Free Ping Submission Sites List 2018-2019

Free Ping Submission Sites List 2019. Do you know that almost 70% back-links on the internet are never indexed by Google and other search engines?

http://www.blogsearch.google.com/ping
https://pingler.com/
https://www.totalping.com/
https://www.backlinkping.com/
http://googleping.com/
http://www.ping.in/
http://pingomatic.com/
http://www.pingmyblog.com/
https://www.twingly.com/ping
https://www.backlinkping.com/
http://www.pingoat.net/
http://www.pingsitemap.com/
http://pingsitemap.com/
http://www.bulkping.com/
http://www.pingmyurl.com/
http://www.pingfarm.com/