🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS40443, 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.

📈 Domains over time#

116 days
011222026-07-012026-08-272026-10-24
1 latest0 over 116 days

Active .dk domains whose website address (A record) is announced by AS40443, counted once a day.

🌐 AS40443 at a glance#

CDK Global, LLC

AS40443 is announced by CDK Global, LLC (United States) and currently hosts 1 .dk domain 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 2 thousand addresses of IPv4 space.

We have yet to observe any IPv6 (AAAA) hosting on this AS.

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.

🛰️ Upstream providers of AS40443#

via ipbot.dk

Unknown announces 20 prefixes (20 IPv4, 0 IPv6) and reaches the internet through 3 upstream networks.

UpstreamNamePower
AS174Unknown
100.0%
AS3356Unknown
92.6%
AS6461Unknown
87.8%

Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.

Found 1 domain matching 40443
DomainIPASNISP / OrgCountry
cdkglobal.dk 207.186.150.166 AS40443 CDK Global, LLC 🇺🇸 United States

📡 Known CIDRs#

1 CIDR
CIDRDomains
207.186.144.0/21 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone