British Telecommunications PLC

AS 2856 BT-UK-AS BTnet UK Regional network

British Telecommunications PLC

AS 2856 BT-UK-AS BTnet UK Regional network


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.

  15,454,464 IP addresses

  Network
ASN2856
NameBT-UK-AS BTnet UK Regional network
OrganizationBritish Telecommunications PLC
CountryUnited Kingdom  
RegistryRIPE NCC


  Details
IPv4 addresses15,454,464
IPv6 /64 networks239
Prefixes197


  Other ASN allocated to British Telecommunications PLC
ASN Name IP addresses
6871 PLUSNET UK Internet Service Provider 1,876,736
5400 BT 866,048
3300 BT 326,400
13205 BTWWIDC-H Autonomous System 17,920
15697 BT-BS 256


  Prefixes for AS2856
IPv4 addresses - showing the first 20 of 195 networks
Network Location Addresses
British Telecommunications PLC   London 256
British Telecommunications PLC   Edgware (Colindale) 1,048,576
British Telecommunications PLC   Barton under Needwood 256
Cognizant Technology Solutions India Pvt Ltd   Aberdeen 1,024
Btl   York 65,536
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
British Telecommunications PLC   Southgate 256
Atomic Weapons Establishment   Aldermaston 256
British Telecommunications PLC   London (Colindale) 256
Lloyds Banking Group PLC   London 1,024
Lloyds Banking Group PLC   London 1,024

IPv6 addresses
Network Location /64 Prefixes
Bt Uk   York 239
Accenture LLP   Amsterdam 217