🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS2721, 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 AS2721#

via ipbot.dk

SCLR - CULR, LLC announces 6 prefixes (5 IPv4, 1 IPv6) and reaches the internet through 7 upstream networks.

UpstreamNamePower
AS174Cogent Communications, LLC
100.0%
AS11164INTERNET2-I2PX - Internet2
88.0%
AS2711SPIRITTEL-AS - Spirit Communications
14.2%
AS3257GTT-BACKBONE GTT Communications Inc.
11.2%
AS11537INTERNET2-RESEARCH-EDU - Internet2
7.8%
AS2722C-LIGHT - CULR, LLC
4.9%
AS286KPN GTT Communications Inc.
0.1%

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

🔻 Networks using AS2721 as upstream#

1 network
NetworkNameDomainsPower
AS2722C-LIGHT - CULR, LLC—
100.0%

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 0 domains matching 2721
🔍
No results found in the database.
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