AS209242 CLOUDFLARESPECTRUM Cloudflare London, LLC

CLOUDFLARESPECTRUM Cloudflare London, LLC · registered in the United States

IPv4 addresses96,768233 prefixes · 0.003% of announced IPv4

Rank in United States#640largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,928of 79,396 networks with IPv4

IPv64 x /32 (262,185 x /48)21 prefixes

CountryUnited States18,679 ASNs registered there

Open AS209242 in ASN lookup Look up an IP in this network (5.10.244.1) All networks in United States

IPv4 prefixes

All 233 prefixes, in address order.

5.10.244.0/22
5.175.141.0/24
5.226.179.0/24
5.226.181.0/24
14.102.228.0/23
23.167.152.0/24
23.178.112.0/24
23.247.163.0/24
25.25.25.0/24
25.26.27.0/24
25.129.196.0/22
27.50.48.0/23
31.12.75.0/24
31.43.179.0/24
44.31.142.0/24
45.12.30.0/23
45.80.108.0/24
45.80.110.0/23
45.81.58.0/24
45.85.118.0/23
45.95.241.0/24
45.131.4.0/22
45.131.208.0/22
45.135.235.0/24
45.142.120.0/24
45.149.12.0/24
45.194.53.0/24
46.202.30.0/24
62.72.166.0/24
62.169.155.0/24
64.69.24.0/23
66.45.118.0/24
66.81.247.0/24
66.81.255.0/24
66.94.32.0/20
66.225.252.0/24
68.169.48.0/20
69.48.218.0/24
69.89.0.0/20
72.52.113.0/24
74.49.214.0/23
74.204.59.0/24
74.205.180.0/24
77.37.33.0/24
77.74.228.0/24
77.75.199.0/24
77.232.140.0/24
80.93.202.0/24
83.118.224.0/22
85.237.216.0/24
86.38.214.0/24
88.216.66.0/23
89.47.56.0/23
89.116.46.0/24
89.116.161.0/24
89.116.180.0/24
89.116.250.0/24
89.117.112.0/24
89.207.18.0/24
91.199.81.0/24
91.209.253.0/24
92.53.188.0/22
93.114.64.0/23
93.115.102.0/24
94.140.0.0/24
94.247.142.0/24
102.177.189.0/24
103.11.212.0/24
103.11.214.0/24
103.15.85.0/24
103.19.144.0/23
103.112.176.0/24
103.116.7.0/24
103.121.59.0/24
103.133.1.0/24
103.169.142.0/24
103.172.110.0/23
104.36.195.0/24
104.129.164.0/22
104.234.239.0/24
104.239.72.0/24
104.254.140.0/24
108.165.152.0/24
108.165.216.0/24
114.129.43.0/24
130.108.73.0/24
130.108.104.0/23
130.108.121.0/24
136.143.138.0/24
138.5.248.0/24
139.64.234.0/23
141.11.202.0/23
141.193.213.0/24
147.78.140.0/24
147.185.161.0/24
154.51.129.0/24
154.51.160.0/24
154.62.129.0/24
154.83.2.0/24
154.83.22.0/24
154.84.14.0/23
154.84.16.0/23
154.84.19.0/24
154.84.22.0/23
154.84.24.0/24
154.84.27.0/24
154.92.9.0/24
154.194.12.0/24
154.197.64.0/23
154.197.75.0/24
154.198.173.0/24
154.202.89.0/24
154.206.12.0/24
154.211.8.0/24
154.218.15.0/24
155.46.167.0/24
155.46.213.0/24
156.243.246.0/24
156.252.2.0/23
159.112.235.0/24
159.246.55.0/24
160.153.0.0/24
162.44.32.0/22
162.44.118.0/23
162.44.208.0/23
162.120.94.0/24
164.38.155.0/24
167.1.148.0/23
167.1.150.0/24
167.1.181.0/24
167.68.4.0/23
167.68.11.0/24
167.68.42.0/24
170.114.45.0/24
170.114.46.0/24
170.114.52.0/24
170.114.78.0/24
170.176.152.0/24
172.83.72.0/23
172.83.76.0/24
176.126.206.0/23
178.211.142.0/24
178.213.76.0/24
181.214.1.0/24
185.7.190.0/23
185.18.250.0/24
185.38.135.0/24
185.135.9.0/24
185.148.104.0/22
185.159.247.0/24
185.162.228.0/22
185.176.26.0/24
185.193.28.0/22
185.207.92.0/24
185.209.154.0/24
185.238.228.0/24
188.42.88.0/23
188.42.145.0/24
188.164.248.0/24
188.244.122.0/24
192.65.217.0/24
192.133.11.0/24
192.152.138.0/24
192.236.26.0/24
193.9.49.0/24
193.16.63.0/24
193.17.206.0/24
193.22.229.0/24
193.162.35.0/24
193.227.99.0/24
194.1.194.0/24
194.26.68.0/24
194.36.49.0/24
194.36.55.0/24
194.39.112.0/21
194.113.223.0/24
194.152.44.0/24
194.169.194.0/24
195.26.229.0/24
195.28.190.0/23
195.85.23.0/24
195.85.59.0/24
195.189.177.0/24
195.250.46.0/24
196.13.241.0/24
196.207.45.0/24
198.177.56.0/23
198.202.211.0/24
199.5.242.0/24
199.33.230.0/23
199.33.232.0/23
199.60.103.0/24
199.181.197.0/24
200.73.67.0/24
202.82.250.0/24
203.6.66.0/24
203.6.74.0/24
203.13.32.0/24
203.17.126.0/24
203.19.222.0/24
203.22.223.0/24
203.22.241.0/24
203.23.103.0/24
203.23.104.0/24
203.23.106.0/24
203.24.102.0/23
203.24.108.0/23
203.28.8.0/23
203.29.52.0/22
203.30.188.0/22
203.32.120.0/23
203.34.28.0/24
203.34.80.0/24
203.55.107.0/24
203.89.5.0/24
204.62.141.0/24
205.233.181.0/24
207.189.149.0/24
208.42.188.0/24
208.77.33.0/24
208.77.35.0/24
208.100.60.0/24
209.46.30.0/24
209.222.114.0/23
212.239.86.0/24
213.241.198.0/24
216.120.131.0/24
216.120.180.0/23
216.154.208.0/20
216.198.53.0/24
216.198.54.0/24
216.205.52.0/24
223.27.176.0/23

IPv6 prefixes

All 21 prefixes.

2001:503:ff40::/46
2400:c760:a::/48
2407:30c0:180::/46
2602:80c:cf::/48
2602:f830::/48
2606:2c0:20::/47
2606:2c40::/48
2606:ae80:10::/48
2620:78:200f::/48
2620:117:bfb0::/44
2620:132:1000::/48
2a03:f940::/48
2a05:7880::/32
2a06:9ac0::/32
2a07:180::/32
2a08:600::/48
2a08:600:e0::/47
2a08:600:ee::/47
2a08:600:ff::/48
2a14:71c0::/32
2a14:7ac0::/48

Similar-sized networks in United States

ASNNameIPv4 addresses

AS17052#637 TARGET - Target Corporation98,304

AS398025#638 CUMBERLAND-CONNECT - Cumberland Connect98,304

AS6026#639 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)97,536

AS397423#641 TIER-NET - Tier.Net Technologies LLC96,768

AS33182#642 DIMENOC - HostDime.com, Inc.96,768

AS300#643 DNIC-AS-00300 - United States Department of Defense (DoD)96,512

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources