🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS17161, 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#

109 days
112332026-07-012026-08-242026-10-17
2 latest0 over 109 days

Active .dk domains whose website address (A record) is announced by AS17161, counted once a day.

🌐 AS17161 at a glance#

Marsh Inc.

AS17161 is announced by Marsh 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 1 unique IPv4 address on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 4.1 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: 2 distinct nameservers and no 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 AS17161#

via ipbot.dk

MMC - Marsh Inc. announces 26 prefixes (26 IPv4, 0 IPv6) and reaches the internet through 4 upstream networks.

UpstreamNamePower
AS15830Equinix (EMEA) Acquisition Enterprises B.V.
100.0%
AS701UUNET - Verizon Business
66.0%
AS3257GTT-BACKBONE GTT Communications Inc.
60.5%
AS286KPN GTT Communications Inc.
0.2%

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

Found 2 domains matching 17161
DomainIPASNISP / OrgCountry
mercerhr.dk 205.156.140.51 AS17161 Marsh Inc. 🇺🇸 United States
merceric.dk 205.156.140.51 AS17161 Marsh Inc. 🇺🇸 United States

📡 Known CIDRs#

1 CIDR
CIDRDomains
205.156.128.0/20 2

🧭 Nameservers in this AS#

2 hosts
HostnameDomains
ns01.mmc.com 17
ns03.mmc.com 17
dhd.dk [/] search Domains, Hosts & DNS — .dk zone