Unable to reproduce. It might have been a temporary issue with one of our mirrors. Please reopen if the problem persists, after an apt-get update && apt-get upgrade.

Unfortunately the issue is persistent (has been for 5-6 weeks now). This happens because I'm from the Netherlands and when upgrading Kali resolves to non working IP-addresses. This could be solved by resolving or rerouting to mainstream working IP-addresses for upgrades.

A work-around I'm using now is that I update through TOR-network. Because of different IP from endstation I get resolved to other working IP-addresses for upgrading.

The 109.72.87.236 IP is mirror.pcextreme.nl, a mirror close to you. That mirror seems to be working fine, at least from the point of view of the mirror redirector that tests it regularly (both via rsync and via HTTP).

Maybe you should get in touch with your ISP to understand why the connection doesn't work ?

traceroute 109.72.87.236 might help to understand where it blocks. We could also ask the mirror operator if you can give us your own IP.

traceroute to 109.72.87.236 (109.72.87.236), 30 hops max, 60 byte packets
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That traceroute is definitely not normal. You should get the answer of your immediate gateway in most cases. Are you sure that you don't have a firewall close to you that blocks the traffic to that host or the network it's part of?

In any case, you should get in touch with your network operator (or ISP) because it's not our fault...

Here's what it looks like from here:
$ traceroute 109.72.87.236
traceroute to 109.72.87.236 (109.72.87.236), 30 hops max, 60 byte packets
1 Freebox-Server.local (192.168.1.1) 0.453 ms 0.438 ms 0.634 ms
2 78.225.60.254 (78.225.60.254) 22.599 ms 24.258 ms 24.732 ms
3 213.228.22.126 (213.228.22.126) 26.605 ms
4 lyon-crs16-1-be1005.intf.routers.proxad.net (212.27.50.181) 34.516 ms 34.559 ms 34.559 ms
5 marseille-6k-1-po50.intf.routers.proxad.net (212.27.50.101) 38.781 ms 39.121 ms 39.147 ms
6 p11-crs16-1-be1102.intf.routers.proxad.net (78.254.249.89) 48.280 ms
7 bzn-crs16-2-be2000.intf.routers.proxad.net (78.254.250.125) 38.130 ms
8 te0-1-0-4.377.mag21.par01.atlas.cogentco.com (149.6.115.25) 50.525 ms te0-7-0-10.365.mag21.par01.atlas.cogentco.com (149.6.160.101) 78.256 ms te0-4-0-35.373.mag21.par01.atlas.cogentco.com (149.6.115.17) 77.517 ms
9 be2038.ccr21.par01.atlas.cogentco.com (154.54.74.253) 53.631 ms be2040.mpd21.par01.atlas.cogentco.com (154.54.78.37) 53.266 ms be2038.ccr21.par01.atlas.cogentco.com (154.54.74.253) 54.336 ms
10 te0-1-1-1.ccr22.ams03.atlas.cogentco.com (130.117.51.97) 91.577 ms te0-3-0-5.mpd22.ams03.atlas.cogentco.com (154.54.37.6) 64.592 ms te0-5-0-5.mpd22.ams03.atlas.cogentco.com (130.117.51.81) 91.511 ms
11 te1-1.ccr01.ams02.atlas.cogentco.com (154.54.60.134) 86.057 ms te3-1.ccr01.ams02.atlas.cogentco.com (154.54.60.126) 87.464 ms te2-1.ccr01.ams02.atlas.cogentco.com (154.54.60.130) 88.262 ms
12 149.11.80.66 (149.11.80.66) 59.712 ms 149.11.80.70 (149.11.80.70) 89.254 ms 149.11.80.66 (149.11.80.66) 61.029 ms
13 core2.ams02.pcextreme.nl (89.30.133.18) 91.787 ms 92.378 ms 94.436 ms
14 mpr2.ams02.pcextreme.nl (92.63.170.30) 91.448 ms 92.377 ms 93.114 ms
15 hosted.by.pcextreme (109.72.87.236) 93.498 ms 94.849 ms 85.558 ms