There is something strange going on with the TTL of my domain across nameservers on the internet.
This is how its configured on ns1.stokkie.net and ns2.stokkie.net : $ dig +norecurse +ttlid stokkie.net @84.87.53.162 ; <<>> DiG 9.8.1 <<>> +norecurse +ttlid stokkie.net @84.87.53.162 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54209 ;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 86400 IN A 84.87.53.162 ;; AUTHORITY SECTION: stokkie.net. 86400 IN NS ns2.stokkie.net. stokkie.net. 86400 IN NS ns1.stokkie.net. ;; ADDITIONAL SECTION: ns1.stokkie.net. 86400 IN A 84.87.53.162 ns2.stokkie.net. 86400 IN A 92.67.169.193 ;; Query time: 2 msec ;; SERVER: 84.87.53.162#53(84.87.53.162) ;; WHEN: Sun Sep 25 07:40:40 2022 ;; MSG SIZE rcvd: 113 $ $ dig +norecurse +ttlid stokkie.net @92.67.169.193 ; <<>> DiG 9.8.1 <<>> +norecurse +ttlid stokkie.net @92.67.169.193 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15700 ;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 86400 IN A 84.87.53.162 ;; AUTHORITY SECTION: stokkie.net. 86400 IN NS ns1.stokkie.net. stokkie.net. 86400 IN NS ns2.stokkie.net. ;; ADDITIONAL SECTION: ns1.stokkie.net. 86400 IN A 84.87.53.162 ns2.stokkie.net. 86400 IN A 92.67.169.193 ;; Query time: 13 msec ;; SERVER: 92.67.169.193#53(92.67.169.193) ;; WHEN: Sun Sep 25 07:41:33 2022 ;; MSG SIZE rcvd: 113 $ Here the nameserver of my ADSL ISP, resolver1.kpn.net : $ dig +ttlid stokkie.net @194.151.228.18 ; <<>> DiG 9.8.1 <<>> +ttlid stokkie.net @194.151.228.18 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47231 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 79291 IN A 84.87.53.162 ;; Query time: 8 msec ;; SERVER: 194.151.228.18#53(194.151.228.18) ;; WHEN: Sun Sep 25 07:43:40 2022 ;; MSG SIZE rcvd: 45 $ Here the nameserver of my ADSL ISP, resolver2.kpn.net : $ dig +ttlid stokkie.net @194.151.228.34 ; <<>> DiG 9.8.1 <<>> +ttlid stokkie.net @194.151.228.34 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55404 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 86400 IN A 84.87.53.162 ;; Query time: 28 msec ;; SERVER: 194.151.228.34#53(194.151.228.34) ;; WHEN: Sun Sep 25 07:44:22 2022 ;; MSG SIZE rcvd: 45 $ Here the public DNS server of Google : $ dig +ttlid stokkie.net @8.8.8.8 ; <<>> DiG 9.8.1 <<>> +ttlid stokkie.net @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29668 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 21599 IN A 84.87.53.162 ;; Query time: 2033 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Sun Sep 25 07:46:03 2022 ;; MSG SIZE rcvd: 45 $ Here's the second time Google : $ dig +ttlid stokkie.net @8.8.8.8 ; <<>> DiG 9.8.1 <<>> +ttlid stokkie.net @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3080 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;stokkie.net. IN A ;; ANSWER SECTION: stokkie.net. 21600 IN A 84.87.53.162 ;; Query time: 23 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Sun Sep 25 07:46:18 2022 ;; MSG SIZE rcvd: 45 $ Is this proper behavior ? -- Robert M. Stockmann - RHCE Network Engineer - UNIX/Linux Specialist crashrecovery.org st...@stokkie.net -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users