🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS44066, 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
34343535352026-07-012026-08-242026-10-17
35 latest0 over 109 days

Active .dk domains whose website address (A record) is announced by AS44066, counted once a day.

🌐 AS44066 at a glance#

firstcolo GmbH

AS44066 is announced by firstcolo GmbH (Germany) and currently hosts 35 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 15 unique IPv4 addresses on this network, and the domains currently sit in 13 IPv4 CIDR blocks covering roughly 48.4 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: 2 distinct nameservers and 3 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 3 of the domains hosted here (8.6%) 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 AS44066#

via ipbot.dk

DE-FIRSTCOLO firstcolo GmbH announces 70 prefixes (54 IPv4, 16 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS1299TWELVE99 Arelion Sweden AB
100.0%
AS174Cogent Communications, LLC
78.0%
AS2914NTT-DATA-2914 - NTT America, Inc.
71.6%
AS6939Hurricane Electric LLC
71.4%
AS3257GTT-BACKBONE GTT Communications Inc.
58.7%
AS51088A2B IP B.V.
23.6%
AS42708Glesys AB
22.1%
AS3320DTAG Deutsche Telekom AG
19.3%
AS13030Init7 (Switzerland) Ltd.
8.4%
AS34549meerfarbig GmbH & Co. KG
7.7%

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

🔻 Networks using AS44066 as upstream#

7 networks
NetworkNameDomainsPower
AS44051Fornex Hosting S.L.—
100.0%
AS31400ACCELERATED-IT firstcolo GmbH—
92.6%
AS214036Ultahost, Inc.—
74.7%
AS42708Glesys AB982
58.2%
AS214895bit datacenters GmbH—
20.5%
AS1921RCODEZERO-ANYCAST-SEC1-TLD ipcom GmbH—
20.0%
AS205948creoline GmbH—
2.9%

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.

Found 35 domains matching 44066
DomainIPASNISP / OrgCountry
2ndc.dk 212.224.92.149 AS44066 firstcolo GmbH 🇩🇪 Germany
aabsaesonkort.dk 82.211.30.219 AS44066 firstcolo GmbH 🇩🇪 Germany
aabsæsonkort.dk 82.211.30.219 AS44066 firstcolo GmbH 🇩🇪 Germany
activize.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
antioxy.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
bihl-wiedemann.dk 84.200.5.36 AS44066 firstcolo GmbH 🇩🇪 Germany
fit-line.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
fitline.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
fitness-drink.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
global-tickets.dk 212.224.110.162 AS44066 firstcolo GmbH 🇩🇪 Germany
hsv-fl.dk 109.232.121.128 AS44066 firstcolo GmbH 🇩🇪 Germany
isoflavon.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
kunstbilleder-galleri.dk 84.201.63.19 AS44066 firstcolo GmbH 🇩🇪 Germany
leuchtturm1917.dk 31.172.90.100 AS44066 firstcolo GmbH 🇩🇪 Germany
malegigolos.dk 212.224.78.27 AS44066 firstcolo GmbH 🇩🇪 Germany
packmee.dk 193.33.155.115 AS44066 firstcolo GmbH 🇩🇪 Germany
pm-i.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
pm-international.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
pminternational.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
pointsharp.dk 212.224.92.149 AS44066 firstcolo GmbH 🇩🇪 Germany
power-cocktail.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
power-drink.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
powercocktail.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
powerdrink.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
q10-oxy-repair.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
q10-oxyrepair.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
q10oxyrepair.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
rameder.dk 212.224.115.26 AS44066 firstcolo GmbH 🇩🇪 Germany
rolf-sorg.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
rolfsorg.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
shirtinator.dk 212.224.126.184 AS44066 firstcolo GmbH 🇩🇪 Germany
ultimate-young.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
ultimateyoung.dk 212.224.106.147 AS44066 firstcolo GmbH 🇩🇪 Germany
unionbank.dk 109.232.121.140 AS44066 firstcolo GmbH 🇩🇪 Germany
weinsberg.dk 84.200.227.134 AS44066 firstcolo GmbH 🇩🇪 Germany

📡 Known CIDRs#

13 CIDRs

🧭 Nameservers in this AS#

2 hosts
HostnameDomains
ns1.octlabs.de 1
ns2.octlabs.de 1

📮 Mail Exchangers in this AS#

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