asn.dev

Address space

AS2856 BT-UK-AS BTnet UK Regional network

IPv4 prefixes 506 13.81M addresses
IPv6 prefixes 5
Most common size /24 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/10
/10: 1
1
/11
/11: 1
1
/12
/12: 1
1
/13
/13: 3
3
/14
/14: 5
5
/15
/15: 10
10
/16
/16: 18
18
/17
/17: 8
8
/18
/18: 15
15
/19
/19: 28
28
/20
/20: 29
29
/21
/21: 32
32
/22
/22: 89
89
/23
/23: 60
60
/24
/24: 206
206

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
/25
/25: 1
1
/29
/29: 1
1
/47
/47: 1
1
/48
/48: 2
2

Geography

Where the space lands

CountryNamePrefixes
GBUnited Kingdom511

Inventory

All prefixes

showing 400 of 511
PrefixFamilyAddressesCountryFlags
5.35.192.0/21IPv42,048GB
5.80.0.0/15IPv4131,072GB
5.181.136.0/24IPv4256GB
9.151.0.0/19IPv48,192GB
9.151.208.0/20IPv44,096GB
9.151.248.0/21IPv42,048GB
9.232.192.0/18IPv416,384GB
9.233.48.0/20IPv44,096GB
9.237.96.0/19IPv48,192GB
9.237.128.0/18IPv416,384GB
9.237.192.0/19IPv48,192GB
15.145.20.0/22IPv41,024GB
23.26.70.0/24IPv4256GB
23.26.108.0/24IPv4256GB
23.26.117.0/24IPv4256GB
23.26.131.0/24IPv4256GB
23.26.192.0/24IPv4256GB
23.27.32.0/21IPv42,048GB
23.27.40.0/24IPv4256GB
23.27.102.0/23IPv4512GB
23.27.104.0/22IPv41,024GB
23.27.108.0/24IPv4256GB
23.230.82.0/23IPv4512GB
23.230.242.0/24IPv4256GB
23.230.252.0/24IPv4256GB
31.48.0.0/13IPv4524,288GB
31.90.0.0/15IPv4131,072GB
31.92.0.0/15IPv4131,072GB
31.94.0.0/16IPv465,536GB
31.96.0.0/16IPv465,536GB
31.100.0.0/14IPv4262,144GB
31.104.0.0/16IPv465,536GB
31.106.0.0/15IPv4131,072GB
31.112.0.0/13IPv4524,288GB
31.120.0.0/14IPv4262,144GB
31.124.0.0/16IPv465,536GB
31.126.0.0/15IPv4131,072GB
31.130.240.0/23IPv4512GB
37.44.229.0/24IPv4256GB
37.44.230.0/23IPv4512GB
37.97.112.0/22IPv41,024GB
37.143.3.0/24IPv4256GB
37.230.61.0/24IPv4256GB
40.27.28.0/24IPv4256GB
40.27.72.0/24IPv4256GB
45.39.116.0/24IPv4256GB
45.39.188.0/24IPv4256GB
45.149.7.0/24IPv4256GB
45.149.168.0/22IPv41,024GB
46.68.0.0/18IPv416,384GB
46.68.64.0/23IPv4512GB
46.68.66.0/24IPv4256GB
46.68.67.0/24IPv4256GB
46.68.68.0/22IPv41,024GB
46.68.72.0/21IPv42,048GB
46.68.80.0/20IPv44,096GB
46.68.96.0/19IPv48,192GB
46.68.128.0/17IPv432,768GB
46.69.0.0/16IPv465,536GB
46.248.96.0/22IPv41,024GB
46.248.102.0/23IPv4512GB
46.248.104.0/23IPv4512GB
46.248.120.0/22IPv41,024GB
50.117.7.0/24IPv4256GB
50.117.51.0/24IPv4256GB
50.118.154.0/23IPv4512GB
51.14.0.0/16IPv465,536GB
51.64.32.0/24IPv4256GB
51.146.44.0/22IPv41,024GB
51.146.128.0/22IPv41,024GB
51.146.136.0/22IPv41,024GB
51.146.235.0/24IPv4256GB
51.146.252.0/22IPv41,024GB
51.149.18.0/23IPv4512GB
51.194.36.0/23IPv4512GB
51.194.100.0/22IPv41,024GB
51.230.0.0/17IPv432,768GB
51.230.255.0/24IPv4256GB
51.241.3.0/24IPv4256GB
51.241.201.0/24IPv4256GB
62.6.0.0/15IPv4131,072GB
62.172.8.0/21IPv42,048GB
62.172.16.0/20IPv44,096GB
62.172.32.0/19IPv48,192GB
62.172.64.0/18IPv416,384GB
62.172.128.0/19IPv48,192GB
62.172.160.0/21IPv42,048GB
62.172.168.0/22IPv41,024GB
62.172.172.0/24IPv4256GB
62.172.174.0/23IPv4512GB
62.172.176.0/20IPv44,096GB
62.172.192.0/18IPv416,384GB
62.192.124.0/23IPv4512GB
62.239.0.0/16IPv465,536GB
62.244.11.0/24IPv4256GB
62.244.12.0/24IPv4256GB
62.244.29.0/24IPv4256GB
62.244.36.0/23IPv4512GB
62.244.41.0/24IPv4256GB
62.244.43.0/24IPv4256GB
62.244.45.0/24IPv4256GB
62.244.56.0/24IPv4256GB
64.205.136.0/22IPv41,024GB
64.205.144.0/22IPv41,024GB
72.9.180.0/22IPv41,024GB
77.90.135.0/24IPv4256GB
77.90.138.0/24IPv4256GB
77.90.145.0/24IPv4256GB
77.90.151.0/24IPv4256GB
77.90.153.0/24IPv4256GB
77.90.164.0/24IPv4256GB
77.90.184.0/24IPv4256GB
77.94.224.0/24IPv4256GB
78.105.97.0/24IPv4256GB
78.105.136.0/22IPv41,024GB
79.132.64.0/23IPv4512GB
79.139.52.0/22IPv41,024GB
80.81.58.0/24IPv4256GB
81.128.0.0/11IPv42,097,152GB
81.161.52.0/22IPv41,024GB
82.38.9.0/24IPv4256GB
82.38.56.0/22IPv41,024GB
82.39.173.0/24IPv4256GB
82.41.112.0/22IPv41,024GB
82.108.4.0/22IPv41,024GB
82.108.32.0/21IPv42,048GB
82.108.44.0/22IPv41,024GB
82.108.52.0/22IPv41,024GB
82.108.68.0/22IPv41,024GB
82.108.88.0/23IPv4512GB
82.108.92.0/22IPv41,024GB
82.108.102.0/23IPv4512GB
82.108.116.0/22IPv41,024GB
82.108.140.0/22IPv41,024GB
82.108.152.0/23IPv4512GB
82.136.54.0/23IPv4512GB
82.140.134.0/24IPv4256GB
82.140.138.0/24IPv4256GB
82.140.143.0/24IPv4256GB
82.140.170.0/24IPv4256GB
82.153.33.0/24IPv4256GB
82.153.85.0/24IPv4256GB
82.153.88.0/24IPv4256GB
82.153.179.0/24IPv4256GB
82.153.181.0/24IPv4256GB
82.153.190.0/24IPv4256GB
82.153.238.0/24IPv4256GB
83.223.153.0/24IPv4256GB
83.223.154.0/24IPv4256GB
83.245.16.0/21IPv42,048GB
83.245.24.0/22IPv41,024GB
84.23.0.0/19IPv48,192GB
84.46.177.0/24IPv4256GB
84.46.181.0/24IPv4256GB
84.46.183.0/24IPv4256GB
84.46.188.0/24IPv4256GB
84.46.190.0/23IPv4512GB
84.46.194.0/24IPv4256GB
84.55.17.0/24IPv4256GB
84.55.22.0/24IPv4256GB
85.88.224.0/22IPv41,024GB
85.88.232.0/23IPv4512GB
85.88.240.0/23IPv4512GB
85.204.160.0/22IPv41,024GB
85.235.123.0/24IPv4256GB
86.38.56.0/24IPv4256GB
86.38.63.0/24IPv4256GB
86.38.65.0/24IPv4256GB
86.38.67.0/24IPv4256GB
86.38.68.0/24IPv4256GB
86.38.86.0/24IPv4256GB
86.38.93.0/24IPv4256GB
86.38.118.0/24IPv4256GB
86.38.123.0/24IPv4256GB
86.38.148.0/24IPv4256GB
86.38.193.0/24IPv4256GB
86.38.233.0/24IPv4256GB
86.38.244.0/24IPv4256GB
86.54.81.0/24IPv4256GB
86.110.57.0/24IPv4256GB
86.128.0.0/10IPv44,194,304GB
87.76.183.0/24IPv4256GB
87.86.24.0/23IPv4512GB
87.232.114.0/24IPv4256GB
87.237.16.0/21IPv42,048GB
89.39.172.0/23IPv4512GB
89.117.183.0/24IPv4256GB
89.117.198.0/24IPv4256GB
89.117.203.0/24IPv4256GB
89.117.235.0/24IPv4256GB
89.145.172.0/23IPv4512GB
91.90.125.0/24IPv4256GB
91.90.127.0/24IPv4256GB
91.102.189.0/24IPv4256GB
91.102.190.0/23IPv4512GB
91.111.0.0/16IPv465,536GB
91.142.128.0/24IPv4256GB
91.227.78.0/24IPv4256GB
91.230.16.0/24IPv4256GB
91.230.40.0/24IPv4256GB
91.236.216.0/23IPv4512GB
94.26.64.0/23IPv4512GB
94.72.248.0/21IPv42,048GB
94.125.16.0/22IPv41,024GB
94.232.100.0/22IPv41,024GB
95.144.0.0/13IPv4524,288GB
95.173.59.0/24IPv4256GB
109.144.0.0/12IPv41,048,576GB
109.180.0.0/15IPv4131,072GB
109.205.158.0/24IPv4256GB
109.249.0.0/16IPv465,536GB
132.146.0.0/16IPv465,536GB
132.153.3.0/24IPv4256GB
132.153.244.0/22IPv41,024GB
132.153.248.0/22IPv41,024GB
132.153.252.0/23IPv4512GB
132.153.254.0/24IPv4256GB
132.244.79.0/24IPv4256GB
138.108.94.0/24IPv4256GB
142.205.162.0/23IPv4512GB
143.223.132.0/24IPv4256GB
144.87.0.0/21IPv42,048GB
144.87.16.0/20IPv44,096GB
144.87.128.0/18IPv416,384GB
144.177.74.0/23IPv4512GB
145.79.172.0/22IPv41,024GB
147.78.68.0/22IPv41,024GB
147.90.32.0/24IPv4256GB
147.90.36.0/24IPv4256GB
147.90.55.0/24IPv4256GB
147.90.115.0/24IPv4256GB
147.90.127.0/24IPv4256GB
147.148.0.0/14IPv4262,144GB
147.152.0.0/16IPv465,536GB
147.189.68.0/22IPv41,024GB
147.189.76.0/22IPv41,024GB
148.252.3.0/24IPv4256GB
148.252.7.0/24IPv4256GB
148.253.220.0/23IPv4512GB
149.117.130.0/24IPv4256GB
149.254.0.0/23IPv4512GB
149.254.2.0/23IPv4512GB
149.254.4.0/22IPv41,024GB
149.254.8.0/21IPv42,048GB
149.254.16.0/20IPv44,096GB
149.254.32.0/19IPv48,192GB
149.254.64.0/18IPv416,384GB
149.254.128.0/17IPv432,768GB
151.240.180.0/22IPv41,024GB
151.240.184.0/21IPv42,048GB
151.240.192.0/21IPv42,048GB
151.240.200.0/22IPv41,024GB
151.241.52.0/22IPv41,024GB
151.241.56.0/21IPv42,048GB
151.241.180.0/22IPv41,024GB
151.241.184.0/21IPv42,048GB
151.241.192.0/21IPv42,048GB
151.241.200.0/22IPv41,024GB
151.242.24.0/24IPv4256GB
151.242.42.0/24IPv4256GB
151.243.254.0/24IPv4256GB
151.244.80.0/22IPv41,024GB
151.244.204.0/22IPv41,024GB
151.244.208.0/22IPv41,024GB
151.245.80.0/22IPv41,024GB
151.245.204.0/22IPv41,024GB
151.245.208.0/22IPv41,024GB
151.246.145.0/24IPv4256GB
151.246.239.0/24IPv4256GB
151.247.220.0/24IPv4256GB
151.247.231.0/24IPv4256GB
151.247.245.0/24IPv4256GB
152.114.196.0/24IPv4256GB
152.114.220.0/22IPv41,024GB
156.146.3.0/24IPv4256GB
157.236.254.0/23IPv4512GB
159.180.96.0/19IPv48,192GB
159.197.13.0/24IPv4256GB
159.197.44.0/23IPv4512GB
159.253.66.0/23IPv4512GB
161.104.0.0/21IPv42,048GB
163.5.37.0/24IPv4256GB
163.5.67.0/24IPv4256GB
163.5.98.0/24IPv4256GB
163.5.115.0/24IPv4256GB
163.5.122.0/24IPv4256GB
163.5.208.0/24IPv4256GB
163.5.217.0/24IPv4256GB
163.5.222.0/24IPv4256GB
163.5.249.0/24IPv4256GB
164.38.2.0/24IPv4256GB
164.38.12.0/24IPv4256GB
164.38.16.0/22IPv41,024GB
164.38.31.0/24IPv4256GB
164.38.32.0/23IPv4512GB
164.38.34.0/24IPv4256GB
164.38.120.0/22IPv41,024GB
164.38.134.0/24IPv4256GB
164.38.148.0/23IPv4512GB
164.38.156.0/24IPv4256GB
164.38.184.0/22IPv41,024GB
164.38.196.0/23IPv4512GB
164.134.1.0/24IPv4256GB
164.134.134.0/23IPv4512GB
164.134.136.0/23IPv4512GB
164.134.138.0/24IPv4256GB
165.120.0.0/16IPv465,536GB
166.88.17.0/24IPv4256GB
166.88.18.0/24IPv4256GB
166.88.32.0/24IPv4256GB
166.88.200.0/24IPv4256GB
167.148.60.0/22IPv41,024GB
178.78.106.0/23IPv4512GB
178.78.108.0/22IPv41,024GB
178.78.112.0/20IPv44,096GB
178.92.112.0/22IPv41,024GB
178.92.180.0/22IPv41,024GB
178.93.104.0/22IPv41,024GB
178.94.244.0/22IPv41,024GB
178.95.60.0/22IPv41,024GB
178.212.56.0/23IPv4512GB
185.58.165.0/24IPv4256GB
185.68.200.0/22IPv41,024GB
185.90.32.0/22IPv41,024GB
185.128.205.0/24IPv4256GB
185.149.6.0/24IPv4256GB
185.177.64.0/23IPv4512GB
185.230.13.0/24IPv4256GB
185.230.15.0/24IPv4256GB
188.172.160.0/20IPv44,096GB
192.8.112.0/24IPv4256GB
192.8.149.0/24IPv4256GB
192.12.73.0/24IPv4256GB
192.53.46.0/24IPv4256GB
192.65.219.0/24IPv4256GB
192.65.221.0/24IPv4256GB
192.65.222.0/23IPv4512GB
192.65.224.0/22IPv41,024GB
192.65.228.0/24IPv4256GB
192.152.14.0/24IPv4256GB
192.177.94.0/23IPv4512GB
193.23.32.0/24IPv4256GB
193.32.46.0/24IPv4256GB
193.32.48.0/24IPv4256GB
193.33.199.0/24IPv4256GB
193.35.128.0/20IPv44,096GB
193.35.158.0/23IPv4512GB
193.35.160.0/23IPv4512GB
193.35.197.0/24IPv4256GB
193.35.220.0/22IPv41,024GB
193.36.78.0/23IPv4512GB
193.36.80.0/24IPv4256GB
193.36.81.0/24IPv4256GB
193.36.82.0/23IPv4512GB
193.36.240.0/24IPv4256GB
193.36.243.0/24IPv4256GB
193.36.253.0/24IPv4256GB
193.37.142.0/24IPv4256GB
193.37.160.0/20IPv44,096GB
193.38.192.0/22IPv41,024GB
193.38.196.0/22IPv41,024GB
193.38.201.0/24IPv4256GB
193.38.202.0/23IPv4512GB
193.38.204.0/22IPv41,024GB
193.38.208.0/20IPv44,096GB
193.39.141.0/24IPv4256GB
193.84.142.0/24IPv4256GB
193.111.18.0/23IPv4512GB
193.113.0.0/16IPv465,536GB
193.138.107.0/24IPv4256GB
193.187.140.0/22IPv41,024GB
193.195.138.0/24IPv4256GB
194.32.20.0/22IPv41,024GB
194.32.29.0/24IPv4256GB
194.32.31.0/24IPv4256GB
194.32.207.0/24IPv4256GB
194.35.183.0/24IPv4256GB
194.36.68.0/24IPv4256GB
194.36.135.0/24IPv4256GB
194.59.188.0/24IPv4256GB
194.60.136.0/22IPv41,024GB
194.70.94.0/24IPv4256GB
194.72.0.0/15IPv4131,072GB
194.74.0.0/18IPv416,384GB
194.74.64.0/20IPv44,096GB
194.74.88.0/21IPv42,048GB
194.74.96.0/19IPv48,192GB
194.74.128.0/17IPv432,768GB
194.75.32.0/19IPv48,192GB
194.75.64.0/20IPv44,096GB
194.75.96.0/19IPv48,192GB
194.75.128.0/18IPv416,384GB
194.75.192.0/20IPv44,096GB
194.75.208.0/21IPv42,048GB
194.75.216.0/22IPv41,024GB
194.75.224.0/19IPv48,192GB
194.102.0.0/19IPv48,192GB
194.132.24.0/23IPv4512GB
194.155.58.0/24IPv4256GB
194.169.32.0/21IPv42,048GB

Capped at 400 rows to keep the page a sane size. The filter searches only what is rendered.