231.158.0/23207.231.158.0–207.231.159.255512
208.43.0.0/18208.43.0.0–208.43.63.25516,384
208.43.128.0/18208.43.128.0–208.43.191.25516,384
208.43.192.0/19208.43.192.0–208.43.223.2558,192
208.43.224.0/19208.43.224.0–208.43.255.2558,192
208.101.0.0/18208.101.0.0–208.101.63.25516,384
209.85.0.0/17209.85.0.0–209.85.127.25532,768
216.12.192.0/19216.12.192.0–216.12.223.2558,192
216.12.217.0/24216.12.217.0–216.12.217.255256
216.127.64.0/19216.127.64.0–216.127.95.2558,192
216.127.71.0/24216.127.71.0–216.127.71.255256
216.185.96.0/19216.185.96.0–216.185.127.2558,192
216.234.224.0/24216.234.224.0–216.234.224.255256
216.234.226.0/23216.234.226.0–216.234.227.255512

All 342 ranges are listed.

IBM Cloud IPv6 ranges

IPv6 ranges announced by IBM Cloud: CIDR, start and end IP, address count
CIDRStart IP – end IPAddresses
2001:df5:9000::/482001:df5:9000::–2001:df5:9000:ffff:ffff:ffff:ffff:ffff280
2401:c900:1000::/402401:c900:1000::–2401:c900:10ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:1100::/402401:c900:1100::–2401:c900:11ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:1400::/402401:c900:1400::–2401:c900:14ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:1500::/402401:c900:1500::–2401:c900:15ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:1800::/402401:c900:1800::–2401:c900:18ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:1f00::/402401:c900:1f00::–2401:c900:1fff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2000::/402401:c900:2000::–2401:c900:20ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2100::/402401:c900:2100::–2401:c900:21ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2700::/402401:c900:2700::–2401:c900:27ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2800::/402401:c900:2800::–2401:c900:28ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2900::/402401:c900:2900::–2401:c900:29ff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2d00::/402401:c900:2d00::–2401:c900:2dff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2e00::/402401:c900:2e00::–2401:c900:2eff:ffff:ffff:ffff:ffff:ffff288
2401:c900:2f00::/402401:c900:2f00::–2401:c900:2fff:ffff:ffff:ffff:ffff:ffff288
2401:c900:3000::/402401:c900:3000::–2401:c900:30ff:ffff:ffff:ffff:ffff:ffff288
2402:2f80::/482402:2f80::–2402:2f80:0:ffff:ffff:ffff:ffff:ffff280
2402:b180:1::/482402:b180:1::–2402:b180:1:ffff:ffff:ffff:ffff:ffff280
2403:1480:1000::/362403:1480:1000::–2403:1480:1fff:ffff:ffff:ffff:ffff:ffff292
2403:a280:8000::/362403:a280:8000::–2403:a280:8fff:ffff:ffff:ffff:ffff:ffff292
2403:ad80:20::/482403:ad80:20::–2403:ad80:20:ffff:ffff:ffff:ffff:ffff280
2602:ff1c:1::/482602:ff1c:1::–2602:ff1c:1:ffff:ffff:ffff:ffff:ffff280
2602:ff84:1::/482602:ff84:1::–2602:ff84:1:ffff:ffff:ffff:ffff:ffff280
2602:ff84:c::/482602:ff84:c::–2602:ff84:c:ffff:ffff:ffff:ffff:ffff280
2602:ff84:11::/482602:ff84:11::–2602:ff84:11:ffff:ffff:ffff:ffff:ffff280
2602:ff84:12::/482602:ff84:12::–2602:ff84:12:ffff:ffff:ffff:ffff:ffff280
2607:f0d0::/322607:f0d0::–2607:f0d0:ffff:ffff:ffff:ffff:ffff:ffff296
2607:f0d0:3::/482607:f0d0:3::–2607:f0d0:3:ffff:ffff:ffff:ffff:ffff280
2607:f0d0:6::/642607:f0d0:6::–2607:f0d0:6:0:ffff:ffff:ffff:ffff264
2607:f0d0:7::/482607:f0d0:7::–2607:f0d0:7:ffff:ffff:ffff:ffff:ffff280
2607:f0d0:1000::/402607:f0d0:1000::–2607:f0d0:10ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1100::/402607:f0d0:1100::–2607:f0d0:11ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1900::/402607:f0d0:1900::–2607:f0d0:19ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1a00::/402607:f0d0:1a00::–2607:f0d0:1aff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1b00::/402607:f0d0:1b00::–2607:f0d0:1bff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1c00::/402607:f0d0:1c00::–2607:f0d0:1cff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1d00::/402607:f0d0:1d00::–2607:f0d0:1dff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1e00::/402607:f0d0:1e00::–2607:f0d0:1eff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:1f00::/402607:f0d0:1f00::–2607:f0d0:1fff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:2600::/402607:f0d0:2600::–2607:f0d0:26ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:2700::/402607:f0d0:2700::–2607:f0d0:27ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:2900::/402607:f0d0:2900::–2607:f0d0:29ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3500::/402607:f0d0:3500::–2607:f0d0:35ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3600::/402607:f0d0:3600::–2607:f0d0:36ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3700::/402607:f0d0:3700::–2607:f0d0:37ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3800::/402607:f0d0:3800::–2607:f0d0:38ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3900::/402607:f0d0:3900::–2607:f0d0:39ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3a00::/402607:f0d0:3a00::–2607:f0d0:3aff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3c00::/402607:f0d0:3c00::–2607:f0d0:3cff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:3d00::/402607:f0d0:3d00::–2607:f0d0:3dff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:4100::/402607:f0d0:4100::–2607:f0d0:41ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:4200::/402607:f0d0:4200::–2607:f0d0:42ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:4500::/402607:f0d0:4500::–2607:f0d0:45ff:ffff:ffff:ffff:ffff:ffff288
2607:f0d0:4600::/402607:f0d0:4600::–2607:f0d0:46ff:ffff:ffff:ffff:ffff:ffff288
2620:11b:3002::/482620:11b:3002::–2620:11b:3002:ffff:ffff:ffff:ffff:ffff280
2803:2f40:ffff::/482803:2f40:ffff::–2803:2f40:ffff:ffff:ffff:ffff:ffff:ffff280
2a03:8180:1100::/402a03:8180:1100::–2a03:8180:11ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1200::/402a03:8180:1200::–2a03:8180:12ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1300::/402a03:8180:1300::–2a03:8180:13ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1400::/402a03:8180:1400::–2a03:8180:14ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1800::/402a03:8180:1800::–2a03:8180:18ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1900::/402a03:8180:1900::–2a03:8180:19ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1c00::/402a03:8180:1c00::–2a03:8180:1cff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1d00::/402a03:8180:1d00::–2a03:8180:1dff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:1f00::/402a03:8180:1f00::–2a03:8180:1fff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2000::/402a03:8180:2000::–2a03:8180:20ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2100::/402a03:8180:2100::–2a03:8180:21ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2200::/402a03:8180:2200::–2a03:8180:22ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2700::/402a03:8180:2700::–2a03:8180:27ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2800::/402a03:8180:2800::–2a03:8180:28ff:ffff:ffff:ffff:ffff:ffff288
2a03:8180:2900::/402a03:8180:2900::–2a03:8180:29ff:ffff:ffff:ffff:ffff:ffff288
2a04:f400:3000::/482a04:f400:3000::–2a04:f400:3000:ffff:ffff:ffff:ffff:ffff280
2a05:dfc7:30::/482a05:dfc7:30::–2a05:dfc7:30:ffff:ffff:ffff:ffff:ffff280

All 73 ranges are listed.

About the IBM Cloud IP range data

  • ASNs and holders

    IBM Cloud announces its prefixes from AS36351. Holders in the registry: AS36351 (SOFTLAYER - IBM Cloud).

  • What the list contains

    The ranges are the prefixes these ASNs announce in the public BGP routing table (obtained through RIPEstat), with adjacent blocks left unmerged. This is not an ownership record: it can include prefixes of customers and leased address space, and it can miss routes that very few peers see. Snapshot of 2026-11-02.

  • Typical uses

    Allow or block traffic from IBM Cloud in a firewall, WAF or nginx, label source IPs in your logs by network, or test with a CIDR match whether an IP belongs to IBM Cloud. Remember that cloud and carrier address space also runs the services of customers, so blocking a whole network can hit unrelated sites.

How to use the IBM Cloud IP list

  1. Start with the tables above: one for IPv4 and one for IPv6, each row with CIDR, start IP – end IP and address count.
  2. Choose Download TXT or Download CSV for the complete list. The file has all 415 ranges, not only the first rows shown on the page.
  3. Import the TXT as one address set into your firewall, router or ipset, or paste the CIDRs into a cloud security group rule.
  4. Check the snapshot date (2026-11-02) before using it in production. Cloud ranges change often, so compare with the official range file published by the provider.

IBM Cloud IP ranges: frequently asked questions

How many IP ranges does IBM Cloud have?

As of 2026-11-02, IBM Cloud announces 342 IPv4 prefixes covering 3,642,880 addresses and 73 IPv6 prefixes in the public BGP routing table, through AS36351.

What is the ASN of IBM Cloud?

IBM Cloud uses AS36351. Holders in the registry: AS36351 (SOFTLAYER - IBM Cloud). Large organisations often run several ASNs, and this page merges the ones listed here.

How do I use the IBM Cloud IP list for a firewall allowlist or blocklist?

Download the TXT file (one CIDR per line) and import it into ipset, nftables, an nginx allow or deny include, a router address list or a cloud security group. Import the 415 ranges as one address set rather than as separate rules. The address space of IBM Cloud also hosts the services of its customers, so blocking all of it can cut off unrelated sites.

How often is the IBM Cloud IP list updated?

The list is a snapshot of 2026-11-02, regenerated about once a week from public BGP data (RIPEstat). Announcements change every day, so download it again before using it in production, and for cloud providers also compare it with the official range file they publish.

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