Every .dk domain whose website address (A record) is announced by AS559, 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.
SWITCH announces 126 prefixes (117 IPv4, 9 IPv6) and reaches the internet through 10 upstream networks.
| Upstream | Name | Power |
|---|---|---|
| AS6939 | Hurricane Electric LLC | |
| AS6461 | Zayo Bandwidth | |
| AS20965 | GEANT Vereniging | |
| AS7195 | EDGEUNO S.A.S | |
| AS37468 | Angola Cables | |
| AS14840 | BR.Digital Telecom | |
| AS8220 | COLT Technology Services Group Limited | |
| AS4230 | CLARO S.A. | |
| AS3320 | DTAG Deutsche Telekom AG | |
| AS20485 | TRANSTELECOM Joint Stock Company TransTeleCom |
Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.