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  3. DNS Cache, craziest thing

DNS Cache, craziest thing

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  • R raddevus

    Oh no! I'm going to be under my desk for a long, long time. :laugh:

    O Offline
    O Offline
    oofalladeez343
    wrote on last edited by
    #12

    I'd go even as far as to move my desk to a galaxy far, far away... :-\ :-\ :-\ :laugh:

    1 Reply Last reply
    0
    • R raddevus

      Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

      P Offline
      P Offline
      Peter Kassenaar
      wrote on last edited by
      #13

      Pinging from The Netherlands, 2022-01-26, 08:25 UTC and got the 64.* address. Seems to be working in order, as I've never visited this address before...

      R 1 Reply Last reply
      0
      • R raddevus

        Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

        pkfoxP Offline
        pkfoxP Offline
        pkfox
        wrote on last edited by
        #14

        My ping gave **64.209.142.205** - I'm in the UK

        "Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP

        R 1 Reply Last reply
        0
        • R raddevus

          Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

          A Offline
          A Offline
          Alister Morton
          wrote on last edited by
          #15

          Just pinged 64... here in the UK.

          R 1 Reply Last reply
          0
          • R raddevus

            So i'm switching to a new WebHost. I switched my DNS hosts to the new ones (in Google Domains) and waited. That worked fine after a wait and my new ip address came up. 65.x.x.x Hours later I'm working on my web site and something odd happens I see the old web site. I ping the site from the same machine where i saw it change to 65.x.x.x (new ip address). It is now pointing back to old one 205.x.x.x :confused: :wtf: No idea. I've flushed local cache etc. Still old one now. I went to my DigitalOcean site and pinged it got 205.x.x.x (OLD ONE!!!) Went to another computer on another network and pinged I get the new one 65.x.x.x. Wha?t!?? :confused: :wtf: :confused: :wtf: :confused: :wtf: :confused: Really exasperating. ## UPDATE ## Problem still occuring. I thought of something: Test on my phone (with wifi turned off -- using cellular data). 1. turned off wifi on my phone and hit newlibre.com -- saw my new web site. 2. turned wifi back on (on phone) and navigated to newlibre.com -- saw the old site. 3. obviously this is cached on my wifi router, right? 4. Imma haf to reboot my wifi router I guess. OY!!! ### UPDATE 2 #### I fired up a Win10 image via VirtualBox and ran ipconfig /flushdns All of a sudden I saw the new IP Address. VirtualBox win10 was running under this Linux machine I'm on. Finally saw the correct IP address here too. I guess it just propagated through, because I never did reboot the wifi router. I've finally crawled back out from under my desk. :rolleyes:

            C Offline
            C Offline
            Clumpco
            wrote on last edited by
            #16

            Next time (hopefully there won't be one, but you never know) try using "nslookup" which allows you to use different name servers to see where the problem lies. By default nslookup uses your default nameserver - just type "nslookup" to start it and get the default, viz:

            C:\Windows\System32>nslookup
            Default Server: pi.hole
            Address: 192.168.1.37

            Now type in the host name that you are looking for

            > www.ibm.com
            Server: pi.hole
            Address: 192.168.1.37

            Non-authoritative answer:
            Name: e7817.dscx.akamaiedge.net
            Addresses: 2a02:26f0:d6:39e::1e89
            2a02:26f0:d6:382::1e89
            104.125.7.129
            Aliases: www.ibm.com
            www.ibm.com.cs186.net
            outer-global-dual.ibmcom-tls12.edgekey.net

            Now change the name server to see if you get the same answer.

            > server 8.8.8.8
            Default Server: dns.google
            Address: 8.8.8.8

            www.ibm.com
            Server: dns.google
            Address: 8.8.8.8
            etc...

            I hope that this helps. P.S. you will notice that I use pi-hole https://pi-hole.net/[^] , if you don't already, you should do! Kills most adverts and dodgy sites.

            So old that I did my first coding in octal via switches on a DEC PDP 8

            R 1 Reply Last reply
            0
            • P Peter Kassenaar

              Pinging from The Netherlands, 2022-01-26, 08:25 UTC and got the 64.* address. Seems to be working in order, as I've never visited this address before...

              R Offline
              R Offline
              raddevus
              wrote on last edited by
              #17

              Thanks for your help. I appreciate it. It looks like it finally propagated through to me too. :thumbsup:

              1 Reply Last reply
              0
              • pkfoxP pkfox

                My ping gave **64.209.142.205** - I'm in the UK

                "Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP

                R Offline
                R Offline
                raddevus
                wrote on last edited by
                #18

                Thanks for letting me know. I appreciate it. It looks like it finally got through on my side too and I see 64.x. :thumbsup:

                1 Reply Last reply
                0
                • A Alister Morton

                  Just pinged 64... here in the UK.

                  R Offline
                  R Offline
                  raddevus
                  wrote on last edited by
                  #19

                  Thanks for trying it out. I appreciate it. It seems like it finally got through to me too. :thumbsup:

                  1 Reply Last reply
                  0
                  • C Clumpco

                    Next time (hopefully there won't be one, but you never know) try using "nslookup" which allows you to use different name servers to see where the problem lies. By default nslookup uses your default nameserver - just type "nslookup" to start it and get the default, viz:

                    C:\Windows\System32>nslookup
                    Default Server: pi.hole
                    Address: 192.168.1.37

                    Now type in the host name that you are looking for

                    > www.ibm.com
                    Server: pi.hole
                    Address: 192.168.1.37

                    Non-authoritative answer:
                    Name: e7817.dscx.akamaiedge.net
                    Addresses: 2a02:26f0:d6:39e::1e89
                    2a02:26f0:d6:382::1e89
                    104.125.7.129
                    Aliases: www.ibm.com
                    www.ibm.com.cs186.net
                    outer-global-dual.ibmcom-tls12.edgekey.net

                    Now change the name server to see if you get the same answer.

                    > server 8.8.8.8
                    Default Server: dns.google
                    Address: 8.8.8.8

                    www.ibm.com
                    Server: dns.google
                    Address: 8.8.8.8
                    etc...

                    I hope that this helps. P.S. you will notice that I use pi-hole https://pi-hole.net/[^] , if you don't already, you should do! Kills most adverts and dodgy sites.

                    So old that I did my first coding in octal via switches on a DEC PDP 8

                    R Offline
                    R Offline
                    raddevus
                    wrote on last edited by
                    #20

                    Very interesting and great information. This will help. Thanks for posting. :thumbsup:

                    1 Reply Last reply
                    0
                    • R raddevus

                      Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

                      D Offline
                      D Offline
                      DerekT P
                      wrote on last edited by
                      #21

                      I recently had some DNS issues, and my hosting provider suggested this whatsmydns.net[^] (which is possibly the most useful thing they've ever suggested :laugh: ) Easy-to-use and gives you a pretty good overview of what's happening where.

                      R 2 Replies Last reply
                      0
                      • D DerekT P

                        I recently had some DNS issues, and my hosting provider suggested this whatsmydns.net[^] (which is possibly the most useful thing they've ever suggested :laugh: ) Easy-to-use and gives you a pretty good overview of what's happening where.

                        R Offline
                        R Offline
                        raddevus
                        wrote on last edited by
                        #22

                        very interesting. I will check it out. Thanks for posting. :thumbsup:

                        1 Reply Last reply
                        0
                        • R raddevus

                          So i'm switching to a new WebHost. I switched my DNS hosts to the new ones (in Google Domains) and waited. That worked fine after a wait and my new ip address came up. 65.x.x.x Hours later I'm working on my web site and something odd happens I see the old web site. I ping the site from the same machine where i saw it change to 65.x.x.x (new ip address). It is now pointing back to old one 205.x.x.x :confused: :wtf: No idea. I've flushed local cache etc. Still old one now. I went to my DigitalOcean site and pinged it got 205.x.x.x (OLD ONE!!!) Went to another computer on another network and pinged I get the new one 65.x.x.x. Wha?t!?? :confused: :wtf: :confused: :wtf: :confused: :wtf: :confused: Really exasperating. ## UPDATE ## Problem still occuring. I thought of something: Test on my phone (with wifi turned off -- using cellular data). 1. turned off wifi on my phone and hit newlibre.com -- saw my new web site. 2. turned wifi back on (on phone) and navigated to newlibre.com -- saw the old site. 3. obviously this is cached on my wifi router, right? 4. Imma haf to reboot my wifi router I guess. OY!!! ### UPDATE 2 #### I fired up a Win10 image via VirtualBox and ran ipconfig /flushdns All of a sudden I saw the new IP Address. VirtualBox win10 was running under this Linux machine I'm on. Finally saw the correct IP address here too. I guess it just propagated through, because I never did reboot the wifi router. I've finally crawled back out from under my desk. :rolleyes:

                          D Offline
                          D Offline
                          danbergen
                          wrote on last edited by
                          #23

                          Got 64…. With ping today 1/26/21 9:15amEST

                          DB

                          R 1 Reply Last reply
                          0
                          • D DerekT P

                            I recently had some DNS issues, and my hosting provider suggested this whatsmydns.net[^] (which is possibly the most useful thing they've ever suggested :laugh: ) Easy-to-use and gives you a pretty good overview of what's happening where.

                            R Offline
                            R Offline
                            raddevus
                            wrote on last edited by
                            #24

                            Wow, that is really cool!!! :thumbsup::thumbsup:

                            1 Reply Last reply
                            0
                            • D danbergen

                              Got 64…. With ping today 1/26/21 9:15amEST

                              DB

                              R Offline
                              R Offline
                              raddevus
                              wrote on last edited by
                              #25

                              Yep, it looks like it propagated through mine too. Thanks for letting me know. Also, another user posted this fantastic service that shows dns values from around the world. it is amazing. DNS Checker - DNS Propagation Check & DNS Lookup[^]

                              1 Reply Last reply
                              0
                              • R raddevus

                                Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

                                T Offline
                                T Offline
                                TNCaver
                                wrote on last edited by
                                #26

                                I get the new address at 64.209.142.205.

                                If you think 'goto' is evil, try writing an Assembly program without JMP.

                                R 1 Reply Last reply
                                0
                                • R raddevus

                                  So i'm switching to a new WebHost. I switched my DNS hosts to the new ones (in Google Domains) and waited. That worked fine after a wait and my new ip address came up. 65.x.x.x Hours later I'm working on my web site and something odd happens I see the old web site. I ping the site from the same machine where i saw it change to 65.x.x.x (new ip address). It is now pointing back to old one 205.x.x.x :confused: :wtf: No idea. I've flushed local cache etc. Still old one now. I went to my DigitalOcean site and pinged it got 205.x.x.x (OLD ONE!!!) Went to another computer on another network and pinged I get the new one 65.x.x.x. Wha?t!?? :confused: :wtf: :confused: :wtf: :confused: :wtf: :confused: Really exasperating. ## UPDATE ## Problem still occuring. I thought of something: Test on my phone (with wifi turned off -- using cellular data). 1. turned off wifi on my phone and hit newlibre.com -- saw my new web site. 2. turned wifi back on (on phone) and navigated to newlibre.com -- saw the old site. 3. obviously this is cached on my wifi router, right? 4. Imma haf to reboot my wifi router I guess. OY!!! ### UPDATE 2 #### I fired up a Win10 image via VirtualBox and ran ipconfig /flushdns All of a sudden I saw the new IP Address. VirtualBox win10 was running under this Linux machine I'm on. Finally saw the correct IP address here too. I guess it just propagated through, because I never did reboot the wifi router. I've finally crawled back out from under my desk. :rolleyes:

                                  K Offline
                                  K Offline
                                  Kirk 10389821
                                  wrote on last edited by
                                  #27

                                  Always check your DNS configuration. Also, on that machine, do nslookup host 8.8.8.8 -- A fixed name server (like one getting it correct) nslookup host -- use your default name server Doing this, you can slowly trace through every device to find it. FWIW, we have had serious delays in CABLE MODEM Country where they can take 5-7 days for some clients. And we have now started WEEKS in advance, lowering the TTL (cache time). And then making the change Friday night. 98% is all good by Sunday. But those cable companies. Anyways, this will eventually let you see who is getting it wrong. And always check the hosts files (but you know that) Finally, it sounds like you know to double check the ordering of your dns.

                                  R 1 Reply Last reply
                                  0
                                  • T TNCaver

                                    I get the new address at 64.209.142.205.

                                    If you think 'goto' is evil, try writing an Assembly program without JMP.

                                    R Offline
                                    R Offline
                                    raddevus
                                    wrote on last edited by
                                    #28

                                    Thanks very much. It looks like it did finally propagate through to me too. :thumbsup:

                                    1 Reply Last reply
                                    0
                                    • K Kirk 10389821

                                      Always check your DNS configuration. Also, on that machine, do nslookup host 8.8.8.8 -- A fixed name server (like one getting it correct) nslookup host -- use your default name server Doing this, you can slowly trace through every device to find it. FWIW, we have had serious delays in CABLE MODEM Country where they can take 5-7 days for some clients. And we have now started WEEKS in advance, lowering the TTL (cache time). And then making the change Friday night. 98% is all good by Sunday. But those cable companies. Anyways, this will eventually let you see who is getting it wrong. And always check the hosts files (but you know that) Finally, it sounds like you know to double check the ordering of your dns.

                                      R Offline
                                      R Offline
                                      raddevus
                                      wrote on last edited by
                                      #29

                                      Great info. Thanks for taking your time to share. I appreciate it.:thumbsup:

                                      1 Reply Last reply
                                      0
                                      • R raddevus

                                        Yeah, I do believe that. The odd thing is that this computer had connected to the correct ip address earlier today. Now I cannot get it to get that ip address again. I've flushed dns multiple times, etc. It's crazy. and yet, my work network thinks it has the new IP address & I even ran ipconfig / flushdns there and it still has the new IP address. Let's see what people get: $ ping newlibre.com The old one is : 205.144.171.178 The new one is (note - I thought it was 65.x but is different): 64.209.142.205 Ping and reply if you don't mind. I'm just interested. Thanks

                                        L Offline
                                        L Offline
                                        Luschan
                                        wrote on last edited by
                                        #30

                                        I've got the new one (26.01.'22 21:10).

                                        1 Reply Last reply
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