🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS401742, 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#

110 days
112222026-07-012026-08-242026-10-18
2 latest+1 over 110 days

Active .dk domains whose website address (A record) is announced by AS401742, counted once a day.

🌐 AS401742 at a glance#

ServerOptima

AS401742 is announced by ServerOptima (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 2 IPv4 CIDR blocks covering roughly 512 addresses of IPv4 space.

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

The network is part of the .dk zone's infrastructure too: no nameservers and 1 distinct mail exchanger serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 1 of the domains hosted here (50.0%) 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 AS401742#

via ipbot.dk

ServerOptima announces 23 prefixes (19 IPv4, 4 IPv6) and reaches the internet through 5 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD
48.9%
AS174Cogent Communications, LLC
19.6%
AS6461Zayo Bandwidth
19.2%
AS49915Megaport (UK) Limited
2.4%

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

Found 2 domains matching 401742
DomainIPASNISP / OrgCountry
ghashul.dk 65.49.60.174 AS401742 ServerOptima 🇺🇸 United States
mojos.dk 74.82.63.151 AS401742 ServerOptima 🇺🇸 United States

📡 Known CIDRs#

2 CIDRs
CIDRDomains
65.49.60.0/24 1
74.82.63.0/24 1

📮 Mail Exchangers in this AS#

1 host
HostnameDomains
mail.emegir.dk 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone