AS2856

British Telecommunications PLC

AS 2856 BT-UK-AS

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.

20,081,664 IP addresses
ASN2856
NameBT-UK-AS
OrganizationBritish Telecommunications PLC
CountryUnited Kingdom  
RegistryRIPE NCC
IPv4 addresses20,081,664
IPv6 /64 networks239
Prefixes399
Other ASN allocated to British Telecommunications PLC
ASN Name IP addresses
6871 Plusnet 2,098,176
5400 BT 702,720
3300 BT 600,360
13205 UNSPECIFIED 20,992
6685 GRAPEVINE 4,096
204047 BT-PSN-DNSP-AS 0
57688 BT-PSN-AS 0
49182 BTEngageIT 0
25127 BTOW 0
25041 AWS-DX 0
15697 BT-BS 0
2855 Business-Fabric 0
12641 BT_MPLS 0
8472 BT-GERMANY-NGN 0
212556 BT-ESC 0
IPv4 Prefixes for AS2856 - showing the first 20 of 393 networks
Network Location Addresses
109.144.0.0/12 British Telecommunications PLC   London 1,048,576
109.180.0.0/15 EE Limited   Hatfield 131,072
109.205.158.0/24 British Telecommunications PLC   Folkestone 256
116.66.140.0/22 Cognizant Technology Solutions India Pvt Ltd   London 1,024
132.146.0.0/16 British Telecommunications PLC   York 65,536
132.153.244.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.245.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.246.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.247.0/24 British Telecommunications PLC   Aldermaston 256
132.153.248.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.249.0/24 British Telecommunications PLC   London 256
132.153.250.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.251.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.252.0/24 British Telecommunications PLC   London (South Bank) 256
132.153.253.0/24 British Telecommunications PLC   Aldermaston 256
132.153.254.0/24 British Telecommunications PLC   Tadley 256
132.153.3.0/24 Atomic Weapons Establishment   Aldermaston 256
138.108.94.0/24 British Telecommunications PLC   London 256
142.205.162.0/23 British Telecommunications PLC   London 512
143.223.132.0/24 British Telecommunications PLC   London 256
IPv6 Prefixes for AS2856
Network Location /64 Prefixes
2001:4878:c259::/48 British Telecommunications PLC   London (South Bank) 216
2a00:2380::/25 British Telecommunications PLC   York 239
2a01:4c8:f400::/48 EE Limited   Hatfield 216
2a01:4c8:f401::/48 British Telecommunications PLC   London 216
2a02:ee80:4176::/47 British Telecommunications PLC   London 217
2a03:1e82:90ff::/48 Bmw Uk   Guildford 216