🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS39122, 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#

111 days
25252627272026-07-012026-08-252026-10-19
25 latest-2 over 111 days

Active .dk domains whose website address (A record) is announced by AS39122, counted once a day.

🌐 AS39122 at a glance#

Blacknight Internet Solutions Limited

AS39122 is announced by Blacknight Internet Solutions Limited (Ireland) and currently hosts 25 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 12 unique IPv4 addresses on this network, and the domains currently sit in 4 IPv4 CIDR blocks covering roughly 17.4 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: 7 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 AS39122#

via ipbot.dk

Blacknight Internet Solutions Limited announces 29 prefixes (23 IPv4, 6 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS1299TWELVE99 Arelion Sweden AB
100.0%
AS6939Hurricane Electric LLC
58.4%
AS174Cogent Communications, LLC
38.8%
AS7195EDGEUNO S.A.S
7.7%
AS14840BR.Digital Telecom
3.4%
AS1031PEER 1031 LLC
3.0%
AS9002RETN Limited
2.9%
AS37468Angola Cables
2.8%
AS22356Durand do Brasil Ltda
2.8%
AS20764RASCOM-AS CJSC RASCOM
2.5%

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

🔻 Networks using AS39122 as upstream#

3 networks
NetworkNameDomainsPower
AS202448MVPS LTD—
100.0%
AS34989ServeTheWorld AS235
54.2%
AS60592Gransy s.r.o.—
14.3%

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 25 domains matching 39122
DomainIPASNISP / OrgCountry
ardagh.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
ardaghglass.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
ardaghgroup.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
barrystea.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
baseworx.dk 78.153.203.124 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
bevcraft.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
blacknight.dk 81.17.242.117 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
brandcentral.dk 78.153.209.56 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
buttercupsuniforms.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
champions-travel.dk 46.22.143.112 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
dairymaster.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
facet5.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
flogas.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
flybus.dk 81.17.242.77 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
greenjobs.dk 81.17.241.30 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
heidruntapperi.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
irishfood.dk 185.2.66.179 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
lufthavnsbus.dk 81.17.242.77 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
openfitapp.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
shuttledirect.dk 81.17.242.77 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
stelladoradus.dk 81.17.254.13 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
transfers.dk 81.17.242.77 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
unislope.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
water2buy.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland
waterwipes.dk 78.153.212.172 AS39122 Blacknight Internet Solutions Limited 🇮🇪 Ireland

📡 Known CIDRs#

4 CIDRs

🧭 Nameservers in this AS#

7 hosts

📮 Mail Exchangers in this AS#

3 hosts
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