AS3300

British Telecommunications PLC

AS 3300 BT

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

598,568 IP addresses
ASN3300
NameBT
OrganizationBritish Telecommunications PLC
CountryUnited Kingdom  
RegistryRIPE NCC
IPv4 addresses598,568
IPv6 /64 networks1.49 x 233
Prefixes141
Other ASN allocated to British Telecommunications PLC
ASN Name IP addresses
2856 BT-UK-AS 17,022,976
6871 Plusnet 2,098,176
5400 BT 702,464
13205 UNSPECIFIED 21,504
49182 BTEngageIT 3,328
204047 BT-PSN-DNSP-AS 0
57688 BT-PSN-AS 0
25127 BTOW 0
25041 AWS-DX 0
15697 BT-BS 0
2855 UKFABRIC 0
12641 BT_MPLS 0
8472 BT-GERMANY-NGN 0
6685 BTUKINTERNAL 0
212556 BT-ESC 0
IPv4 Prefixes for AS3300 - showing the first 20 of 112 networks
Network Location Addresses
136.238.168.0/24 HP Inc   Ashburn 256
136.238.185.0/24 HP Inc   Chiyoda City 256
136.238.187.0/24 HP Inc   Hong Kong 256
136.238.229.0/24 HP Inc   São Paulo 256
136.238.232.0/24 HP Inc   New York 256
136.238.238.0/24 HP Inc   Chicago 256
136.238.239.0/24 HP Inc   Chicago 256
136.238.240.0/24 HP Inc   Ashburn 256
136.238.241.0/24 HP Inc   Miami 256
136.238.243.0/24 HP Inc   São Paulo 256
185.249.5.0/24 Lumileds   San Jose (North San Jose) 256
185.249.6.0/24 Lumileds   Singapore 256
192.157.130.0/23 British Telecommunications PLC   El Segundo 512
192.157.132.0/22 INFONET Services Corporation   New York 1,024
192.157.136.0/21 INFONET Services Corporation   New York 2,048
192.157.144.0/20 INFONET Services Corporation   Ottawa (Nepean) 4,096
192.157.160.0/23 British Telecommunications PLC   El Segundo 512
192.237.64.0/18 British Telecommunications PLC   El Segundo 16,384
192.92.18.0/24 INFONET Services Corporation   New York 256
192.92.19.0/24 INFONET Services Corporation   Singapore (Hougang) 256
IPv6 Prefixes for AS3300 - showing the first 20 of 29 networks
Network Location /64 Prefixes
2402:fb00:1000::/36 British Telecommunications PLC   Irving 228
2402:fb00:1f00::/40 British Telecommunications PLC   Singapore (MacPherson) 224
2402:fb00:2000::/36 British Telecommunications PLC   Irving 228
2402:fb00:2f00::/40 British Telecommunications PLC   Irving 224
2402:fb00:3000::/36 British Telecommunications PLC   Irving 228
2402:fb00:3f00::/40 British Telecommunications PLC   Irving 224
2402:fb00::/32 British Telecommunications PLC   Palo Alto 232
2402:fb00::/36 British Telecommunications PLC   Palo Alto 228
2402:fb00:f00::/40 British Telecommunications PLC   Palo Alto 224
2606:f100:1000::/36 British Telecommunications PLC   Atlanta (Paces) 228
2606:f100:1f00::/40 British Telecommunications PLC   Atlanta (Paces) 224
2606:f100:2000::/36 British Telecommunications PLC   Atlanta (Paces) 228
2606:f100:2f00::/40 British Telecommunications PLC   Atlanta (Paces) 224
2606:f100:3000::/36 British Telecommunications PLC   Atlanta (Paces) 228
2606:f100:3f00::/40 British Telecommunications PLC   Atlanta (Paces) 224
2606:f100:4000::/36 British Telecommunications PLC   Atlanta (Paces) 228
2606:f100:4f00::/40 British Telecommunications PLC   Atlanta (Paces) 224
2606:f100:5000::/36 British Telecommunications PLC   Atlanta (Paces) 228
2606:f100:5f00::/40 British Telecommunications PLC   Atlanta (Paces) 224
2606:f100:6000::/36 British Telecommunications PLC   Cape Town 228