natega.rb

require 'uri'
require 'net/http'
require 'pp'
require 'json'
natega = File.new('natega.txt', 'w')

seat_number = 427_360 # write start seat number
count = 10

(seat_number..seat_number + count).each do |seat|
  url = URI('http://natega.youm7.com/Home/GetResultStage1/')
  response = Net::HTTP.post_form(url, 'SeatNumber' => seat)
  record = JSON.parse(response.read_body)
  natega.puts record
  puts seat
end

natega.close

this to get natega from natega.yooum7.com

good job

line 8 & 25 , number should be seatNumber ?

i think line 7 should be count.times do , you didn't use count