🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS398019, 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#

109 days
112332026-07-012026-08-242026-10-17
2 latest0 over 109 days

Active .dk domains whose website address (A record) is announced by AS398019, counted once a day.

🌐 AS398019 at a glance#

Dynu Systems Incorporated

AS398019 is announced by Dynu Systems Incorporated (United States) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 2 unique IPv4 addresses 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: 2 domains (100.0%) 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: 2 distinct nameservers and 3 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.

🛰️ Upstream providers of AS398019#

via ipbot.dk

Dynu Systems Incorporated announces 30 prefixes (28 IPv4, 2 IPv6) and reaches the internet through 1 upstream network.

UpstreamNamePower
AS20454SSASN2 - SECURED SERVERS LLC
100.0%

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

📡 Known CIDRs#

2 CIDRs

🧭 Nameservers in this AS#

2 hosts
HostnameDomains
ns1.dynu.com 26
ns2.dynu.com 26

📮 Mail Exchangers in this AS#

3 hosts
dhd.dk [/] search Domains, Hosts & DNS — .dk zone