If you want to index your backlinks faster in Google naturally, This is the best method to go on. As it is officially provided by Google, it will surely help you in indexing of your links.
1. Go to the Ping URLs Online to Search Engines.
2. Input your backlink giving URL in the box and verify the challenge.
3. Click on submit URL
Then, Google will crawl the page within 24 hours. If there are no issues in indexing of the link giving URL, they will index it.
Build links to the link giving URL
It is better to build link to the link giving URL If you are in a need of getting your backlinks indexed in Google. I know, it is hard to build links to a page or a site.
But there are few ways to build links that help you in Indexing.
1. Social bookmarking
Bookmark the page which is giving you the link back. All of the social bookmarking sites are really active and gets updated frequently. So they have higher crawl rate. So, If you bookmark the link giving URL, you can index it easily.
2. Use web 2.0 sites
Web 2.0 sites which can help you to index your backlinks quickly in Google for free. All you need to do is Sign up for an account and start a new site/blog
Start writing an article related to the link giving URL and give a link to the link giving URL. When Google crawls your new web 2.0 site, It will also crawl your link giving URL. Thus, your limits get indexed.
3. Blog commenting
Start commenting on some ******** blogs with the URL of your link giving page. When Googlebot visit the page, It will also crawl your link giving URL. Thus, your link gets indexed easily.
4. Make a YouTube video
Make a video related to your link giving URL and input your link giving URL in the description.
YouTube is a video hosting site by Google. So, Google crawls it for every 2 hours. So your backlinks will be indexed easily.
5. Use a Forum
Choose a relevant question to your backlink URL and at the end of your answer, Link to the Link giving URL.
Well, there are many another method for building links. But, these methods work really faster.