🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS202509, 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#

112 days
19192020202026-07-012026-08-252026-10-20
19 latest0 over 112 days

Active .dk domains whose website address (A record) is announced by AS202509, counted once a day.

🌐 AS202509 at a glance#

Cloud City Oy

AS202509 is announced by Cloud City Oy (Finland) and currently hosts 19 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 7 unique IPv4 addresses on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 1 thousand addresses of IPv4 space.

IPv6 is live here too: 14 domains (73.7%) publish AAAA records from this AS, resolving to 5 unique IPv6 addresses across 1 prefix (about 34.4 billion /64 networks of space).

The network is part of the .dk zone's infrastructure too: 1 distinct nameserver and 1 distinct mail exchanger 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 AS202509#

via ipbot.dk

Cloud City Oy announces 3 prefixes (2 IPv4, 1 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS16302Suomi Communications Oy
100.0%
AS6667EUNET-FINLAND Elisa Oyj
96.5%
AS16086DNA Oyj
48.6%
AS6939Hurricane Electric LLC
41.6%
AS204779LOCALNETFI Local Loop Oy
37.6%
AS5405INTERDOTLINK Inter.link GmbH
6.4%
AS20764RASCOM-AS CJSC RASCOM
2.3%
AS50304Blix Solutions AS
1.7%
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD
1.2%
AS39351ESAB-AS 31173 Services AB
1.2%

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

📡 Known CIDRs#

2 CIDRs

🧭 Nameservers in this AS#

1 host
HostnameDomains
ns1.cloudcity.fi 12

📮 Mail Exchangers in this AS#

1 host
HostnameDomains
mail-in.cloudcity.fi 10
dhd.dk [/] search Domains, Hosts & DNS — .dk zone