AS2856 British Telecommunications PLC: IP Ranges and Network Details

AS2856 is the autonomous system of British Telecommunications PLC. It holds 13,845,504 IPv4 addresses in 526 prefixes plus 5 IPv6 ranges, mainly in United Kingdom.

By IPv4 addresses the network ranks #29 worldwide and #1 of 1,931 networks in United Kingdom. That is 11% of the country’s IPv4 space.

The network spreads across six or more countries: United Kingdom 100%, United States 0.05%, Germany 0.02%.

The largest block is 86.128.0.0 to 86.191.255.255 with 4,194,304 addresses, geolocated to Brockley.

IPv4 addresses: 13,845,504
IPv4 prefixes: 526
World rank: #29
Country share: 11%
IPv6 ranges: 5

Addresses by country

Largest blocks

86.128.0.0 Brockley4,194,304
81.128.0.0 Newport2,097,152
109.144.0.0 London1,048,576
31.112.0.0 Dinnington851,968
95.144.0.0 Ardrishaig524,288
31.48.0.0 Guildford524,288
217.32.180.0 Martlesham (Martlesham Heath)416,768
217.39.128.0 London366,592

Networks of similar size

AS4538 China Education and Research Network Center16,287,744
AS15557 Societe Francaise Du Radiotelephone - SFR SA15,811,072
AS209 CenturyLink Communications, LLC15,665,064
AS9318 SK Broadband Co Ltd15,000,064
AS8151 Uninet S.A. de C.V.13,500,928
AS1221 Telstra Limited13,387,776
AS21928 T-Mobile USA, Inc.13,120,000
AS22773 Cox Communications Inc.12,847,872

IPv4 prefixes

and 226 more prefixes

Questions and answers

Who owns AS2856?

Autonomous system AS2856 is operated by British Telecommunications PLC.

How many IP addresses does AS2856 have?

The network holds 13,845,504 IPv4 addresses in 526 prefixes, plus 5 IPv6 ranges.

Which country is AS2856 in?

The main country is United Kingdom, with addresses in 5 more countries.

How big is AS2856?

By IPv4 addresses it ranks #29 worldwide.

What is the largest address block of AS2856?

86.128.0.0 to 86.191.255.255, 4,194,304 addresses.