British Telecommunications PLC operates AS3300: 50 IPv4 prefixes covering 513,024 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #551 worldwide and #149 of 18,202 networks in United States. That is 0.04% of the country’s IPv4 space.
The network spreads across six or more countries: United States 63%, Canada 22%, Singapore 5.1%.
The largest block is 209.28.0.0 to 209.28.255.255 with 65,536 addresses, geolocated to El Segundo.
- IPv4 addresses
- 513,024
- IPv4 prefixes
- 50
- World rank
- #551
- Country share
- 0.04%
- IPv6 ranges
- 6
Addresses by country
Largest blocks
- 209.28.0.0 El Segundo65,536
- 207.209.0.0 Toronto65,536
- 207.117.0.0 Osaka65,536
- 206.182.0.0 Toronto65,536
- 205.248.0.0 Singapore (Orchard)65,536
- 204.231.0.0 Boston (Downtown)28,672
- 204.231.113.0 London20,224
- 204.140.64.0 Naperville (Naperville Park District)16,384
Networks of similar size
515,584
514,040
512,768
511,232IPv4 prefixes
- 61.14.0.0/18
- 63.250.128.0/18
- 72.29.128.0/20
- 136.238.168.0/24
- 136.238.185.0/24
- 136.238.187.0/24
- 136.238.229.0/24
- 136.238.232.0/24
- 136.238.238.0/23
- 136.238.240.0/23
- 136.238.243.0/24
- 185.249.5.0/24
- 185.249.6.0/24
- 192.92.18.0/23
- 192.92.20.0/22
- 192.92.24.0/21
- 192.92.32.0/19
- 192.92.80.0/23
- 192.92.82.0/24
- 192.157.130.0/23
- 192.157.132.0/22
- 192.157.136.0/21
- 192.157.144.0/20
- 192.157.160.0/23
- 192.237.64.0/18
- 194.33.52.0/24
- 195.206.69.0/24
- 195.206.70.0/24
- 198.137.75.0/24
- 198.178.237.0/24
- 198.178.239.0/24
- 198.207.64.0/18
- 199.6.64.0/18
- 203.187.128.0/19
- 204.52.187.0/24
- 204.79.84.0/24
- 204.140.64.0/18
- 204.231.0.0/18
- 204.231.64.0/19
- 204.231.96.0/20
- 204.231.113.0/24
- 204.231.114.0/23
- 204.231.116.0/22
- 204.231.120.0/21
- 204.231.128.0/18
- 205.248.0.0/16
- 206.182.0.0/16
- 207.117.0.0/16
- 207.209.0.0/16
- 209.28.0.0/16
Questions and answers
Who owns AS3300?
Autonomous system AS3300 is operated by British Telecommunications PLC.
How many IP addresses does AS3300 have?
The network holds 513,024 IPv4 addresses in 50 prefixes, plus 6 IPv6 ranges.
Which country is AS3300 in?
The main country is United States, with addresses in 5 more countries.
How big is AS3300?
By IPv4 addresses it ranks #551 worldwide.
What is the largest address block of AS3300?
209.28.0.0 to 209.28.255.255, 65,536 addresses.