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.

266,240 IP addresses
ASN3300
NameBT
OrganizationBritish Telecommunications PLC
CountryUnited Kingdom  
RegistryRIPE NCC
IPv4 addresses266,240
IPv6 /64 networks1.55 x 233
Prefixes116
Other ASN allocated to British Telecommunications PLC
ASN Name IP addresses
2856 BT-UK-AS 16,438,784
6871 Plusnet 2,138,880
5400 BT 700,416
13205 UNSPECIFIED 22,016
49182 BTEngageIT 4,352
204047 BT-PSN-DNSP-AS 0
57688 BT-PSN-AS 0
25127 BTOW 0
25041 AWS-DX 0
15697 BT-BS 0
2855 BTRADIANZPARIS 0
12641 BT_MPLS 0
8472 BT-GERMANY-NGN 0
6685 BTRADIANZFRANKFURT 0
212556 BT-ESC 0
IPv4 Prefixes for AS3300 - showing the first 20 of 85 networks
Network Location Addresses
136.238.168.0/24 HP Inc   Ashburn 256
136.238.185.0/24 HP Inc   Chiyoda 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   Ashburn 256
136.238.238.0/24 HP Inc   Chicago 256
136.238.239.0/24 HP Inc   New York 256
136.238.240.0/24 HP Inc   Ashburn 256
136.238.241.0/24 HP Inc   Ashburn 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
192.237.125.0/24 British Telecommunications PLC   El Segundo 256
195.206.69.0/24 British Telecommunications PLC   Amsterdam (Amsterdam-Zuidoost) 256
195.206.70.0/24 British Telecommunications PLC   Amsterdam (Amsterdam-Zuidoost) 256
198.137.75.0/24 British Telecommunications PLC   El Segundo 256
203.187.128.0/19 British Telecommunications PLC   Singapore (Hougang) 8,192
203.187.128.0/22 British Telecommunications PLC   Singapore (Hougang) 1,024
203.187.145.0/24 British Telecommunications PLC   Hong Kong 256
203.187.146.0/24 British Telecommunications PLC   Haymarket 256
IPv6 Prefixes for AS3300 - showing the first 20 of 31 networks
Network Location /64 Prefixes
2402:fb00:1000::/36 British Telecommunications PLC   Palo Alto 228
2402:fb00:1f00::/40 British Telecommunications PLC   Singapore (Hougang) 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   New York 228
2606:f100:2f00::/40 British Telecommunications PLC   Sterling 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   London 228