accept only visitors from USA and block some Organizations and ISP

Dear sir, I have solution for this project. Please message me so we can talk more and start now. Thank you and waiting here from you!

I will BLOCK ALL COUNTRIES. I have 7 years experience in this industry. I am ready to start now. Thanks and regards, Asha

Hey There, I would like to help you with this process. I want to block some region or organization, I can block them easily from your analytics. Please give me your details for starting the job. Thanks, Imdad

Dear Prospect Hiring Manager. Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned "I can do this job and give you an efficient job that will be very acceptable and presentable. I and my team work on web development and mobile apps and I can assure you that you will never be disappointed"

hi, i'm an expert in security and web development. j can do it in 1 day please contact me for info and discuss it

I have done this before, will do it within a day , ping me and send me the ip's and the website login ,i will do it know so it would be good for you, thanks in advance.

That’s very easy. Please provide more details whether you want this as php script Apache server .htaccess conf file or as firewall rule?!