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Can DNS multiple CNAME?
2 Answers. Multiple CNAME records for the same fully-qualified domain name is a violation of the specs for DNS. Some versions of BIND would allow you to do this (some only if you specified the multiple-cnames yes option) and would round-robin load-balance between then but it’s not technically legal.
How do I query all DNS records for a domain?
For Windows:
- Launch Windows Command Prompt by navigating to Start > Command Prompt or via Run > CMD.
- Type NSLOOKUP and hit Enter.
- Set the DNS Record type you wish to lookup by typing set type=## where ## is the record type, then hit Enter.
- Now enter the domain name you wish to query then hit Enter..
Can a CNAME point to a specific page?
You can’t redirect to a specific URL via DNS. DNS allows you to set up a CNAME record that “converts” one server name to another, i.e. www.mydomain.com to www.google.com.
Can CNAME point to CNAME?
CNAME records can point to other CNAME records, but this is not considered a good practice as it is inefficient. MX and NS records must never point to a CNAME alias. Domains that are used for e-mail may not have a CNAME record – this can have undesirable results with different mail servers.
Can a CNAME have slashes?
No. CNAME records can only point to DNS records.
How does the CNAME record work in DNS?
A DNS resolver receives the request and finds the Authoritative Name Server that holds the DNS Zone file with DNS records for the “example.com” domain. The DNS request is resolved and the CNAME record is returned to the client.
Can a CNAME be placed at the root domain?
A CNAME cannot be placed at the root domain level, because the root domain is the DNS Start of Authority (SOA) which must point to an IP address. CNAME records must point to another domain name, never to an IP address.
Why is CNAME not resolving to the IP address?
CNAME lookups will only work for a few seconds after clearing the cache and then they fail to resolve down to the IP address. I took two packet captures. Here was the one to the internal server that failed. It stops at the CNAME. The one to the external server shows it resolve on down to the IP address.
What to do if your DNS server is not resolving?
This then will call for a DNS A record lookup ( AAAA for IPv6) to return the IP address for that host. If the CNAME is failing for internal requests then your internal DNS server is not performing a recursive lookup for internal clients. Thanks for your feedback!