AS40021 is announced by Contabo Inc. (United States) and currently hosts 10 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 5 unique IPv4 addresses on this network, and the domains currently sit in 5 IPv4 CIDR blocks covering roughly 19.5 thousand addresses of IPv4 space.

IPv6 is live here too: 4 domains (40.0%) publish AAAA records from this AS, resolving to 1 unique IPv6 address across 1 prefix (about 17.2 billion /64 networks of space).

The network is part of the .dk zone's infrastructure too: 4 distinct nameservers and 2 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 3 of the domains hosted here (30.0%) validate as DNSSEC-secure — below the zone-wide average of 62.8%. See how this AS compares on the ASN statistics page, or drill into the CIDR list below the results.