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.

16,779,520 IP addresses
ASN2856
NameBT-UK-AS
OrganizationBritish Telecommunications PLC
CountryUnited Kingdom  
RegistryRIPE NCC
IPv4 addresses16,779,520
IPv6 /64 networks239
Prefixes317
Other ASN allocated to British Telecommunications PLC
ASN Name IP addresses
6871 Plusnet 1,942,272
5400 BT 778,240
3300 BT 260,352
13205 UNSPECIFIED 23,040
49182 BTEngageIT 5,120
15697 BT-BS 256
IPv4 Prefixes for AS2856 - showing the first 20 of 315 networks
Network Location Addresses
103.91.117.0/24 British Telecommunications PLC   London 256
109.144.0.0/12 British Telecommunications PLC   London (Colindale) 1,048,576
109.144.0.0/14 British Telecommunications PLC   London (Colindale) 262,144
109.205.158.0/24 British Telecommunications PLC   Folkestone 256
116.66.140.0/22 Cognizant Technology Solutions India Pvt Ltd   Aberdeen 1,024
132.146.0.0/16 British Telecommunications PLC   York 65,536
132.153.244.0/24 British Telecommunications PLC   Southgate 256
132.153.245.0/24 British Telecommunications PLC   Southgate 256
132.153.246.0/24 British Telecommunications PLC   Southgate 256
132.153.247.0/24 British Telecommunications PLC   Southgate 256
132.153.248.0/24 British Telecommunications PLC   Southgate 256
132.153.249.0/24 British Telecommunications PLC   Southgate 256
132.153.250.0/24 British Telecommunications PLC   Southgate 256
132.153.251.0/24 British Telecommunications PLC   Southgate 256
132.153.252.0/24 British Telecommunications PLC   Southgate 256
132.153.253.0/24 British Telecommunications PLC   Southgate 256
132.153.254.0/24 British Telecommunications PLC   Southgate 256
132.153.3.0/24 Atomic Weapons Establishment   Aldermaston 256
138.108.94.0/24 British Telecommunications PLC   London (South Bank) 256
141.92.12.0/22 Akamai Technologies, Inc.   London 1,024
IPv6 Prefixes for AS2856
Network Location /64 Prefixes
2a00:2380::/25 British Telecommunications PLC   York 239
2a02:ee80:4176::/47 Accenture LLP   Amsterdam 217