🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS36291, 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#

112 days
112332026-07-012026-08-252026-10-20
2 latest0 over 112 days

Active .dk domains whose website address (A record) is announced by AS36291, counted once a day.

🌐 AS36291 at a glance#

Sanofi

AS36291 is announced by Sanofi (United States) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 1 unique IPv4 address on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 1 thousand addresses of IPv4 space.

We have yet to observe any IPv6 (AAAA) hosting on this AS.

We have not observed any nameservers or mail exchangers for .dk domains on this AS — the domains hosted here run their DNS and mail from other networks.

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 AS36291#

via ipbot.dk

Sanofi announces 10 prefixes (10 IPv4, 0 IPv6) and reaches the internet through 3 upstream networks.

UpstreamNamePower
AS3356Level 3 Parent, LLC
100.0%
AS7018ATT-INTERNET4 - AT&T Enterprises, LLC
100.0%
AS15830Equinix (EMEA) Acquisition Enterprises B.V.
0.4%

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

Found 2 domains matching 36291
DomainIPASNISP / OrgCountry
fleabuster.dk 205.137.77.76 AS36291 Sanofi 🇺🇸 United States
frontlinecombo.dk 205.137.77.76 AS36291 Sanofi 🇺🇸 United States

📡 Known CIDRs#

1 CIDR
CIDRDomains
205.137.76.0/22 2
dhd.dk [/] search Domains, Hosts & DNS — .dk zone