Why does my browser talk to cpc25-finc13-2-0-cust34.4-2.cable.virginm.net and other [removed] IPs

[tristiano]

Hi,

I've noticed that my web browser connects to various Virgin Media hosts on the [removed] address range on port 80 and I have no idea why. Even if I start in private mode without any tabs open or sites visited I see connections to these addresses. I am using Firefox

Has anybody else noticed this or can shed any light on what could be hosted there ?

Thanks,

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Tristiano

[Adduxi]

How are you finding out this information? Can you show some screenshots etc?

[Client62]

Oh la la ...  cpc25-finc13-2-0-cust34.4-2.cable-virginm-net
is your customer host name your VM Hub is using Public IP  62-252-115-35

No need to be concerned this is all quite normal.

Here are the details for 62-252-115-0/24

https://whatismyipaddress.com/ip/62.252.115.0

[tristiano]

Hi,

Thanks for your interest! I am running Linux (boot not VM) and noticed the activity on an lsof -i

The snippet above was with several windows open but as mentioned I have seen this activityu with no windows open straight after a browser start. I have disabled extensions and since then I have done tcpdumps and seen the same activity.

Thanks,

[tristiano]

No I don't think so!

My IP ends with

[cje85 · Accepted solution]

Virgin Media don't pay much attention to hostnames and often repurpose IPs without updating the hostname. It may be that your browser is checking for updates upon launch, by pinging an CDN server. VM have caches of major CDNs within their network and the hostnames for these can be completely outdated. I've even seen some relating to NTL Dial Up modem connections.

[tristiano]

Ok some kind of CDN could make sense and ease my paranoia! I was concerned when I saw what looked like a connection to another cable customer ..

Thanks

[Akua_A]

Hi @tristiano 

Welcome back to our community forums and sorry to hear you were worried about your web browser behaviour. We can understand your concern. We are however glad to see that the community was able to help bring some clarity to the issue. Please do not hesitate to contact us if you need any further help.

Thanks,