Any way to extract certain bytes from the remote file?

[Vjay77]

I posted this question, but I pressed 'post' and it disappeared. So
once again:

Problem:
I need to go to lets say www.site.com/page.html

Imagine that this html code is 6 mb long.

I need to extract information between bytes 5000 and 5020.

So, obviously problem is, that I do not want to download the whole 6
mb file to extract only 20 bytes.

I will need to do this maybe thousands times a day and I can't afford
to create such traffic.

Is there a way to extract from remote file using exact position?

Something which would simulate steps:

- go to www.site.com/page.html
- open file for reading
- jump to byte x
- read y number of bytes
- retrieve result
- close file

Is there any way of doing this?

Please help me.

Vjay