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Cooney921

: Why doesn't my domain resolve to the hostname CNAME/ALIAS I've specified? I have a domain set with a CNAME alias to point to Heroku, but it is not resolving. Here is a link to a screenshot:

@Cooney921

Posted in: #Cname #Dns

I have a domain set with a CNAME alias to point to Heroku, but it is not resolving.

Here is a link to a screenshot: awesomescreenshot.com/03226ntoc4
And here is the output from nslookup:

$ nslookup -query=any tyger.ac. dns1.name-services.com
Server: dns1.name-services.com
Address: 98.124.192.1

tyger.ac nameserver = dns3.name-services.com
tyger.ac
primary name server = dns1.name-services.com
responsible mail addr = info.name-services.com
serial = 2002050701
refresh = 10800 (3 hours)
retry = 3600 (1 hour)
expire = 604800 (7 days)
default TTL = 3600 (1 hour)
tyger.ac nameserver = dns2.name-services.com
tyger.ac MX preference = 5, mail exchanger = eforwardct.name-services.com
tyger.ac MX preference = 5, mail exchanger = eforwardct3.name-services.com
tyger.ac MX preference = 5, mail exchanger = eforwardct2.name-services.com
tyger.ac nameserver = dns4.name-services.com
tyger.ac nameserver = dns5.name-services.com
tyger.ac nameserver = dns1.name-services.com
dns2.name-services.com internet address = 98.124.197.1
dns3.name-services.com internet address = 98.124.193.1
dns1.name-services.com internet address = 98.124.192.1
dns4.name-services.com internet address = 98.124.194.1
dns5.name-services.com internet address = 98.124.196.1


Here is the destination host:

$ nslookup mie-6031.herokussl.com
Non-authoritative answer:
Server: google-public-dns-a.google.com
Address: 8.8.8.8

Name: elb033514-473924049.us-east-1.elb.amazonaws.com
Addresses: 50.16.211.233
23.23.138.171
54.243.232.221
Aliases: mie-6031.herokussl.com

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@Holmes151

If you have a CNAME alias then you must not have other DNS records (e.g., NS) for that name - see rfc1912 - section 2.4.

I guess that eNom interface just filters out this "CNAME for the whole domain". You must point your root domain name to IP addresses (or make the operator of .ac add a CNAME in their records - probably impossible).

If you use Amazon services, then this information about Amazon Route53 and its alias extension might also be interesting for you (see number 3).

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