🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS8426, 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
18181919192026-07-012026-08-242026-10-18
18 latest-1 over 110 days

Active .dk domains whose website address (A record) is announced by AS8426, counted once a day.

🌐 AS8426 at a glance#

Claranet Limited

AS8426 is announced by Claranet Limited (United Kingdom) and currently hosts 18 .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 9 IPv4 CIDR blocks covering roughly 216.1 thousand addresses of IPv4 space.

IPv6 is live here too: 2 domains (11.1%) publish AAAA records from this AS, resolving to 1 unique IPv6 address across 1 prefix (about 4.3 billion /64 networks of space).

The network is part of the .dk zone's infrastructure too: 15 distinct nameservers and 7 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 3 of the domains hosted here (16.7%) 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 AS8426#

via ipbot.dk

Claranet Limited announces 104 prefixes (86 IPv4, 18 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS3257GTT-BACKBONE GTT Communications Inc.
100.0%
AS6939Hurricane Electric LLC
99.3%
AS6461Zayo Bandwidth
30.9%
AS6453TATA COMMUNICATIONS (AMERICA) INC
29.3%
AS9002RETN Limited
13.4%
AS6777AMS-IX-RS Amsterdam Internet Exchange B.V.
12.1%
AS4637ASN-TELSTRA-GLOBAL - Telstra Global
7.6%
AS37468Angola Cables
4.2%
AS8220COLT Technology Services Group Limited
3.7%
AS13335CLOUDFLARENET - Cloudflare, Inc.
2.8%

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

🔻 Networks using AS8426 as upstream#

2 networks
NetworkNameDomainsPower
AS5533CLARANET-PT Claranet Portugal S.A—
100.0%
AS34948TYPHON-AS Claranet SAS—
40.3%

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.

📡 Known CIDRs#

10 CIDRs

🧭 Nameservers in this AS#

15 hosts

📮 Mail Exchangers in this AS#

7 hosts
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