Unable to access specific IP Address

[mattyboy7110]

I have to connect to a VPN at work and sometime last year I was unable to access it. Support was a nightmare and didn't understand the issue so I requested a static IP address and overnight the static IP address came online and my issue disappeared. Fast forward to just before Christmas and the same issue has come up again.

If I connect my laptop to my mobile or to another VPN provider, I can access the IP Address but from my Vodafone broadband, a traceroute gets as far as this gateway and no further. 

 1  192.168.1.1 (192.168.1.1)  4.094 ms  3.096 ms  2.142 ms

 2  84.65.0.1 (84.65.0.1)  8.278 ms  8.983 ms  8.771 ms

To confuse things, when I had the original problem, before my static IP address, this gateway was also the stopping point. After my static IP address though, the gateway never changed but I was able to access my work VPN.

I'm pretty sure Vodafone are blocking my work VPN IP address. I'd rather not put the IP address on here but need to know what I can do to resolve it or just to diagnose the issue so someone will look at it. As I mentioned, when trying to get support for this last year, the issue was not understood and I'd rather not have to go through that experience again. 

What do I do?

[Ripshod]

No-one has aske for the ip. Giving us the URL would help us dig a little deeper into the dns, blacklists etc etc.

[Jayach]

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@Ripshod wrote:

No-one has aske for the ip. Giving us the URL would help us dig a little deeper into the dns, blacklists etc etc.

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But @mattyboy7110 has said the website uses the same I.P. address, so knowing the URL will give us that, but if the website is public it's I,P. isn't really a secret. 

However they also say others on Vodafone aren't having a problem (didn't mention that earlier!) so the I.P definately isn't blocked, which is what I was hoping to prove/disprove.

So @mattyboy7110 the problem is unique to you. The only odd thing is the tracert dying at your gateway and not going any further.

The gateway you have in a Bracknell datacentre. I wonder if your work server could also be hosted there and somehow that is causing the problem. (really just thinking out load)

[Jayach]

loud, not load, ran out of time to edit.