Dears I wonder if someone can guide me in the direction for troubleshooting my DNS issues.
I work in the regional ISP, we have to DNS servers where it works fine for most of the Domain names but it cannot resolve some others, like dyn.com. When I try to do dig + trace , below is the output, the txt in red shows that for that specific domain the DNS server cannot resolve it, please guide me to the proper procedure for troubleshooting such problem. dig dyn.com +trace ; <<>> DiG 9.3.4-P1 <<>> dyn.com +trace ;; global options: printcmd . 518394 IN NS j.root-servers.net. . 518394 IN NS k.root-servers.net. . 518394 IN NS l.root-servers.net. . 518394 IN NS m.root-servers.net. . 518394 IN NS a.root-servers.net. . 518394 IN NS b.root-servers.net. . 518394 IN NS c.root-servers.net. . 518394 IN NS d.root-servers.net. . 518394 IN NS e.root-servers.net. . 518394 IN NS f.root-servers.net. . 518394 IN NS g.root-servers.net. . 518394 IN NS h.root-servers.net. . 518394 IN NS i.root-servers.net. ;; Received 512 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms com. 172800 IN NS h.gtld-servers.net. com. 172800 IN NS g.gtld-servers.net. com. 172800 IN NS e.gtld-servers.net. com. 172800 IN NS j.gtld-servers.net. com. 172800 IN NS c.gtld-servers.net. com. 172800 IN NS l.gtld-servers.net. com. 172800 IN NS d.gtld-servers.net. com. 172800 IN NS i.gtld-servers.net. com. 172800 IN NS m.gtld-servers.net. com. 172800 IN NS f.gtld-servers.net. com. 172800 IN NS k.gtld-servers.net. com. 172800 IN NS b.gtld-servers.net. com. 172800 IN NS a.gtld-servers.net. ;; Received 497 bytes from 192.58.128.30#53(j.root-servers.net) in 112 ms dyn.com. 172800 IN NS ns1.p01.dynect.net. dyn.com. 172800 IN NS ns3.p01.dynect.net. dyn.com. 172800 IN NS ns2.p01.dynect.net. dyn.com. 172800 IN NS ns4.p01.dynect.net. ;; Received 175 bytes from 192.54.112.30#53(h.gtld-servers.net) in 167 ms dig: couldn't get address for 'ns1.p01.dynect.net': failure Thank you Best Regards Samir Abid Ali Core Network Manager Gorannet ISP Mobile:07703-587-625 Office:053 5111 000 ext. 1032
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