On Mon, Jul 04, 2016 at 05:18:27PM +0530, Amit Kumar Gupta wrote: > Dear All, > Please find the desired o/ps. > > bash-3.2# dig dropbox.com @203.94.243.70 > > ; <<>> DiG 9.6-ESV-R4-P2 <<>> dropbox.com @203.94.243.70 > ;; global options: +cmd > ;; connection timed out; no servers could be reached > bash-3.2#
Your client (the machine you are running dig on) probably does not have a route to 203.94.243.70. Maybe something on the path is filtering packets. > bash-3.2# dig +trace dropbox.com > > ; <<>> DiG 9.6-ESV-R4-P2 <<>> +trace dropbox.com > ;; global options: +cmd > . 495997 IN NS b.root-servers.net. > . 495997 IN NS e.root-servers.net. > . 495997 IN NS a.root-servers.net. > . 495997 IN NS i.root-servers.net. > . 495997 IN NS j.root-servers.net. > . 495997 IN NS m.root-servers.net. > . 495997 IN NS l.root-servers.net. > . 495997 IN NS k.root-servers.net. > . 495997 IN NS c.root-servers.net. > . 495997 IN NS h.root-servers.net. > . 495997 IN NS d.root-servers.net. > . 495997 IN NS g.root-servers.net. > . 495997 IN NS f.root-servers.net. > . 496015 IN RRSIG NS 8 0 518400 20160714050000 > 20160704040000 46551 . > Gjt4qXWy+cQjMelzL3gB+H6uUsg8RTjo11j4Qa8AMlxKGwziBsTUAhm+ > b9kgxwMTUUozV9Q2OS5La2V6ISyXDITTOGEQ1fKH7hwgboWJKSXmKD7Z > WNKv2CipQm3kktswMfRXC4Q8XQPtkvSwiR8/OyGk1OCNOY2WdOMgUdcS dM8= > ;; Received 501 bytes from 203.94.243.70#53(203.94.243.70) in 2 ms > > com. 172800 IN NS j.gtld-servers.net. > com. 172800 IN NS a.gtld-servers.net. > com. 172800 IN NS m.gtld-servers.net. > com. 172800 IN NS c.gtld-servers.net. > com. 172800 IN NS i.gtld-servers.net. > com. 172800 IN NS l.gtld-servers.net. > com. 172800 IN NS b.gtld-servers.net. > com. 172800 IN NS f.gtld-servers.net. > com. 172800 IN NS h.gtld-servers.net. > com. 172800 IN NS e.gtld-servers.net. > com. 172800 IN NS k.gtld-servers.net. > com. 172800 IN NS g.gtld-servers.net. > com. 172800 IN NS d.gtld-servers.net. > ;; Received 501 bytes from 192.5.5.241#53(f.root-servers.net) in 10851 ms > > dropbox.com. 172800 IN NS ns-564.awsdns-06.net. > dropbox.com. 172800 IN NS ns-315.awsdns-39.com. > dropbox.com. 172800 IN NS ns-1162.awsdns-17.org. > dropbox.com. 172800 IN NS ns-1949.awsdns-51.co.uk. > ;; Received 198 bytes from 192.26.92.30#53(c.gtld-servers.net) in 10002 ms > > dropbox.com. 60 IN A 108.160.172.206 > dropbox.com. 60 IN A 108.160.172.238 > dropbox.com. 172800 IN NS ns-1162.awsdns-17.org. > dropbox.com. 172800 IN NS ns-1949.awsdns-51.co.uk. > dropbox.com. 172800 IN NS ns-315.awsdns-39.com. > dropbox.com. 172800 IN NS ns-564.awsdns-06.net. > ;; Received 198 bytes from 205.251.193.59#53(ns-315.awsdns-39.com) in 10002 > ms On the other hand, the client has routes to the nameservers listed in this trace and seems to be able to resolve dropbox.com directly. Mukund
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