Can't access certain websites through Plusnet

[#1]

Hello,

I've had PN full fibre since May.  In the past month I've been unable to access Topcashback or Nationwide Building society when I'm connected through Plusnet.  It's the same whether I go through my PC (Hardwired to the router) or through my phone (via Wifi).  If I disconnect my phone and go to 4G or put in a VPN on the PC then I get though.

Read up on this and I turned off the router (TPLink AX3000) for a while so I received a new IP address.  All worked fine for a day then resorted back to the problem

My current IP is 146.198.238.xx.  If I run this though a blacklist check I get a blocked report from zen.spamhaus.org

I can't see any blockers on the router my end.

Does anyone have any ideas?

Thanks

Matt

[#2]

Does anyone have any ideas?

Yes - Topcashback and Nationwide are using out-of-date geolocation data - ignore the zen.spamhaus.org result.

[#3]

@maffie587 Just to eliminate one possible issue causing your underling problem: I can get both sites without problems on a PlusNet  connection. But I have an 80.xx.xx.xx address.

[#4]

I've logged into my Nationwide account in the past 1-3 days, obviously using online access to the site.

IP addresses? My IP address range appears to now be restricted to a /25. That's my current assessment.