linkup.nl is not working for me.
however, iqarus.net is reachable from my end:
Tracing route to linkup.nl [83.98.182.30]
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms 192.168.0.1
2 7 ms 8 ms 8 ms 10.116.128.1
3 8 ms 7 ms * gw03.flfrd.phub.net.cable.rogers.com [66.185.90.
241]
4 7 ms 6 ms 8 ms gw01.flfrd.phub.net.cable.rogers.com [66.185.83.
169]
5 12 ms 11 ms 11 ms gw02.mtnk.phub.net.cable.rogers.com [66.185.82.1
25]
6 33 ms 33 ms 33 ms igw01.ny8th.phub.net.cable.rogers.com [66.185.81
.13]
7 84 ms 39 ms 37 ms so-5-0-0.mpr1.lga1.us.above.net [64.124.128.193]
8 45 ms 37 ms 38 ms so-7-0-0.cr1.lga1.us.above.net [64.125.27.141]
9 124 ms 131 ms 123 ms so-7-0-0.mpr3.ams1.nl.above.net [64.125.27.186]
10 116 ms 119 ms 118 ms 141.ge3-0.mpr1.ams1.nl.above.net [62.93.194.26]
11 * * * Request timed out.
12