🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS37721, 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 AS37721#

via ipbot.dk

Virtual Technologies & Solutions announces 159 prefixes (62 IPv4, 97 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS3356Level 3 Parent, LLC
21.6%
AS6461Zayo Bandwidth
16.0%
AS6762SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.
15.6%
AS174Cogent Communications, LLC
15.6%
AS3257GTT-BACKBONE GTT Communications Inc.
10.0%
AS5511Opentransit Orange S.A.
9.7%
AS1273CW - IDDQD-AS
8.8%
AS1299TWELVE99 Arelion Sweden AB
8.6%
AS6453TATA COMMUNICATIONS (AMERICA) INC
7.9%

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

🔻 Networks using AS37721 as upstream#

2 networks
NetworkNameDomainsPower
AS328316Point d'Atterissement Virtuel - Burkina Faso - Point d'Atterissement Virtuel - Burkina Faso—
100.0%
AS37008Sancfis Faso SA—
55.4%

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 37721
🔍
No results found in the database.
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