hello. my domain has expire some years ago and now i want to register it again.
after i try whois i see that one of company (somthing like expire domain seller)

renew it . i dont know why .

ns4.dnsauthority.com
ns5.dnsauthority.com


how can i have it on my panel?
they dont answer me.

What is the domain name you want to renew?
Typically registrars give you up to 30 days from the domain expiry date to renew (sometimes at a premium). Once this 30 days have passed then if someone else purchases it, you have pretty much lost the domain unless you decide to contact them and negotiate a price to buy it back.

I'm having the same issue. All the advice I can say is keep trying to get in though with them.

It is weird that all the domain expire companies you can't get in contact with.

Some years ago is some years too late :). As Anthony said, you have about 30 days