🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS58321, 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
17212631352026-07-012026-08-242026-10-17
18 latest-10 over 109 days

Active .dk domains whose website address (A record) is announced by AS58321, counted once a day.

🌐 AS58321 at a glance#

Oxylion Sp. z o.o.

AS58321 is announced by Oxylion Sp. z o.o. (Poland) and currently hosts 18 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 1 unique IPv4 address on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 256 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: 39 distinct nameservers and no 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 AS58321#

via ipbot.dk

Oxylion Sp. z o.o. announces 16 prefixes (15 IPv4, 1 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS12741AS-NETIA Netia SA
100.0%
AS3257GTT-BACKBONE GTT Communications Inc.
56.9%
AS1299TWELVE99 Arelion Sweden AB
45.8%
AS6939Hurricane Electric LLC
10.0%
AS33891Core-Backbone GmbH
2.2%
AS24115ASN-EQIX-MLPE - Equinix
1.5%
AS24482SGGS-AS-AP - SG.GS
0.5%
AS6204ZET-NET INTERKVM HOST SRL
0.5%
AS286KPN GTT Communications Inc.
0.4%
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD
0.2%

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

🔻 Networks using AS58321 as upstream#

3 networks
NetworkNameDomainsPower
AS29522CF-KRK Cyber_Folks S.A.57
100.0%
AS41079CF-GDA Cyber_Folks S.A.184
92.7%
AS34360OGICOM Cyber_Folks S.A.—
43.1%

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#

1 CIDR
CIDRDomains
91.198.146.0/24 18

🧭 Nameservers in this AS#

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