cannot access some sites

I've got an odd problem that I cannot access some sites through Plusnet (eg http://bobbybrewster.org.uk/),
even though I can access them via https://www.proxysite.com/ so they are up.

This is hosted on Penguin Internet at server2.pcs-net.com (91.207.50.20)
I can ping server1.pcs.com (91.207.50.10) and server3.pcs.com (91.207.50.30) fine.

I don't know if this is a Plusnet routing issue or something at Penguin (I've raised a ticket there).
Any suggestions for what may be wrong and how to diagnose more precisely.

~~~~~~~~~~~~~~~>tracert 91.207.50.10

Tracing route to server1.pcs-net.com [91.207.50.10]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms BTHUB [192.168.1.254]
2 5 ms 5 ms 5 ms 172.16.14.105
3 * * * Request timed out.
4 9 ms 8 ms 8 ms 140.hiper04.sheff.dial.plus.net.uk [195.166.143.140]
5 8 ms 8 ms 7 ms 195.99.125.142
6 8 ms 8 ms 8 ms peer7-et-0-1-5.telehouse.ukcore.bt.net [109.159.252.90]
7 9 ms 9 ms 10 ms 166-49-214-194.gia.bt.net [166.49.214.194]
8 * * * Request timed out.
9 9 ms 8 ms 9 ms be2398.ccr21.lon01.atlas.cogentco.com [130.117.51.209]
10 8 ms 8 ms 8 ms 149.6.2.138
11 13 ms 14 ms 13 ms sv7.unicorn1.hns.net [31.210.132.9]
12 12 ms 14 ms 14 ms sv170.unicorn0.hns.net [31.210.132.53]
13 13 ms 13 ms 14 ms sv175.ngd0.hns.net [31.210.132.57]
14 12 ms 13 ms 12 ms server1.pcs-net.com [91.207.50.10]

Trace complete.

~~~~~~~~~~~~~~~>tracert 91.207.50.20

Tracing route to server2.pcs-net.com [91.207.50.20]
over a maximum of 30 hops:

1 1 ms <1 ms <1 ms 192.168.1.254
2 5 ms 4 ms 4 ms 172.16.14.105
3 * 8 ms 8 ms 137.hiper04.sheff.dial.plus.net.uk [195.166.143.137]
4 8 ms 8 ms 8 ms 136.hiper04.sheff.dial.plus.net.uk [195.166.143.136]
5 8 ms 8 ms 8 ms core1-BE1.southbank.ukcore.bt.net [195.99.125.130]
6 10 ms 9 ms 8 ms 109.159.252.140
7 13 ms 9 ms 11 ms 166-49-209-132.gia.bt.net [166.49.209.132]
8 10 ms 8 ms 9 ms 166-49-209-131.gia.bt.net [166.49.209.131]
9 10 ms 9 ms 9 ms be3487.ccr41.lon13.atlas.cogentco.com [154.54.60.5]
10 10 ms 10 ms 10 ms be2868.ccr21.lon01.atlas.cogentco.com [154.54.57.154]
11 9 ms 9 ms 8 ms 149.6.2.138
12 13 ms 13 ms 14 ms sv7.unicorn1.hns.net [31.210.132.9]
13 13 ms 12 ms 12 ms sv170.unicorn0.hns.net [31.210.132.53]
14 14 ms 14 ms 15 ms sv175.ngd0.hns.net [31.210.132.57]
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.

I can't reach the site you link to either, but that doesn't narrow it down any, as I'm also with Plusnet.

Downforeveryone reckons it's up.

Edit: Cancel that. You might want to edit your link, as you've included some spurious characters that stopped it working. It worked when cleaned up.

Edited by TLM (Mon 07-Sep-20 18:55:23)

my home bt connection can access it, but I have to remove the last few characters "/)," from the link

Resolved very quickly by Penguin support.

I had password issues that caused them to lock me out of access to that particular server.
Thank you both for checking.

Edited by StephenTodd (Mon 07-Sep-20 19:01:35)