Unfortunately this is an all too frequent question that is asked around the SEO community online, based on some bad practices and wrong advice offered by black-hat/ unethical SEO companies. To begin with, if a prospective SEO supplier ever offers this within their package or even mentions this type of activity, my advice would be to stay clear (as they do not know what they are talking about).

Search engines such as Google, Bing, and Yahoo prefer to locate each individual URL by themselves so that they can crawl the HTML coding in order to contextualise and rank the page in search results. The three mentioned search engines also hold such a dominant market share that other search engines are relatively dormant. For example in the UK, Google operates 92% of all search queries which therefore highlights the importance of optimising your website and getting indexed on Google. Instead of wasting your time, money, energy and resources on getting indexed on 1,000 search engines, you should look to prioritise your activities to achieve success at the prominent players in the market; Google, Yahoo, and Bing.