About a week ago, I followed the AWS Route 53 instructions for creating a subdomain hosted zone to handle traffic for "request.i-codedesign.com".
The hosted zone provisioned these NS servers:
ns-1009.awsdns-62.net.
ns-1198.awsdns-21.org.
ns-1.awsdns-00.com.
ns-1807.awsdns-33.co.uk.
Also a week ago, I updated our DNS Service (Dotster) to add the above Name Server records:
For a while this worked well, traffic was getting to the intended server.
Within the past week, it stopped working. What steps can I take to troubleshoot this? I've tried nslookup request.i-codedesign.com ns-1.awsdns-00.com
, for example, but it just returns four sets of "DNS request timed out. timeout was 2 seconds."
EDIT
When I try from home, the address resolves and I can see my web app.
From here, this is the nslookup result:
C:\jhfrench>nslookup
Default Server: Wireless_Broadband_Router.home
Address: 192.168.1.1
> set debug
> request.i-codedesign.com
Server: Wireless_Broadband_Router.home
Address: 192.168.1.1
------------
Got answer:
HEADER:
opcode = QUERY, id = 2, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0
QUESTIONS:
request.i-codedesign.com.home, type = A, class = IN
AUTHORITY RECORDS:
-> home
ttl = 3600 (1 hour)
primary name server = home
responsible mail addr = (root)
serial = 10274
refresh = 3600 (1 hour)
retry = 3600 (1 hour)
expire = 3600 (1 hour)
default TTL = 3600 (1 hour)
------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 3, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0
QUESTIONS:
request.i-codedesign.com.home, type = AAAA, class = IN
AUTHORITY RECORDS:
-> home
ttl = 3600 (1 hour)
primary name server = home
responsible mail addr = (root)
serial = 10275
refresh = 3600 (1 hour)
retry = 3600 (1 hour)
expire = 3600 (1 hour)
default TTL = 3600 (1 hour)
------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 4, rcode = NOERROR
header flags: response, want recursion, recursion avail.
questions = 1, answers = 1, authority records = 0, additional = 0
QUESTIONS:
request.i-codedesign.com, type = A, class = IN
ANSWERS:
-> request.i-codedesign.com
internet address = 54.225.172.91
ttl = 300 (5 mins)
------------
Non-authoritative answer:
------------
Got answer:
HEADER:
opcode = QUERY, id = 5, rcode = NOERROR
header flags: response, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0
QUESTIONS:
request.i-codedesign.com, type = AAAA, class = IN
AUTHORITY RECORDS:
-> request.i-codedesign.com
ttl = 900 (15 mins)
primary name server = ns-1828.awsdns-36.co.uk
responsible mail addr = awsdns-hostmaster.amazon.com
serial = 1
refresh = 7200 (2 hours)
retry = 900 (15 mins)
expire = 1209600 (14 days)
default TTL = 86400 (1 day)
------------
Name: request.i-codedesign.com
Address: 54.225.172.91