text = 'http://w...content-available-to-author-only...e.info www.escola.ninja.br google.com.ag'
puts text.scan(/(?:http:\/\/)?(?:www\.)?\w+\.\w{2,}(?:\.\w{2,})?/)
dGV4dCA9ICdodHRwOi8vdy4uLmNvbnRlbnQtYXZhaWxhYmxlLXRvLWF1dGhvci1vbmx5Li4uZS5pbmZvIHd3dy5lc2NvbGEubmluamEuYnIgZ29vZ2xlLmNvbS5hZycKcHV0cyB0ZXh0LnNjYW4oLyg/Omh0dHA6XC9cLyk/KD86d3d3XC4pP1x3K1wuXHd7Mix9KD86XC5cd3syLH0pPy8p