Every .dk domain whose website address (A record) is announced by AS2856, with the network's IPv6 and DNSSEC adoption and its observed prefixes. An autonomous system is the routing identity of a hosting company or ISP. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.
Active .dk domains whose website address (A record) is announced by AS2856, counted once a day.
AS2856 is announced by British Telecommunications PLC (United Kingdom) and currently hosts 14 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 11 unique IPv4 addresses on this network, and the domains currently sit in 6 IPv4 CIDR blocks covering roughly 6.8 million addresses of IPv4 space.
We have yet to observe any IPv6 (AAAA) hosting on this AS.
The network is part of the .dk zone's infrastructure too: 11 distinct nameservers and 11 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.
On the security side, 5 of the domains hosted here (35.7%) validate as DNSSEC-secure — below the zone-wide average for domains with a web address, 70.5%. See how this AS compares on the ASN statistics page, or drill into the CIDR list below the results.
BT-UK-AS British Telecommunications Limited announces 550 prefixes (543 IPv4, 7 IPv6) and reaches the internet through 10 upstream networks.
Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.
| Network | Name | Domains | Power |
|---|---|---|---|
| AS212565 | Specsavers Optical Group Limited | — | |
| AS3738 | SSB-ASN-3738 - State Street Bank and Trust Company | — | |
| AS20705 | HSBC-UK HSBC Bank plc | — | |
| AS202466 | qbeeo QBE Management Services (UK) Limited | — | |
| AS25198 | ZetServers INTERKVM HOST SRL | — | |
| AS5089 | NTL Virgin Media Limited | — |
Among the networks we hold ipbot.dk routing data for (the ones looked up on this site), so this is a sample of the AS's customers, not all of them.
| CIDR | Domains |
|---|---|
| 213.120.0.0/14 | 4 |
| 86.128.0.0/10 | 4 |
| 81.128.0.0/11 | 3 |
| 194.74.128.0/17 | 1 |
| 195.171.128.0/17 | 1 |
| 62.6.0.0/15 | 1 |
| Hostname | Domains |
|---|---|
| ns0.bt.net | 4 |
| ns1.bt.net | 4 |
| ns2.bt.net | 4 |
| ns.mcsglobal.co.uk | 1 |
| ns1.mcsglobal.co.uk | 1 |
| ukbfsns01.enea.com | 1 |
| ns1.weuk.net | 1 |
| ns2.weuk.net | 1 |
| ns3.weuk.net | 1 |
| berk.figleaves.com | 1 |
| drut.figleaves.com | 1 |
| Hostname | Domains |
|---|---|
| mail.ennob.dk | 2 |
| mail.domainplus.dk | 1 |
| mx2.sophos.com | 1 |
| mx5.sophos.com | 1 |
| mx6.sophos.com | 1 |
| mail2.fusemetrix.com | 1 |
| mail.123-domain.dk | 1 |
| mail1.southwickcentral.co.uk | 1 |
| mail.galabingo.dk | 1 |
| mail.123domains.dk | 1 |
| mail.b0nne.dk | 1 |