Today I changed my DNS and nameservers to Cloudflare. After that, pingdom gave some strange DNS errors. I searched the internet but couldn't find a solution. The errors are:
Could not find reverse address for 64.233.162.26 (26.162.233.64.in-addr.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could not find reverse address for 64.233.189.27 (27.189.233.64.in-addr.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could not find reverse address for 2404:6800:4008:c07:0:0:0:1b (b.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.0.c.0.8.0.0.4.0.0.8.6.4.0.4.2.ip6.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could not find reverse address for 64.233.189.26 (26.189.233.64.in-addr.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could not find reverse address for 2404:6800:4008:c07:0:0:0:1b (b.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.0.c.0.8.0.0.4.0.0.8.6.4.0.4.2.ip6.arpa.).
PTR record(s) for the address could not be found in the .arpa-zone. (ip6.arpa. for IPv6 addresses and in-addr.arpa. for IPv4).
Could someone help please?
Thank you!