🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS39923, 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#

108 days
10101111112026-07-012026-08-232026-10-16
11 latest+1 over 108 days

Active .dk domains whose website address (A record) is announced by AS39923, counted once a day.

🌐 AS39923 at a glance#

Unix-Solutions BV

AS39923 is announced by Unix-Solutions BV (Belgium) and currently hosts 11 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 5 unique IPv4 addresses on this network, and the domains currently sit in 4 IPv4 CIDR blocks covering roughly 4.4 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: 6 distinct nameservers and 11 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 AS39923#

via ipbot.dk

AS-UNIXSOLUTIONS Unix-Solutions BV announces 44 prefixes (37 IPv4, 7 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS8220COLT Technology Services Group Limited
100.0%
AS2914NTT-DATA-2914 - NTT America, Inc.
61.0%
AS6939Hurricane Electric LLC
36.6%
AS13237LAMBDANET-AS euNetworks GmbH
11.2%
AS13030Init7 (Switzerland) Ltd.
5.0%
AS34019Hivane Association
2.5%
AS1103SURFNET-NL SURF B.V.
1.5%
AS8298IPng Networks GmbH
1.4%
AS3303Swisscom (Schweiz) AG
1.3%
AS30844Liquid Telecommunications Ltd
0.8%

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

🔻 Networks using AS39923 as upstream#

1 network
NetworkNameDomainsPower
AS208725Devrandom.be BV—
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#

6 hosts

📮 Mail Exchangers in this AS#

11 hosts
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