🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS39686, 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
889992026-07-012026-08-242026-10-18
8 latest0 over 110 days

Active .dk domains whose website address (A record) is announced by AS39686, counted once a day.

🌐 AS39686 at a glance#

Eurofiber Nederland BV

AS39686 is announced by Eurofiber Nederland BV (The Netherlands) and currently hosts 8 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 11 unique IPv4 addresses on this network, and the domains currently sit in 4 IPv4 CIDR blocks covering roughly 29.7 thousand addresses of IPv4 space.

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

The network is part of the .dk zone's infrastructure too: 13 distinct nameservers and 9 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

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 AS39686#

via ipbot.dk

AS-EUROFIBER Eurofiber Nederland BV announces 97 prefixes (77 IPv4, 20 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS35625Eurofiber France SAS
100.0%
AS3356Level 3 Parent, LLC
66.3%
AS3257GTT-BACKBONE GTT Communications Inc.
65.6%
AS6939Hurricane Electric LLC
34.9%
AS33891Core-Backbone GmbH
7.3%
AS6461Zayo Bandwidth
4.9%
AS25091IP-Max SA
4.5%
AS200020NBIP-AS Stichting NBIP-NaWas
3.9%
AS5405INTERDOTLINK Inter.link GmbH
3.7%
AS34019Hivane Association
3.4%

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

🔻 Networks using AS39686 as upstream#

16 networks
NetworkNameDomainsPower
AS205185DCSPINE Eurofiber Cloud Infra B.V.—
100.0%
AS35625Eurofiber France SAS—
89.3%
AS50309Arcadiz Telecom NV—
35.7%
AS43751KEYTRADE Arkea Direct Bank SA—
13.4%
AS13684ASN-MEDTRONIC-1 - Medtronic, Incorporated—
12.5%
AS11676Conduent Business Services, LLC—
12.1%
AS40850AS-UPIX-40850 - UPIX NETWORKS INTERNATIONAL LLC—
8.9%
AS270814ZAAZ PROVEDOR DE INTERNET E TELECOMUNICACOES LTDA—
4.5%
AS5432PROXIMUS-ISP-AS Proximus NV—
2.3%
AS200020NBIP-AS Stichting NBIP-NaWas—
1.6%
AS5583ORANGE-BUSINESS-SERVICES-BENELUX Orange S.A.—
0.8%
AS32244Liquid Web, L.L.C116
0.5%
AS42567MOJHOST-EU MOJOHOST B.V.—
0.3%
AS48638Cronos NV—
0.1%
AS29028COMPUKOS-AS DirectVPS B.V.—
0.1%
AS49935SmartEye B.V—
0.1%

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#

4 CIDRs

🧭 Nameservers in this AS#

13 hosts

📮 Mail Exchangers in this AS#

9 hosts
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