DNS Name Server Entries in Parent Domain

Your domain registrar, for example Network Solutions, maintains the DNS records that resolve your name servers' names to IP's in the parent domain. Your name servers in your start of authority (SOA) might be, for example, ns1.examplename.com and ns2.examplename.com. Records for resolution of those names to IP numbers need to be in the parent domain, such as .com.
You can verify this with the following procedure:

Input	Result
nslookup l.root-servers.net	199.7.83.42
nslookup	C:\>nslookup Default Server: router.Belkin Address: 192.168.2.1 >
server 199.7.83.42	Default Server: l.root-servers.net Address: 199.7.83.42 >
> set norecurse > set q=NS > EXAMPLENAME.com.	Server: l.root-servers.net Address: 199.7.83.42 com nameserver = a.gtld-servers.net com nameserver = b.gtld-servers.net com nameserver = c.gtld-servers.net com nameserver = d.gtld-servers.net com nameserver = e.gtld-servers.net com nameserver = f.gtld-servers.net com nameserver = g.gtld-servers.net com nameserver = h.gtld-servers.net com nameserver = i.gtld-servers.net com nameserver = j.gtld-servers.net com nameserver = k.gtld-servers.net com nameserver = l.gtld-servers.net com nameserver = m.gtld-servers.net a.gtld-servers.net internet address = 192.5.6.30 b.gtld-servers.net internet address = 192.33.14.30 c.gtld-servers.net internet address = 192.26.92.30 d.gtld-servers.net internet address = 192.31.80.30 e.gtld-servers.net internet address = 192.12.94.30 f.gtld-servers.net internet address = 192.35.51.30 g.gtld-servers.net internet address = 192.42.93.30 h.gtld-servers.net internet address = 192.54.112.30 i.gtld-servers.net internet address = 192.43.172.30 j.gtld-servers.net internet address = 192.48.79.30 k.gtld-servers.net internet address = 192.52.178.30 l.gtld-servers.net internet address = 192.41.162.30 m.gtld-servers.net internet address = 192.55.83.30 a.gtld-servers.net AAAA IPv6 address = 2001:503:a83e::2:30 >
server 192.5.6.30	in-addr.arpa nameserver = a.in-addr-servers.arpa in-addr.arpa nameserver = b.in-addr-servers.arpa in-addr.arpa nameserver = c.in-addr-servers.arpa in-addr.arpa nameserver = d.in-addr-servers.arpa in-addr.arpa nameserver = e.in-addr-servers.arpa in-addr.arpa nameserver = f.in-addr-servers.arpa a.in-addr-servers.arpa internet address = 199.212.0.73 b.in-addr-servers.arpa internet address = 199.253.183.183 c.in-addr-servers.arpa internet address = 196.216.169.10 d.in-addr-servers.arpa internet address = 200.10.60.53 e.in-addr-servers.arpa internet address = 203.119.86.101 f.in-addr-servers.arpa internet address = 193.0.9.1 a.in-addr-servers.arpa AAAA IPv6 address = 2001:500:13::73 b.in-addr-servers.arpa AAAA IPv6 address = 2001:500:87::87 c.in-addr-servers.arpa AAAA IPv6 address = 2001:43f8:110::10 d.in-addr-servers.arpa AAAA IPv6 address = 2001:13c7:7010::53 e.in-addr-servers.arpa AAAA IPv6 address = 2001:dd8:6::101 f.in-addr-servers.arpa AAAA IPv6 address = 2001:67c:e0::1 Default Server: [192.5.6.30] Address: 192.5.6.30 >
EXAMPLENAME.com.	Server: [192.5.6.30] Address: 192.5.6.30 EXAMPLENAME.com nameserver = ns1.EXAMPLENAME.com EXAMPLENAME.com nameserver = ns2.EXAMPLENAME.com EXAMPLENAME.com nameserver = ns3.EXAMPLENAME.com ns1.EXAMPLENAME.com internet address = 72.240.197.35 ns2.EXAMPLENAME.com internet address = 72.240.197.36 ns3.EXAMPLENAME.com internet address = 67.224.124.201 >