🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS21409, 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
2 latest-1 over 110 days

Active .dk domains whose website address (A record) is announced by AS21409, counted once a day.

🌐 AS21409 at a glance#

Ikoula Net SAS

AS21409 is announced by Ikoula Net SAS (France) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 6 unique IPv4 addresses on this network, and the domains currently sit in 4 IPv4 CIDR blocks covering roughly 43 thousand addresses of IPv4 space.

IPv6 is live here too: 1 domain (50.0%) publish AAAA records from this AS, resolving to 4 unique IPv6 addresses across 1 prefix (about 4.3 billion /64 networks of space).

The network is part of the .dk zone's infrastructure too: 5 distinct nameservers 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 AS21409#

via ipbot.dk

Ikoula Net SAS announces 19 prefixes (17 IPv4, 2 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS6762SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.
96.3%
AS174Cogent Communications, LLC
50.3%
AS3257GTT-BACKBONE GTT Communications Inc.
39.5%
AS1299TWELVE99 Arelion Sweden AB
22.8%
AS13030Init7 (Switzerland) Ltd.
4.1%
AS25091IP-Max SA
3.1%
AS33891Core-Backbone GmbH
3.1%
AS34549meerfarbig GmbH & Co. KG
3.1%
AS5405INTERDOTLINK Inter.link GmbH
3.1%

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

Found 2 domains matching 21409
DomainIPASNISP / OrgCountry
everblack.dk 78.24.133.175 AS21409 Ikoula Net SAS 🇫🇷 France
ikoula.dk 109.238.9.3 +3 AS21409 Ikoula Net SAS 🇫🇷 France

📡 Known CIDRs#

5 CIDRs

🧭 Nameservers in this AS#

5 hosts

📮 Mail Exchangers in this AS#

1 host
HostnameDomains
mail.everblack.dk 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone