🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS8001, 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#

111 days
112332026-07-012026-08-252026-10-19
2 latest0 over 111 days

Active .dk domains whose website address (A record) is announced by AS8001, counted once a day.

🌐 AS8001 at a glance#

Cologix, Inc

AS8001 is announced by Cologix, Inc (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 2 unique IPv4 addresses on this network, and the domains currently sit in 2 IPv4 CIDR blocks covering roughly 12.3 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: no nameservers and 1 distinct mail exchanger serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 1 of the domains hosted here (50.0%) 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 AS8001#

via ipbot.dk

Cologix, Inc announces 60 prefixes (54 IPv4, 6 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6461Zayo Bandwidth
100.0%
AS3356Level 3 Parent, LLC
53.8%
AS174Cogent Communications, LLC
51.1%
AS1299TWELVE99 Arelion Sweden AB
47.0%
AS9002RETN Limited
9.8%
AS6939Hurricane Electric LLC
8.2%
AS13030Init7 (Switzerland) Ltd.
4.6%
AS33891Core-Backbone GmbH
2.4%
AS2497IIJ - Internet Initiative Japan Inc.
1.1%
AS25091IP-Max SA
0.9%

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

🔻 Networks using AS8001 as upstream#

1 network
NetworkNameDomainsPower
AS48254TWENTYI 20i Limited634
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.

📡 Known CIDRs#

2 CIDRs

📮 Mail Exchangers in this AS#

1 host
HostnameDomains
gylstorff-ahrensbach.dk 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone