🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS5650, 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#

113 days
112222026-07-012026-08-262026-10-21
2 latest+1 over 113 days

Active .dk domains whose website address (A record) is announced by AS5650, counted once a day.

🌐 AS5650 at a glance#

Frontier Communications of America, Inc.

AS5650 is announced by Frontier Communications of America, 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 20.5 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, 2 of the domains hosted here (100.0%) validate as DNSSEC-secure — well above 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 AS5650#

via ipbot.dk

FRONTIER-FRTR - Frontier Communications of America, Inc. announces 1,028 prefixes (1,021 IPv4, 7 IPv6) and reaches the internet through 8 upstream networks.

UpstreamNamePower
AS174Cogent Communications, LLC
100.0%
AS701UUNET - Verizon Business
37.7%
AS6939Hurricane Electric LLC
14.8%
AS8220COLT Technology Services Group Limited
1.9%
AS60068CDN77 Datacamp Limited
1.8%
AS401426MHN - St. Mary's Medical Center, Inc.
0.0%
AS6327Shaw Communications
0.0%
AS20326TeraSwitch Networks Inc.
0.0%

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

🔻 Networks using AS5650 as upstream#

3 networks
NetworkNameDomainsPower
AS16677AZO - AutoZone Inc—
100.0%
AS19108SUDDENLINK-COMMUNICATIONS - Optimum—
97.7%
AS401426MHN - St. Mary's Medical Center, Inc.—
68.6%

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
mx.mail.fage 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone