Ping Sites

 https://pingler.com/

https://pingomatic.com/

https://mypagerank.net/

https://totalping.com/

http://pingfarm.com/

http://indexkings.com/

http://pingomatic.com/

https://www.pingmylinks.com

http://ping.feedburner.com

http://pingmyblog.com/

http://www.backlinkping.com

http://totalping.com

http://pingsitemap.com

http://www.pingfarm.com/

http://mypagerank.net/

https://ping.twingly.com/

https://ping.in/

http://pingoat.net/

http://pingates.com/

http://www.addurl.nu/

https://massping.org/

https://pingbomb.com/

https://www.freewebsubmission.com/

https://submitx.com/