Anyone else seeing this? Or is it common knowledge I just tripped over? Was just looking into a DNS issue for a customer and noticed Google's DNS was reporting cache times of 9700+ seconds, despite the zone TTL being 3600 seconds.
First, an authoritative server, then Google's answers. Yes, I know Google's answer is different from mine, thus the discovery of the different cache time. --Chris CLB-MBP:~ clb$ dig @ns1 www.ionadas.com ; <<>> DiG 9.7.3-P3 <<>> @ns1 www.ionadas.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16220 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;www.ionadas.com. IN A ;; ANSWER SECTION: www.ionadas.com. 3600 IN A 208.81.246.11 ================================================ CLB-MBP:~ clb$ dig @8.8.8.8 www.ionadas.com ; <<>> DiG 9.7.3-P3 <<>> @8.8.8.8 www.ionadas.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37844 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.ionadas.com. IN A ;; ANSWER SECTION: www.ionadas.com. 9759 IN CNAME ionadas.com. ionadas.com. 9759 IN A 208.81.246.21 ===================================================== CLB-MBP:~ clb$ dig @8.8.4.4 www.ionadas.com ; <<>> DiG 9.7.3-P3 <<>> @8.8.4.4 www.ionadas.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42188 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.ionadas.com. IN A ;; ANSWER SECTION: www.ionadas.com. 9710 IN CNAME ionadas.com. ionadas.com. 9710 IN A 208.81.246.21 _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
