We pick d.root-servers.net, one of the 13 root servers (1), and ask it about 8.6.a.1.1.0.0.2.ip6.arpa and learn that ip6.arpa is delegated to six name servers (2), so we ask d.ip6-servers.arpa where we learn that a.1.1.0.0.2.ip6.arpa is delegated to six name servers, including pri.authdns.ripe.net (3), so we ask that one and learn that 8.6.a.1.1.0.0.2.ip6.arpa is delegated to two name servers (4), so we ask dns.atman.pl and get the following answer:
8.6.a.1.1.0.0.2.ip6.arpa is a domain controlled by two domain name servers at atman.pl having a total of four IP numbers. Two of them are on the same IP network.
Most of the more than hundred domains that use the primary name server dns.atman.pl use name server group 1 (example: 202.79.77.in-addr.arpa, gaweda.com and promedica24.se ). Worth noting is that all of the domains that use name server group 1 use the primary name server dns.atman.pl.
The three name servers dns.atman.pl, dns.brebank.com.pl and dns1.brebank.com.pl together
The two name servers dns2.atman.pl and dns.toya.net.pl together
There are about sixty domains that use the two name servers dns2.atman.pl and dns.toya.net.pl together, hereafter referred to as "name server group 4".