81.128.0.0/12

AS2856 British Telecommunications PLC

81.128.0.0/12 - BT-INFRA

ID

BT-INFRA

Description

BT Infrastructure Layer

ASN

AS2856 British Telecommunications PLC

Country

United Kingdom

Registry

ripe

Whois Details

inetnum:        81.128.0.0 - 81.143.255.255
netname:        BT-INFRA
descr:          BT Infrastructure Layer
country:        GB
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         LIR-PARTITIONED PA
mnt-by:         BTNET-INFRA-MNT
mnt-lower:      BTNET-MNT
mnt-routes:     BTNET-MNT
created:        2014-08-01T07:43:40Z
last-modified:  2014-08-01T07:43:40Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Company Details

We have details for more than 49 companies that use IP addresses within this IP range, including cnet-training.com, belfastcityairport.com, marineharvest.com, blackmarble.co.uk, hc-one.co.uk. To find out more about our company details data contact sales.

Hosted Domain Names

There are 10,876 domain names hosted across 2,532 IP addresses on this ASN.

IP Address Domain Domains on this IP
81.131.51.252 glaziersedgware.co.uk 5,175
81.143.245.179 bayswatermobile.com 208
81.136.232.121 molymod.com 91
81.142.228.211 boostuk.org 67
81.143.9.98 a1airporttransferspershore.co.uk 63
81.133.160.2 asmadasadog.com 56
81.128.180.81 handbook.aero 51
81.131.51.251 able247glazier.co.uk 48
81.139.48.154 helpforconveyancers.co.uk 47
81.133.86.11 conveyancerlondon.com 45
81.131.51.241 assistanceservices.co.uk 39
81.128.160.140 longbourn1895.co.uk 37
81.128.140.135 imacrepairs.com 35
81.128.160.145 derbymaintenance.co.uk 34
81.128.160.188 hudsmail.co.uk 32
81.133.242.13 fuerteventura-properties.co.uk 32
81.128.160.136 millfieldfoundation.co.uk 32
81.143.199.147 eurotalk.com 30
81.131.51.238 glaziersburnley.co.uk 28
81.133.228.187 llandegla.com 28

IP address subranges within this IP range

Details

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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