Every .dk domain whose website address (A record) is announced by AS39563, 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 AS39563, counted once a day.
AS39563 is announced by CTA Systems B.V. (The Netherlands) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 1 unique IPv4 address on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 1 thousand addresses of IPv4 space.
IPv6 is live here too: 3 domains (150.0%) publish AAAA records from this AS, resolving to 2 unique IPv6 addresses across 1 prefix (about 4.3 billion /64 networks of space).
We have not observed any nameservers or mail exchangers for .dk domains on this AS — the domains hosted here run their DNS and mail from other networks.
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.
UCSYSTEMS CTA Systems B.V. announces 10 prefixes (9 IPv4, 1 IPv6) and reaches the internet through 10 upstream networks.
Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.
| CIDR | Domains |
|---|---|
| 2a0c:3900:0:0:0:0:0:0/32 | 3 |
| 185.231.16.0/22 | 2 |