Need help for poor soul (dog)

Hello All, I am looking for a good dog rescue or pet rescue contact. There is a dog near my society who is always tied up day and night, and kept outside the house the whole night. He barks out of misery and I am pretty sure it is scared like hell as well. The age of the dog must be less than 1 year, we started seeing him since couple of months. It is a street dog and tied in the alley which is visible from my flat. I do not want to confront the people directly because I am a pretty sure they will bring up the north indian or hindi problem and this would definitely deviate from the dog to something else.

I do not wanna disclose my identity for security reasons.

Any help would be much appreciated. To