Unable to use Claude, does Anthropic ban IPs?

I live in a building where we have the same internet provider throughout. I have set my DNS to google's. Over the last few days, I have been unable to access claude.ai. I get a timed out response.

Initially I thought out ISP is onto something after which I tried to check with other residents. All of them are able to open it on their devices with the same internet. When I use my WiFi/Ethernet to connect, it gets a problem loading the page.

So I started using it with a VPN and it works out just fine. This made me wonder can Anthropic ban an IP and has anyone been in the same boat?

Let me know what are your thoughts on this.