https://www.sixxs.net/tools/traceroute/ reports: Hop Node Loss% Sent Last Avg Best Worst StDev Traceroutes from beanr01 are temporarily unavailable Hop Node Loss% Sent Last Avg Best Worst StDev ASN Organisation Traceroutes from czprg01 are temporarily unavailable Hop Node Loss% Sent Last Avg Best Worst StDev ASN Organisation Traceroutes from usbos01 are temporarily unavailable This seems to be the case for every source (I've tried at least 6). I have tried both numeric addresses and (DNS) hostnames in my IPv6 (SixXs) address space with the same result. It also fails with ipv6.google.com [2a00:1450:400c:c06::67]. I've received the same "temporarily unavailable" message every time I've tried to use the tool over the past 3 months or so. So unless I've been very unlucky in my choice of times, there seems to be a persistent problem with this tool, not just a temporary one.