NextDNS This is log of ping.nextdns.io:
■ anexia-han 6 ms (ultralow1)
greencloud-han 7 ms (ultralow2)
anexia-hkg 37 ms (anycast2)
vultr-sin 67 ms (anycast1)
smarthost-den 188 ms
anexia-den 210 ms
anexia-dal 211 ms
smarthost-den (IPv6) 212 ms
vultr-dal 227 ms
anexia-chi 235 ms
oplink-hou 249 ms
zepto-tyo (IPv6) 255 ms (anycast1)
anexia-atl 264 ms
zepto-mci 267 ms
smarthost-mci 284 ms
anexia-atl (IPv6) 298 ms
vultr-atl (IPv6) 302 ms
vultr-tyo (IPv6) 311 ms (anycast2)
anexia-dal (IPv6) 315 ms
zepto-mci (IPv6) 315 ms
vultr-atl 344 ms
anexia-den (IPv6) 351 ms
smarthost-mci (IPv6) 355 ms
anexia-chi (IPv6) 372 ms
vultr-dal (IPv6) 392 ms
dns1.nextdns.io (IPv6) error (ultralow1)
dns2.nextdns.io (IPv6) error (ultralow2)
*This is log of router.nextdns.io:
[{"hostname":"anexia-dal-1.edge.nextdns.io","ips":["188.172.251.1","2605:380:58:554::1"]},{"hostname":"vultr-dal-1.edge.nextdns.io","ips":["137.220.51.178","2001:19f0:6401:a6e:5400:2ff:fece:2c12"]},{"hostname":"oplink-hou-1.edge.nextdns.io","ips":["216.230.232.29"]},{"hostname":"smarthost-mci-1.edge.nextdns.io","ips":["185.240.84.237","2606:6680:27:1::2fa1:9182"]},{"hostname":"zepto-mci-1.edge.nextdns.io","ips":["170.39.225.135","2a0e:6901:301:a:5054:ff:fe14:4256"]},{"hostname":"anexia-den-1.edge.nextdns.io","ips":["162.220.222.155","2a00:11c0:21::53"]},{"hostname":"smarthost-den-1.edge.nextdns.io","ips":["193.7.200.123","2606:6680:6:1::852a:cba4"]},{"hostname":"anexia-atl-1.edge.nextdns.io","ips":["162.250.7.137","2605:380:57:613::5"]},{"hostname":"vultr-atl-1.edge.nextdns.io","ips":["45.32.219.28","2001:19f0:5401:1d93:5400:2ff:fece:25e9"]},{"hostname":"anexia-chi-1.edge.nextdns.io","ips":["162.250.6.163","2605:380:56:6::1"]}]
*This is log of test.nextdns.io:
{
"status": "ok",
"protocol": "DOH",
"profile": "fp06b11e0e9f938d6e",
"client": "113.190.52.48",
"srcIP": "113.190.52.48",
"destIP": "203.162.172.59",
"anycast": false,
"server": "anexia-han-1",
"clientName": "unknown-doh",
"deviceName": "Duc-S20 FE",
"deviceID": "20MQ0"
}
*The thing is even if I use 4G mobile network or my fiber line at home, the symptom always happens, especially Facebook app. I check logs in my.nextdns.io and no privacy list blocks Facebook.
I doubt one feature "Anonymized EDNS Client Subnet" slowing DNS resolver.
