🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS51821, 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#

Not enough history to chart yet — this series is collected once a day. Check back tomorrow.

🛰️ Upstream providers of AS51821#

via ipbot.dk

FORTLAX Cloudist AB announces 10 prefixes (10 IPv4, 0 IPv6) and reaches the internet through 2 upstream networks.

UpstreamNamePower
AS3301TELIANET-SWEDEN Telia Company AB
100.0%
AS1257SWIPNET - Tele2 Sverige AB
66.0%

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

Found 0 domains matching 51821
🔍
No results found in the database.

🧭 Nameservers in this AS#

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