1. Browse to http://www.digwebinterface.com/
2. Enter the list of hosts you wish to test under Hostnames or IP addresses:
3. Select Resolver under Name Servers:
4. Check Trace under Options
5. Click Dig
Additional Information:
The first set of name servers you see next to your domain are your authoritative DNS servers as listed that your TLD's registry. For example, here's a dig +trace of ultradns.net:
ultradns.net@8.8.4.4 (Default):
. 15502 IN NS k.root-servers.net.
. 15502 IN NS m.root-servers.net.
. 15502 IN NS b.root-servers.net.
. 15502 IN NS e.root-servers.net.
. 15502 IN NS a.root-servers.net.
. 15502 IN NS d.root-servers.net.
. 15502 IN NS c.root-servers.net.
. 15502 IN NS f.root-servers.net.
. 15502 IN NS g.root-servers.net.
. 15502 IN NS l.root-servers.net.
. 15502 IN NS i.root-servers.net.
. 15502 IN NS j.root-servers.net.
. 15502 IN NS h.root-servers.net.
;; Received 228 bytes from 8.8.4.4#53(8.8.4.4) in 110 ms
net. 172800 IN NS c.gtld-servers.net.
net. 172800 IN NS h.gtld-servers.net.
net. 172800 IN NS i.gtld-servers.net.
net. 172800 IN NS k.gtld-servers.net.
net. 172800 IN NS e.gtld-servers.net.
net. 172800 IN NS g.gtld-servers.net.
net. 172800 IN NS f.gtld-servers.net.
net. 172800 IN NS b.gtld-servers.net.
net. 172800 IN NS a.gtld-servers.net.
net. 172800 IN NS l.gtld-servers.net.
net. 172800 IN NS m.gtld-servers.net.
net. 172800 IN NS d.gtld-servers.net.
net. 172800 IN NS j.gtld-servers.net.
;; Received 499 bytes from 192.36.148.17#53(192.36.148.17) in 175 ms
ultradns.net. 172800 IN NS pdns3.ultradns.org.
ultradns.net. 172800 IN NS pdns4.ultradns.org.
ultradns.net. 172800 IN NS pdns1.ultradns.net.
ultradns.net. 172800 IN NS pdns2.ultradns.net.
ultradns.net. 172800 IN NS pdns5.ultradns.info.
ultradns.net. 172800 IN NS pdns6.ultradns.co.uk.
;; Received 277 bytes from 192.5.6.30#53(192.5.6.30) in 63 ms
ultradns.net. 300 IN A 204.74.99.100
ultradns.net. 86400 IN NS pdns1.ultradns.net.
ultradns.net. 86400 IN NS pdns2.ultradns.net.
ultradns.net. 86400 IN NS pdns3.ultradns.org.
ultradns.net. 86400 IN NS pdns4.ultradns.org.
ultradns.net. 86400 IN NS pdns5.ultradns.info.
ultradns.net. 86400 IN NS pdns6.ultradns.co.uk.
;; Received 205 bytes from 204.74.108.1#53(204.74.108.1) in 1 ms
Here it is again with explanations of what each section means:
ultradns.net@8.8.4.4 (Default):
. 15502 IN NS k.root-servers.net.
. 15502 IN NS m.root-servers.net.
. 15502 IN NS b.root-servers.net.
. 15502 IN NS e.root-servers.net.
. 15502 IN NS a.root-servers.net.
. 15502 IN NS d.root-servers.net.
. 15502 IN NS c.root-servers.net.
. 15502 IN NS f.root-servers.net.
. 15502 IN NS g.root-servers.net.
. 15502 IN NS l.root-servers.net.
. 15502 IN NS i.root-servers.net.
. 15502 IN NS j.root-servers.net.
. 15502 IN NS h.root-servers.net.
;; Received 228 bytes from 8.8.4.4#53(8.8.4.4) in 110 ms
Above are the root servers. They are authoritative for Root (.). External lookups for uncached answers start here.
net. 172800 IN NS c.gtld-servers.net.
net. 172800 IN NS h.gtld-servers.net.
net. 172800 IN NS i.gtld-servers.net.
net. 172800 IN NS k.gtld-servers.net.
net. 172800 IN NS e.gtld-servers.net.
net. 172800 IN NS g.gtld-servers.net.
net. 172800 IN NS f.gtld-servers.net.
net. 172800 IN NS b.gtld-servers.net.
net. 172800 IN NS a.gtld-servers.net.
net. 172800 IN NS l.gtld-servers.net.
net. 172800 IN NS m.gtld-servers.net.
net. 172800 IN NS d.gtld-servers.net.
net. 172800 IN NS j.gtld-servers.net.
;; Received 499 bytes from 192.36.148.17#53(192.36.148.17) in 175 ms
These are the authoritative name servers for the NET TLD.
ultradns.net. 172800 IN NS pdns3.ultradns.org.
ultradns.net. 172800 IN NS pdns4.ultradns.org.
ultradns.net. 172800 IN NS pdns1.ultradns.net.
ultradns.net. 172800 IN NS pdns2.ultradns.net.
ultradns.net. 172800 IN NS pdns5.ultradns.info.
ultradns.net. 172800 IN NS pdns6.ultradns.co.uk.
;; Received 277 bytes from 192.5.6.30#53(192.5.6.30) in 63 ms
Above are the NS records that your registrar has submitted to the NET registry. It’s this section that will eventually after whenever you change authoritative DNS at your registrar.
ultradns.net. 300 IN A 204.74.99.100
ultradns.net. 86400 IN NS pdns1.ultradns.net.
ultradns.net. 86400 IN NS pdns2.ultradns.net.
ultradns.net. 86400 IN NS pdns3.ultradns.org.
ultradns.net. 86400 IN NS pdns4.ultradns.org.
ultradns.net. 86400 IN NS pdns5.ultradns.info.
ultradns.net. 86400 IN NS pdns6.ultradns.co.uk.
;; Received 205 bytes from 204.74.108.1#53(204.74.108.1) in 1 ms
These are the answers provided by the current authoritative DNS provider. These NS records will update if you update the NS records in the zone file at this DNS provider.