Every .dk domain whose website address (A record) is announced by AS51191, 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 AS51191, counted once a day.
AS51191 is announced by Core-Backbone GmbH (Germany) and currently hosts 156 .dk domains in our dataset — 0.01% of all scanned .dk domains. Across all our scans we have observed 4 unique IPv4 addresses on this network, and the domains currently sit in 2 IPv4 CIDR blocks covering roughly 3.1 thousand addresses of IPv4 space.
IPv6 is live here too: 152 domains (97.4%) publish AAAA records from this AS, resolving to 2 unique IPv6 addresses across 1 prefix (about 65.5 thousand /64 networks of space).
The network is part of the .dk zone's infrastructure too: 3 distinct nameservers and 147 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.
On the security side, 0 of the domains hosted here (0.0%) 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.
XIRRA Core-Backbone GmbH announces 258 prefixes (8 IPv4, 250 IPv6) and reaches the internet through 4 upstream networks.
| Upstream | Name | Power |
|---|---|---|
| AS20473 | AS-VULTR - The Constant Company, LLC | |
| AS60068 | CDN77 Datacamp Limited | |
| AS33891 | Core-Backbone GmbH | |
| AS199524 | G-Core Labs S.A. |
Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.
| CIDR | Domains |
|---|---|
| 130.185.104.0/21 | 153 |
| 2a01:4a0:2002:0:0:0:0:0/48 | 152 |
| 185.24.68.0/22 | 3 |
| Hostname | Domains |
|---|---|
| ns1.serverlet.com | 4 |
| ns3.serverlet.it | 4 |
| ns3.xtremeweb.de | 2 |