Are there any working ping services for the site?

Question

Ping

Hello, I’m setting up my news site, the following ping services have already been recorded from somewhere:

rpc.pingomatic.com
ping.blogs.yandex.ru/RPC2
blogsearch.google.ru/ping/RPC2

I found these on the internet:

blogsearch.google.ru/ping/RPC2
www.blogsearch.google.com/ping/RPC2
api.my.yahoo.com/RPC2
rpc.pingomatic.com
ping.feedburner.com
www.rpc.technorati.jp/rpc/ping
rpc.icerocket.com:10080
ping.blogs.yandex.ru/RPC2

Can you please tell me if they work? where can i get workers?
CA - USA and other English-speaking countries