🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS47720, 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#

113 days
112332026-07-012026-08-262026-10-21
2 latest0 over 113 days

Active .dk domains whose website address (A record) is announced by AS47720, counted once a day.

🌐 AS47720 at a glance#

Cork Internet Exchange Limited

AS47720 is announced by Cork Internet Exchange Limited (Ireland) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 3 unique IPv4 addresses 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: 3 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 AS47720#

via ipbot.dk

CIX-AS Cork Internet Exchange Limited announces 17 prefixes (14 IPv4, 3 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS8220COLT Technology Services Group Limited
99.9%
AS3257GTT-BACKBONE GTT Communications Inc.
70.0%
AS1273CW - IDDQD-AS
56.8%
AS25091IP-Max SA
5.0%
AS34549meerfarbig GmbH & Co. KG
4.4%
AS50304Blix Solutions AS
2.9%
AS34927iFog GmbH
2.5%
AS5405INTERDOTLINK Inter.link GmbH
2.4%
AS14840BR.Digital Telecom
2.0%

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

📡 Known CIDRs#

1 CIDR
CIDRDomains
91.223.9.0/24 2

🧭 Nameservers in this AS#

3 hosts

📮 Mail Exchangers in this AS#

1 host
HostnameDomains
server1.rpmpower.com 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone