Nameservers with same IP, can cause high time to first byte?

Discussion in 'Linux Networking' started by postcd, May 1, 2014.

  1. postcd

    postcd Member

    Apr 16, 2014
    Likes Received:
    Hello, when analysed domain by i got:

    Different subnets - WARNING: Not all of your nameservers are in different subnets
    Different autonomous systems - WARNING: Single point of failure

    Its because my nameservers are both pointed to same IP. How can this influence time to first byte? Meaning wait time when website load / resolve time. Can this be even 500 miliseconds slower? thx
  2. Pantek Support

    Pantek Support New Member

    Jul 8, 2014
    Likes Received:
    This shouldn't influence "time to first byte" necessarily, but having both nameservers pointed to the same IP address is not recommended because as the WARNING suggested, it does present a single point of failure. If you have an outage or issue on that IP address or subnet, all your DNS lookups globally will fail.

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