最近发现 DNSPod 的公共 DNS 解析国外的域名很慢

比如 Xbox 下载游戏的域名：

; <<>> DiG 9.11.3-1ubuntu1.18-Ubuntu <<>> assets1.xboxlive.com @119.29.29.29
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6559
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 3bcafe6ea68d15d2 (echoed)
;; QUESTION SECTION:
;assets1.xboxlive.com.          IN      A

;; ANSWER SECTION:
assets1.xboxlive.com.   3600    IN      CNAME   xbx-fg1-shim.trafficmanager.net.
xbx-fg1-shim.trafficmanager.net. 300 IN CNAME   xboxassets.s.llnwi.net.
xboxassets.s.llnwi.net. 60      IN      A       111.119.27.128

;; Query time: 502 msec
;; SERVER: 119.29.29.29#53(119.29.29.29)
;; WHEN: Wed Sep 13 14:45:54 CST 2023
;; MSG SIZE  rcvd: 155

Xbox 的这个影响不大，因为可以通过修改其他域名加入 IPSet ，让 Xbox 访问 .cn 域名。但是下载应用和更新的时候会有影响，需要访问 dlassets.xboxlive.com 。

NS 下载域名：

; <<>> DiG 9.11.3-1ubuntu1.18-Ubuntu <<>> atum.hac.lp1.d4c.nintendo.net @119.29.29.29
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48930
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 44b99537569de189 (echoed)
;; QUESTION SECTION:
;atum.hac.lp1.d4c.nintendo.net. IN      A

;; ANSWER SECTION:
atum.hac.lp1.d4c.nintendo.net. 60 IN    CNAME   atum.hac.lp1.d4c.nintendo.net.edgesuite.net.
atum.hac.lp1.d4c.nintendo.net.edgesuite.net. 21600 IN CNAME a1822.d.akamai.net.
a1822.d.akamai.net.     60      IN      A       23.15.14.16
a1822.d.akamai.net.     60      IN      A       23.15.14.9

;; Query time: 386 msec
;; SERVER: 119.29.29.29#53(119.29.29.29)
;; WHEN: Wed Sep 13 14:52:06 CST 2023
;; MSG SIZE  rcvd: 185

再比如 cloudflare：

; <<>> DiG 9.11.3-1ubuntu1.18-Ubuntu <<>> cloudflare.com @119.29.29.29
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51713
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: ce158a3842a28813 (echoed)
;; QUESTION SECTION:
;cloudflare.com.                        IN      A

;; ANSWER SECTION:
cloudflare.com.         300     IN      A       104.16.133.229
cloudflare.com.         300     IN      A       104.16.132.229

;; Query time: 311 msec
;; SERVER: 119.29.29.29#53(119.29.29.29)
;; WHEN: Wed Sep 13 14:47:59 CST 2023
;; MSG SIZE  rcvd: 87

但是大家常用的域名，好像就很快，比如时钟域名：

; <<>> DiG 9.11.3-1ubuntu1.18-Ubuntu <<>> time.windows.com @119.29.29.29
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48785
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 08c09d00c9c721ab (echoed)
;; QUESTION SECTION:
;time.windows.com.              IN      A

;; ANSWER SECTION:
time.windows.com.       3112    IN      CNAME   twc.trafficmanager.net.
twc.trafficmanager.net. 112     IN      A       52.231.114.183

;; Query time: 10 msec
;; SERVER: 119.29.29.29#53(119.29.29.29)
;; WHEN: Wed Sep 13 14:48:54 CST 2023
;; MSG SIZE  rcvd: 109

感觉像是招了个新手把配置改坏了。