Web Hosting servers for a domain -- clear DNS cache without re-logon


  1. jimbo45
    Posts : 11,247
    Windows / Linux : Arch Linux
       New #1

    Web Hosting servers for a domain -- clear DNS cache without re-logon


    Hi folks

    If you have a domain hosted by a hosting service with their DNS servers how do you clear the cache after a DNS update on their server. DNS update has been registered, active and works with PING.

    After update etc - and the update has been refreshed and active I'm still seeing the hosting site's "Parking" initial page when using standard browsers - IE11 / Edge / Firefox and not my Index.php page (php / apache etc is all active).

    I don't want to re-boot my existing computer which would clear the cache as it's a network server and would mean disconnecting around 7 computers.

    Cheers
    jimbo
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  3. Bree
    Posts : 31,630
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       New #2

    From an elevated command prompt:
    ipconfig /flushdns
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  4. Samuria
    Posts : 8,104
    windows 10
       New #3

    If a isp updates its dns and you use that dns it it will show but if your using another dns for your pc it can take days to get updated as it has to update world wide which is millions of servers
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  6. jimbo45
    Posts : 11,247
    Windows / Linux : Arch Linux
    Thread Starter
       New #4

    Bree said:
    From an elevated command prompt:
    ipconfig /flushdns
    Hi there

    That only clears out from your computer via the ISP you are using

    I need the DNS's to be flushed from the REMOTE web site !!!!! not on the local computer !!! - The local computer isn't hosting the website.

    @Bree @Samuria

    Samuria's answer was the correct one as obviously it took time for the change to be propagated around the Internet --it's working properly now.

    The Hosting panel on my remote site now records DNS changed and active -- must have had a pending change for a while.

    I learn something everyday (even at my age !!!). still it keeps Brain active and hopefully dementia away.

    Cheers
    jimbo
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  7. z3r010
    Posts : 10,740
    Windows 11 Workstation x64
       New #5

    What ttl do have for your dns records? for best results and reduction of stale DNS you should always lower this as low as possible before making any DNS changes.
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  8. jimbo45
    Posts : 11,247
    Windows / Linux : Arch Linux
    Thread Starter
       New #6

    z3r010 said:
    What ttl do have for your dns records? for best results and reduction of stale DNS you should always lower this as low as possible before making any DNS changes.
    Hi there
    Thanks @z3r010

    value is : Currently 86400 I think that's the default --any suggestions on what I should set it at for next time.

    Web Hosting servers for a domain -- clear DNS cache without re-logon-snapshot8.png

    Thanks for the info -- I'm still new to this game so still playing around before I go live.

    Cheers
    jimbo
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  9. z3r010
    Posts : 10,740
    Windows 11 Workstation x64
       New #7

    86400 is one day that means a client will only check for DNS changes every 24 hours and if you change things will lead to a long wait for an update.

    If you are making changes it's best to set them as low as possible until you are happy that your site is settled, when I move servers I set then DNS to 5 minute (300 ttl) the day before and 1 minute (60 ttl) just before I start moving IP's this ensures that all clients update to the new IP within 1 minute.

    Once I'm happy everything is Ok I set them at 1 hour (3600) as if I need to move the site in a hurry that is the longest I would want to have people cached for.
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  10. jimbo45
    Posts : 11,247
    Windows / Linux : Arch Linux
    Thread Starter
       New #8

    Hi there

    Thanks

    I really appreciate all this Free Tuition !!!!

    Cheers
    jimbo
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