asn.dev

Address space

AS15404 COLT Technology Services Group

IPv4 prefixes 126 142K addresses
IPv6 prefixes 10
Most common size /24 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/16
/16: 1
1
/19
/19: 1
1
/20
/20: 4
4
/21
/21: 5
5
/22
/22: 9
9
/23
/23: 22
22
/24
/24: 84
84

How this network carves its IPv4 space. A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.

Shape

Prefix sizes

IPv6
/32
/32: 1
1
/36
/36: 1
1
/48
/48: 8
8

Geography

Where the space lands

CountryNamePrefixes
GBUnited Kingdom136

Inventory

All prefixes

136 total
PrefixFamilyAddressesCountryFlags
5.11.96.0/20IPv44,096GB
45.129.69.0/24IPv4256GB
46.28.212.0/24IPv4256GB
51.64.34.0/23IPv4512GB
62.85.160.0/19IPv48,192GB
62.182.250.0/24IPv4256GB
77.74.158.0/23IPv4512GB
85.208.193.0/24IPv4256GB
91.209.87.0/24IPv4256GB
91.212.245.0/24IPv4256GB
91.213.65.0/24IPv4256GB
91.213.68.0/24IPv4256GB
91.213.91.0/24IPv4256GB
91.213.110.0/24IPv4256GB
91.238.4.0/24IPv4256GB
91.244.125.0/24IPv4256GB
103.80.220.0/23IPv4512GB
109.107.145.0/24IPv4256GB
129.35.17.0/24IPv4256GB
129.35.20.0/23IPv4512GB
129.35.85.0/24IPv4256GB
139.138.235.0/24IPv4256GB
141.98.45.0/24IPv4256GB
148.188.0.0/20IPv44,096GB
148.188.192.0/20IPv44,096GB
148.188.224.0/22IPv41,024GB
148.188.232.0/21IPv42,048GB
155.137.0.0/22IPv41,024GB
155.137.7.0/24IPv4256GB
156.118.0.0/24IPv4256GB
156.118.6.0/24IPv4256GB
156.118.8.0/24IPv4256GB
157.239.128.0/23IPv4512GB
158.156.155.0/24IPv4256GB
158.156.162.0/24IPv4256GB
158.156.172.0/24IPv4256GB
158.156.182.0/24IPv4256GB
158.156.193.0/24IPv4256GB
161.17.0.0/16IPv465,536GB
163.199.254.0/24IPv4256GB
170.200.251.0/24IPv4256GB
170.200.252.0/23IPv4512GB
170.248.142.0/24IPv4256GB
170.251.108.0/24IPv4256GB
170.252.84.0/23IPv4512GB
170.252.86.0/24IPv4256GB
176.119.201.0/24IPv4256GB
178.249.200.0/21IPv42,048GB
185.13.62.0/24IPv4256GB
185.60.76.0/23IPv4512GB
185.60.79.0/24IPv4256GB
185.134.140.0/24IPv4256GB
185.140.104.0/24IPv4256GB
185.154.148.0/23IPv4512GB
185.199.204.0/24IPv4256GB
185.203.232.0/24IPv4256GB
185.212.156.0/22IPv41,024GB
185.213.216.0/23IPv4512GB
185.218.120.0/22IPv41,024GB
185.226.224.0/24IPv4256GB
185.234.136.0/24IPv4256GB
188.64.17.0/24IPv4256GB
188.64.18.0/23IPv4512GB
192.31.22.0/24IPv4256GB
192.76.161.0/24IPv4256GB
192.109.222.0/24IPv4256GB
192.166.107.0/24IPv4256GB
192.228.1.0/24IPv4256GB
192.228.2.0/23IPv4512GB
192.232.64.0/24IPv4256GB
192.232.66.0/24IPv4256GB
193.8.64.0/22IPv41,024GB
193.26.246.0/23IPv4512GB
193.26.248.0/21IPv42,048GB
193.28.71.0/24IPv4256GB
193.29.146.0/23IPv4512GB
193.29.150.0/23IPv4512GB
193.29.152.0/22IPv41,024GB
193.29.156.0/23IPv4512GB
193.29.159.0/24IPv4256GB
193.38.200.0/24IPv4256GB
193.46.62.0/24IPv4256GB
193.47.140.0/24IPv4256GB
193.53.174.0/24IPv4256GB
193.53.185.0/24IPv4256GB
193.53.186.0/24IPv4256GB
193.53.188.0/24IPv4256GB
193.53.190.0/24IPv4256GB
193.56.33.0/24IPv4256GB
193.57.56.0/24IPv4256GB
193.58.6.0/24IPv4256GB
193.73.113.0/24IPv4256GB
193.102.79.0/24IPv4256GB
193.102.174.0/24IPv4256GB
193.103.129.0/24IPv4256GB
193.135.254.0/24IPv4256GB
193.164.14.0/24IPv4256GB
193.176.112.0/22IPv41,024GB
193.177.180.0/23IPv4512GB
193.200.191.0/24IPv4256GB
194.11.129.0/24IPv4256GB
194.15.16.0/24IPv4256GB
194.15.18.0/24IPv4256GB
194.15.242.0/23IPv4512GB
194.15.244.0/22IPv41,024GB
194.33.183.0/24IPv4256GB
194.39.220.0/24IPv4256GB
194.59.96.0/20IPv44,096GB
194.59.112.0/21IPv42,048GB
194.59.120.0/23IPv4512GB
194.59.122.0/23IPv4512GB
194.59.124.0/22IPv41,024GB
194.59.137.0/24IPv4256GB
194.59.139.0/24IPv4256GB
194.76.8.0/23IPv4512GB
194.99.12.0/24IPv4256GB
194.99.120.0/21IPv42,048GB
194.117.239.0/24IPv4256GB
194.126.242.0/24IPv4256GB
194.173.47.0/24IPv4256GB
195.47.207.0/24IPv4256GB
195.182.60.0/24IPv4256GB
195.234.175.0/24IPv4256GB
202.246.252.0/24IPv4256GB
202.252.108.0/23IPv4512GB
213.163.237.0/24IPv4256GB
2001:678:274::/48IPv6—GB
2001:67c:67c::/48IPv6—GB
2001:67c:2b20::/48IPv6—GB
2001:67c:2ea0::/48IPv6—GB
2a02:11f8:70::/48IPv6—GB
2a07:cb81::/32IPv6—GB
2a0a:d6c0:145::/48IPv6—GB
2a0e:900:d001::/48IPv6—GB
2a10:8802::/36IPv6—GB
2a11:4d40::/48IPv6—GB