General Info

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:         BS1474-RIPE
tech-c:          BS1474-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

role:            BTnet Support
address:         Adhara
address:         Adastral Park
address:         Martlesham Heath
address:         Ipswich
address:         SUFFLK IP5 3RE
address:         GB
phone:           +44 800 0858963 5
phone:           +44 1473 336231
e-mail:          as2856peering@bt.com
e-mail:          btnetdns@bt.net
admin-c:         FLS15-RIPE
tech-c:          BS1474-RIPE
nic-hdl:         BS1474-RIPE
remarks:         For all queries contact as2856peering@bt.com
remarks:         Please send delisting issues to btnetdns@bt.net
mnt-by:          BTNET-MNT
created:         2002-04-30T07:54:10Z
last-modified:   2009-11-19T15:52:52Z
source:          RIPE

route:           81.128.0.0/12
descr:           BT Public Internet Service
origin:          AS2856
mnt-by:          BTNET-INFRA-MNT
notify:          ip.address.admin@bt.com
created:         2005-06-16T14:11:53Z
last-modified:   2014-07-31T07:47:16Z
source:          RIPE

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 2,944 domain names hosted across 1,498 IP addresses within this IP range. To access full domain hosting information with our API contact us for more details.

IP Address Domain Domains on this IP
81.143.245.179 bayswaterassetmanagement.com 159
81.142.228.211 bagsandbunting.com 109
81.133.160.2 nemaslugdirect.com 40
81.133.86.11 cheapconveyancer.com 38
81.139.38.152 crodawatertreatment.com 24
81.128.160.136 silversusie.com 24
81.128.180.81 handbook.aero 21
81.128.160.140 hudhudtravels.com 20
81.128.140.135 francelaptoprepair.com 20
81.133.113.102 hidecalc.co.uk 20
81.128.160.145 arganwoodland.org 19
81.133.228.187 agileprinceopoly.com 16
81.143.9.98 webdesignerderby.com 14
81.138.252.209 morganmultimediagroup.com 14
81.138.35.90 itshost.com 13
81.130.144.232 warrington.com 13
81.137.38.116 sentatalk.net 12
81.143.203.28 aesx.com 12
81.143.131.132 dennisupton.com 11
81.130.176.217 aquaticus.school 11

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.