为什么无法从大陆 DNS 获取到 swcdn.apple.com 大陆地区的 CDN 地址？
dn1095239 · 2021-10-27 17:51:19 +08:00 · 3328 次点击这是一个创建于 1115 天前的主题，其中的信息可能已经有所发展或是发生改变。
请教一下，我在本机上查询 swcdn.apple.com ，无论是国内还是国外的 DNS 都返回 akamai 的美国地址，导致下载速度奇慢：
$ nslookup swcdn.apple.com
Server: 223.5.5.5
Address: 223.5.5.5#53
Non-authoritative answer:
swcdn.apple.com canonical name = swcdn.apple.com.akadns.net.
swcdn.apple.com.akadns.net canonical name = swcdn.g.aaplimg.com.
swcdn.g.aaplimg.com canonical name = swcdn-na-lb.apple.com.akadns.net.
swcdn-na-lb.apple.com.akadns.net canonical name = swcdn.apple.com.edgesuite.net.
swcdn.apple.com.edgesuite.net canonical name = a1271.dscgi3.akamai.net.
Name: a1271.dscgi3.akamai.net
Address: 184.25.123.145
Name: a1271.dscgi3.akamai.net
Address: 184.25.123.152
$ nslookup swcdn.apple.com 114.114.114.114
Server: 114.114.114.114
Address: 114.114.114.114#53
Non-authoritative answer:
swcdn.apple.com canonical name = swcdn.apple.com.akadns.net.
swcdn.apple.com.akadns.net canonical name = swcdn.g.aaplimg.com.
swcdn.g.aaplimg.com canonical name = swcdn-na-lb.apple.com.akadns.net.
swcdn-na-lb.apple.com.akadns.net canonical name = swcdn.apple.com.edgesuite.net.
swcdn.apple.com.edgesuite.net canonical name = a1271.dscgi3.akamai.net.
Name: a1271.dscgi3.akamai.net
Address: 184.25.123.152
Name: a1271.dscgi3.akamai.net
Address: 184.25.123.145
但在路由器上同一个 DNS 又能获取到大陆 CDN：
root@z:~# nslookup swcdn.apple.com
Server: 223.5.5.5
Address: 223.5.5.5#53
Name: swcdn.apple.com
swcdn.apple.com canonical name = swcdn.apple.com.akadns.net
Name: swcdn.apple.com.akadns.net
swcdn.apple.com.akadns.net canonical name = swcdn-china-lb.dl-apple.com.akadns.net
Name: swcdn-china-lb.dl-apple.com.akadns.net
swcdn-china-lb.dl-apple.com.akadns.net canonical name = 8alnb0g00p9ast.mwcname.com
Name: 8alnb0g00p9ast.mwcname.com
Address 1: 111.124.71.242
Address 2: 49.79.232.34
Address 3: 124.232.174.197
Address 4: 111.124.71.206
Address 5: 111.124.71.244
Address 6: 124.232.174.199
Address 7: 180.101.30.53
Address 8: 61.147.211.205
Address 9: 124.232.174.198
Address 10: 113.125.197.95
Address 11: 124.232.174.14
Address 12: 124.232.174.196
Address 13: 183.134.27.20
swcdn.apple.com canonical name = swcdn.apple.com.akadns.net
swcdn.apple.com.akadns.net canonical name = swcdn-china-lb.dl-apple.com.akadns.net
swcdn-china-lb.dl-apple.com.akadns.net canonical name = swcdn.apple.com.w.alikunlun.com
请问下这是什么原因？
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wonderblank 2021-10-27 18:00:08 +08:00
dig trace 一下
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wonderblank 2021-10-27 18:00:35 +08:00
;; ANSWER SECTION:
swcdn.apple.com. 3578 IN CNAME 8alnb0g00p9ast.mwcname.com. 8alnb0g00p9ast.mwcname.com. 3578 IN A 36.156.208.240 64 bytes from 36.156.208.240: icmp_seq=0 ttl=51 time=13.051 ms 这是我解析出来的结果 |
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dn1095239 OP ```
$ dig @223.5.5.5 +trace swcdn.apple.com ; <<>> DiG 9.10.6 <<>> @223.5.5.5 +trace swcdn.apple.com ; (1 server found) ;; global options: +cmd . 59299 IN NS f.root-servers.net. . 59299 IN NS c.root-servers.net. . 59299 IN NS e.root-servers.net. . 59299 IN NS g.root-servers.net. . 59299 IN NS i.root-servers.net. . 59299 IN NS d.root-servers.net. . 59299 IN NS l.root-servers.net. . 59299 IN NS b.root-servers.net. . 59299 IN NS a.root-servers.net. . 59299 IN NS k.root-servers.net. . 59299 IN NS h.root-servers.net. . 59299 IN NS m.root-servers.net. . 59299 IN NS j.root-servers.net. . 59299 IN RRSIG NS 8 0 518400 20211108170000 20211026160000 14748 . fxvblquc0n0OVj6btUqmBH5KFX2Ez4PXT1B/2kO0nNr2F4CqbVJ1iOzB 9M0eEQGUvk/winR0O6qyq0vPpp/bDg9yEoWFnGAQK2gds98NCalUWpQz oSIwG587xwAApM5e3NpWI5HCHMSvYdF+8zKAMwyzPCssdtW4bafkb9jn D+c5co76GPI+y5/R2fF9Kl2Ll9Ka2mIt2JpW3myGhPMuYiApI7lTFGih diNZn6ssKR7rlCL6dSFHARII3fwFgBW/N6Qk4BgyMbcAdR3byhZY8IKb Fcm/QEoxkvHW3EAU2/bp3DQgWGmUekk8TYphpt5OcbU5TquB8WYBEeGY mu2eNg== ;; Received 525 bytes from 223.5.5.5#53(223.5.5.5) in 343 ms swcdn.apple.com. 14 IN CNAME swcdn.apple.com.akadns.net. swcdn.apple.com.akadns.net. 14 IN CNAME swcdn.g.aaplimg.com. swcdn.g.aaplimg.com. 14 IN CNAME swcdn-na-lb.apple.com.akadns.net. swcdn-na-lb.apple.com.akadns.net. 14 IN CNAME swcdn.apple.com.edgesuite.net. swcdn.apple.com.edgesuite.net. 14 IN CNAME a1271.dscgi3.akamai.net. a1271.dscgi3.akamai.net. 14 IN A 23.49.5.165 a1271.dscgi3.akamai.net. 14 IN A 23.49.5.170 ;; Received 246 bytes from 192.112.36.4#53(g.root-servers.net) in 196 ms ``` 也是返回 akamai 的 |
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lingaoyi 2021-10-27 18:51:31 +08:00
17.253.85.204
这个蛮快阿。 |
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datou 2021-10-27 21:11:08 +08:00
非权威应答:
名称: k128-swcdn.gslb.ksyuncdn.com Address: 27.19.253.1 Aliases: swcdn.apple.com swcdn.apple.com.akadns.net swcdn-china-lb.dl-apple.com.akadns.net swcdn.apple.com.download.ks-cdn.com ping 27.19.253.1 正在 Ping 27.19.253.1 具有 32 字节的数据: 来自 27.19.253.1 的回复: 字节=32 时间=7ms TTL=57 来自 27.19.253.1 的回复: 字节=32 时间=7ms TTL=57 来自 27.19.253.1 的回复: 字节=32 时间=8ms TTL=57 来自 27.19.253.1 的回复: 字节=32 时间=6ms TTL=57 |
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bclerdx 2021-10-27 22:10:24 +08:00
我的也解析到国内 IP 上。
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loukky 2021-10-28 01:05:50 +08:00
C:\Users\wangw>dig swcdn.apple.com
; <<>> DiG 9.17.9 <<>> swcdn.apple.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3767 ;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;swcdn.apple.com. IN A ;; ANSWER SECTION: swcdn.apple.com. 2521 IN CNAME swcdn.apple.com.akadns.net. swcdn.apple.com.akadns.net. 91 IN CNAME swcdn.g.aaplimg.com. swcdn.g.aaplimg.com. 1780 IN CNAME swcdn-china-lb.dl-apple.com.akadns.net. swcdn-china-lb.dl-apple.com.akadns.net. 134 IN CNAME swcdn.apple.com.w.alikunlun.com. swcdn.apple.com.w.alikunlun.com. 55 IN A 124.165.127.199 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.242 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.244 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.238 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.248 swcdn.apple.com.w.alikunlun.com. 55 IN A 124.165.127.206 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.243 swcdn.apple.com.w.alikunlun.com. 55 IN A 124.165.127.205 swcdn.apple.com.w.alikunlun.com. 55 IN A 124.165.127.200 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.240 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.241 swcdn.apple.com.w.alikunlun.com. 55 IN A 116.177.224.239 ;; Query time: 3 msec ;; SERVER: 192.168.11.1#53(192.168.11.1) (UDP) ;; WHEN: Thu Oct 28 01:04:02 ;; MSG SIZE rcvd: 406 虽然不是本地，但也是国内（这个是中科大返回的） 如果用自己搭建的 dns ，可以返回本地（因为设置了 edns ） |
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szpunk 2021-10-28 03:25:47 +08:00
nslookup swcdn.apple.com 223.5.5.5 | nali --gbk
非权威应答: 服务器: public1.alidns.com Address: 223.5.5.5 [浙江省杭州市 阿里巴巴阿里云 AliDNS 服务器] 名称: app.dl.ourdvs.com.cd23f.com Addresses: 111.45.23.239 [广东省广州市 电信 IDC 机房] 120.240.100.43 [广东省揭阳市 移动] 111.45.23.230 [广东省广州市 电信 IDC 机房] 183.240.117.137 [广东省江门市 移动] 111.45.23.227 [广东省广州市 电信 IDC 机房] 120.232.176.57 [广东省广州市 移动] 120.232.176.36 [广东省广州市 移动] 120.240.100.49 [广东省揭阳市 移动] 111.45.23.218 [广东省广州市 电信 IDC 机房] 111.45.23.209 [广东省广州市 电信 IDC 机房] 111.45.23.210 [广东省广州市 电信 IDC 机房] 183.240.117.134 [广东省江门市 移动] Aliases: swcdn.apple.com swcdn.apple.com.akadns.net [Akamai CDN] swcdn-china-lb.dl-apple.com.akadns.net [Akamai CDN] 8alnb0g00p9ast.mwcname.com [QUANTIL (网宿)] |
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haojunmei 2021-10-28 15:05:40 +08:00
服务器: public1.alidns.com
Address: 223.5.5.5 非权威应答: 名称: 8alnb0g00p9ast.mwcname.com Addresses: 124.232.174.19 124.232.174.18 111.124.71.241 122.225.57.75 49.71.73.143 180.101.30.33 116.211.79.10 111.124.71.206 42.243.147.17 49.71.73.142 124.232.174.17 61.164.119.91 113.142.25.165 Aliases: swcdn.apple.com swcdn.apple.com.akadns.net swcdn-china-lb.dl-apple.com.akadns.net |
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JensenQian 2021-10-28 16:37:54 +08:00
CNAME k128-swcdn.gslb.ksyuncdn.com 金山云
CNAME swcdn-china-lb.dl-apple.com.akadns.net Akamai CNAME swcdn.apple.com.akadns.net Akamai CNAME swcdn.apple.com.download.ks-cdn.com 金山云 |
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Marionic0723 2021-10-28 18:48:34 +08:00
C:\Windows\system32>nslookup swcdn.apple.com
服务器: UnKnown Address: 2408:8210:3076:3df0::1 非权威应答: 名称: swcdn.apple.com.w.alikunlun.com Addresses: 125.39.103.239 125.39.103.248 125.39.103.241 125.39.103.242 125.39.103.236 125.39.103.240 125.39.103.238 125.39.103.237 Aliases: swcdn.apple.com swcdn.apple.com.akadns.net swcdn-china-lb.dl-apple.com.akadns.net 天津联通默认 DNS 正常 |
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TomChaai 2021-10-28 23:56:45 +08:00
前几天有个人也是遇到 DNS 解析绕远路的问题，后来发现是自己反广告插件带了个国外 DNS 。
你自己排查下。 |
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jousca 2021-10-29 00:23:29 +08:00
目测是楼主自己电脑系统的问题。
四川移动 ping swcdn.apple.com 正在 Ping swcdn.apple.com.w.alikunlun.com [112.45.30.241] 具有 32 字节的数据 来自 112.45.30.241 的回复: 字节=32 时间=3ms TTL=56 来自 112.45.30.241 的回复: 字节=32 时间=3ms TTL=56 来自 112.45.30.241 的回复: 字节=32 时间=3ms TTL=56 来自 112.45.30.241 的回复: 字节=32 时间=3ms TTL=56 112.45.30.241 的 Ping 统计信息: 数据包: 已发送 = 4 ，已接收 = 4 ，丢失 = 0 (0% 丢失)， 往返行程的估计时间(以毫秒为单位): 最短 = 3ms ，最长 = 3ms ，平均 = 3ms |
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Kinnice 2021-10-29 11:20:56 +08:00
被你路由器上的某科技插件拦截并替换了 dns 请求
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szpunk 2023-02-11 02:21:07 +08:00
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