🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS8859, 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
223442026-07-012026-08-242026-10-18
3 latest0 over 110 days

Active .dk domains whose website address (A record) is announced by AS8859, counted once a day.

🌐 AS8859 at a glance#

OSN Online Service Nuernberg GmbH

AS8859 is announced by OSN Online Service Nuernberg GmbH (Germany) and currently hosts 3 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 3 unique IPv4 addresses on this network, and the domains currently sit in 2 IPv4 CIDR blocks covering roughly 16.6 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: 3 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 AS8859#

via ipbot.dk

OSN Online Service Nuernberg GmbH announces 5 prefixes (5 IPv4, 0 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS1299TWELVE99 Arelion Sweden AB
100.0%
AS174Cogent Communications, LLC
79.6%
AS6939Hurricane Electric LLC
21.1%
AS25091IP-Max SA
5.6%
AS35280F5 F5 Networks SARL
5.6%
AS5405INTERDOTLINK Inter.link GmbH
5.6%
AS6777AMS-IX-RS Amsterdam Internet Exchange B.V.
5.6%
AS15576NTS workspace AG
4.2%
AS34019Hivane Association
4.2%
AS12779IT.Gate S.p.A.
2.8%

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

📡 Known CIDRs#

2 CIDRs

🧭 Nameservers in this AS#

3 hosts
HostnameDomains
dns.osn.de 5
dns.osn.org 5
dns1.osn.de 1

📮 Mail Exchangers in this AS#

3 hosts
HostnameDomains
mx1.osn.de 12
mx2.osn.de 12
mx3.osn.de 11
dhd.dk [/] search Domains, Hosts & DNS — .dk zone