🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS57043, 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
991010102026-07-012026-08-242026-10-17
10 latest+1 over 109 days

Active .dk domains whose website address (A record) is announced by AS57043, counted once a day.

🌐 AS57043 at a glance#

Hostkey B.v.

AS57043 is announced by Hostkey B.v. (Türkiye) and currently hosts 10 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 9 unique IPv4 addresses on this network, and the domains currently sit in 4 IPv4 CIDR blocks covering roughly 3.3 thousand 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: 1 distinct nameserver and 5 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 6 of the domains hosted here (60.0%) 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 AS57043#

via ipbot.dk

HOSTKEY B.V. announces 651 prefixes (644 IPv4, 7 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS9002RETN Limited
81.9%
AS174Cogent Communications, LLC
78.1%
AS3257GTT-BACKBONE GTT Communications Inc.
50.6%
AS59692IQWeb FZ-LLC
16.4%
AS49434FBW NETWORKS SAS
14.1%
AS6762SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.
13.9%
AS6677ICENET-AS1 Mila hf
7.8%
AS5405INTERDOTLINK Inter.link GmbH
4.7%
AS3356Level 3 Parent, LLC
4.1%

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

🔻 Networks using AS57043 as upstream#

1 network
NetworkNameDomainsPower
AS216154CLODO CLOUD SERVICE CO. L.L.C—
100.0%

Among the networks we hold ipbot.dk routing data for (the ones looked up on this site), so this is a sample of the AS's customers, not all of them.

📡 Known CIDRs#

4 CIDRs

🧭 Nameservers in this AS#

1 host
HostnameDomains
ns2.vigbo.site 1

📮 Mail Exchangers in this AS#

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