Contents
What is the purpose of the AAAA DNS record?
An AAAA record is used to find the IP address of a computer connected to the internet from a name. The AAAA record is conceptually similar to the A record, but it allows you to specify the IPv6 address of the server, rather than the IPv4.
What is DNS server timeout?
The DNS timeout setting is referring to DNS server resource records with a Time To Live (TTL) value of 300 seconds. 86400 seconds (24 hours) was common in the past. Caches should normally use the record’s TTL. If you decide to set your own cache, then use *.
Why do I get slow response to my DNS lookups?
I observed a long delay >5 seconds from her browser, for both Pandora.com and facebook.com in her browser, opened a command prompt, then issued an nslookup for facebook.com. The resolution came back in less than a second and the browser immediately populated with the result.
When does a DNS server have a resolution timeout?
This article describes the fallback and timeout behavior that exist when one or more DNS Servers IPs are configured as forwarders or conditional forwarders on a DNS server. Check NET: DNS: DNS client resolution timeouts for more information about DNS client resolution timeouts.
Why is DNS look up time so important?
A factor that is often overlooked is the lookup times associated with DNS, and just how much of an impact it has on your site. Just like with TTFB and network latency, it’s an important piece of the puzzle when it comes to calculating your total page load times.
Where to find DNS forwarding timeout in registry?
ForwardingTimeout – how long the Domain Name System (DNS) waits for each server in the list in Forwarders to respond to a query. It’s saved in the registry under HKLM\\SYSTEM\\CurrentControlSet\\Services\\DNS\\Parameters\\**ForwardingTimeout and configurable via dnscmd /config /ForwardingTimeout .