This article provides an extended list of WordPress ping Update Services. This list is an extension of the list provided by the official WordPress documentation, which can be found at https://codex.wordpress.org/Update_Services.
Update Services List
http://rpc.pingomatic.com/http://api.moreover.com/RPC2
http://bblog.com/ping.php
http://blogsearch.google.com/ping/RPC2
http://ping.weblogalot.com/rpc.php
http://ping.feedburner.com
http://ping.syndic8.com/xmlrpc.php
http://ping.bloggers.jp/rpc/
http://rpc.weblogs.com/RPC2
http://rpc.technorati.com/rpc/ping
http://topicexchange.com/RPC2
http://www.blogpeople.net/servlet/weblogUpdates
http://xping.pubsub.com/ping
http://rpc.twingly.com
http://api.feedster.com/ping
http://api.moreover.com/RPC2
http://api.moreover.com/ping
http://www.blogdigger.com/RPC2
http://www.blogshares.com/rpc.php
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://bulkfeeds.net/rpc
http://www.newsisfree.com/xmlrpctest.php
http://ping.blo.gs/
http://ping.feedburner.com
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogalot.com/rpc.php
http://rpc.blogrolling.com/pinger/
http://rpc.technorati.com/rpc/ping
http://rpc.weblogs.com/RPC2
http://www.feedsubmitter.com
http://blo.gs/ping.php
http://www.pingerati.net
http://www.pingmyblog.com
http://geourl.org/ping
http://ipings.com
http://www.weblogalot.com/ping
http://bblog.com/ping.php
http://bitacoras.net/ping
http://blog.goo.ne.jp/XMLRPC
http://blogdb.jp/xmlrpc
http://blogmatcher.com/u.php
http://blogsearch.google.com/ping/RPC2
http://bulkfeeds.net/rpc
http://coreblog.org/ping/
http://mod-pubsub.org/kn_apps/blogchatt
http://ping.blo.gs/
http://ping.bloggers.jp/rpc/
http://ping.feedburner.com
http://ping.rootblog.com/rpc.php
http://pingoat.com/goat/RPC2
http://rpc.blogbuzzmachine.com/RPC2
http://rpc.blogrolling.com/pinger/
http://rpc.weblogs.com/RPC2
http://topicexchange.com/RPC2
http://trackback.bakeinu.jp/bakeping.php
http://www.bitacoles.net/ping.php
http://www.blogoole.com/ping/
http://www.blogpeople.net/servlet/weblogUpdates
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://www.lasermemory.com/lsrpc/
http://www.mod-pubsub.org/kn_apps/blogchatter/ping.php
http://www.newsisfree.com/RPCCloud
http://www.newsisfree.com/xmlrpctest.php
http://www.snipsnap.org/RPC2
http://www.weblogues.com/RPC/
http://xmlrpc.blogg.de
https://www.a2b.cc/setloc/bp.a2b
https://www.blogoole.com/ping/
https://www.blogoon.net/ping/
https://www.blogpeople.net/servlet/weblogUpdates
https://www.blogroots.com/tb_populi.blog?id=1
https://www.blogstreet.com/xrbin/xmlrpc.cgi
https://www.mod-pubsub.org/kn_apps/blogchatter/ping.php
https://www.popdex.com/addsite.php
https://www.snipsnap.org/RPC2
https://www.weblogues.com/RPC/
https://xmlrpc.blogg.de
https://xping.pubsub.com/ping/