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Public DNS Service Comparisons - www.amazon.com

This document is a companion to the article 1.1.1.1: Fast, but not so accurate (yet).

"A" response records for Amazon, and network connectivity and latency to the answers, from Comcast in Memphis, TN. Tests conducted 2018-04-04.

Note: Traceroutes into Amazon-operated networks, including CloudFront, have a tendency to be obfuscated due to network topology and ICMP policy.

Querying the A record for www.amazon.com, 1.1.1.1 gives a mediocre answer. The most optimal results were returned by Google, Comcast, and Level3, pointing to servers in Dallas.

1.1.1.1

1.1.1.1 resolved www.amazon.com to 52.85.142.82 (server-52-85-142-82.iad12.r.cloudfront.net) in northern Virginia, 18 hops, ping average 46.8 ms.

[parse@word ~]$ dig +short A www.amazon.com @1.1.1.1
52.85.142.82

[parse@word ~]$ mtr -c 100 52.85.142.82

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    0.9   1.6   0.8  23.0   2.9
 2. 96.120.15.nnn                      0.0%   100    9.6  13.5   9.2  38.5   5.6
 3. 68.85.55.249                       0.0%   100   11.2  12.1   9.6  28.6   3.3
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   10.9  14.4  10.8  47.2   6.5
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   31.9  24.0  20.5  79.7   6.3
 6. be-12441-pe01.1950stemmons.tx.ibo  0.0%   100   23.4  23.3  19.6  41.9   4.7
 7. 23.30.207.150                      0.0%   100   21.5  22.7  19.6  41.5   3.9
 8. 54.239.105.109                     0.0%   100   50.4  57.1  43.7 102.5   9.0
 9. ???
10. ???
11. ???
12. 54.239.104.151                     0.0%   100   45.3  47.8  43.8  71.8   5.5
13. ???
14. 205.251.245.59                     0.0%   100   46.7  48.0  43.9  77.8   6.4
15. ???
16. ???
17. ???
18. server-52-85-142-82.iad12.r.cloud  0.0%   100   45.1  46.8  43.4  68.7   5.2

4.2.2.4

4.2.2.4 resolved www.amazon.com to 184.29.151.228 (a184-29-151-228.deploy.static.akamaitechnologies.com) in Dallas, 8 hops, ping average 21.5 ms.

[parse@word ~]$ dig +short A youtube.com @4.2.2.4
184.29.151.228

[parse@word ~]$ mtr -c 100 184.29.151.228

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.1   1.6   0.8  30.2   3.0
 2. 96.120.15.nnn                      0.0%   100   10.5  13.1   9.8  37.5   5.2
 3. 68.85.55.249                       0.0%   100   10.9  12.3   9.7  34.9   4.2
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   12.3  13.3  10.9  40.6   3.4
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   25.0  23.5  20.1  52.5   4.2
 6. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   31.7  22.3  20.0  44.4   3.4
 7. 173.167.58.218                     0.0%   100   20.8  23.3  19.2  55.4   5.3
 8. a184-29-151-228.deploy.static.aka  0.0%   100   20.5  21.5  19.0  42.2   3.4

8.8.8.8

8.8.8.8 resolved www.amazon.com to 54.192.5.179 (server-54-192-5-179.dfw3.r.cloudfront.net) in Dallas, 15 hops, ping average 21.5 ms.

[parse@word ~]$ dig +short A www.amazon.com @8.8.8.8
54.192.5.179

[parse@word ~]$ mtr -c 100 54.192.5.179

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.0   1.7   0.8  28.6   3.3
 2. 96.120.15.nnn                      0.0%   100   10.3  12.2   9.6  35.5   3.7
 3. Te5-1-ur01.bartlett.tn.malt.comca  0.0%   100   11.9  12.1   9.1  25.3   3.1
 4. 68.86.242.157                      0.0%   100   29.9  12.3   9.7  39.8   4.4
 5. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   14.0  14.0  10.5  42.0   4.8
 6. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   22.1  24.3  21.0  57.2   5.9
 7. be-12441-pe01.1950stemmons.tx.ibo  0.0%   100   22.1  23.5  19.8  86.0   7.8
 8. 23.30.207.150                      0.0%   100   22.1  24.8  19.8  56.2   7.2
 9. 54.239.105.97                      0.0%   100   37.5  33.7  21.6  83.7   8.9
10. ???
11. 54.240.217.51                      0.0%   100   21.9  22.3  19.5  51.4   4.4
12. ???
13. ???
14. ???
15. server-54-192-5-179.dfw3.r.cloudf  0.0%   100   21.1  21.5  18.8  39.5   3.0

9.9.9.9

9.9.9.9 resolved youtube.com to 52.84.87.216 (server-52-84-87-216.yul62.r.cloudfront.net) in Montreal, Quebec, Canada, 23 hops, ping average 60.8 ms.

[parse@word ~]$ dig +short A www.amazon.com @9.9.9.9
52.84.87.216

[parse@word ~]$ mtr -c 100 52.84.87.216

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   2.3   0.9  29.2   5.0
 2. 96.120.15.nnn                      0.0%   100   20.3  12.6   9.1  34.9   4.7
 3. Te4-2-ur01.bartlett.tn.malt.comca  0.0%   100   10.0  12.3   9.5  37.8   3.9
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   13.3  13.8  10.8  37.5   4.1
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   22.1  24.0  20.7  39.6   3.8
 6. be-12441-pe01.1950stemmons.tx.ibo  0.0%   100   22.3  22.8  18.8  63.0   5.7
 7. dls-b21-link.telia.net             0.0%   100   22.3  23.5  20.0  41.4   4.3
 8. atl-b22-link.telia.net             0.0%   100   35.4  36.1  30.2  58.0   7.2
 9. ash-bb4-link.telia.net             0.0%   100   58.0  49.6  46.1  86.0   6.1
10. nyk-bb4-link.telia.net             0.0%   100   52.8  54.0  51.3  71.3   3.2
11. nyk-b5-link.telia.net              0.0%   100   52.4  55.0  51.4  81.3   5.8
12. 80.239.132.214                     0.0%   100   53.5  54.3  51.4  76.8   3.9
13. ???
14. ???
15. ???
16. ???
17. 52.94.82.216                       0.0%   100   65.9  67.2  59.7 103.6   7.0
18. 52.94.82.211                       0.0%   100   59.9  62.0  58.4  93.3   6.1
19. ???
20. ???
21. ???
22. ???
23. server-52-84-87-216.yul62.r.cloud  0.0%   100   59.0  60.8  57.9  82.9   4.4

75.75.75.75

75.75.75.75 (Comcast's DNS) resolved www.amazon.com to 13.32.171.225 (dfw28s02-in-f14.1e100.net) in Dallas, 14 hops, ping average 22.7 ms.

[parse@word ~]$ dig +short A www.amazon.com @75.75.75.75
13.32.171.225

[parse@word ~]$ mtr -c 100 13.32.171.225

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   1.9   0.8  29.5   3.8
 2. 96.120.15.nnn                      0.0%   100   22.9  12.9   9.5  33.5   4.7
 3. Te4-2-ur01.bartlett.tn.malt.comca  0.0%   100   14.3  12.8   9.4  38.8   5.4
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   20.5  14.3  10.9  47.1   5.2
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   24.4  24.5  20.5  62.5   6.2
 6. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   22.6  22.0  19.6  37.3   2.7
 7. 50.248.118.202                     0.0%   100   20.6  22.4  19.5  36.9   3.1
 8. 54.239.105.113                     0.0%   100   78.4  33.9  21.2  78.4   8.2
 9. ???
10. ???
11. ???
12. ???
13. ???
14. server-13-32-171-225.dfw54.r.clou  0.0%   100   20.6  22.7  19.7  47.1   4.7

Summary

DNS server   | Answer RR        | City             | Avg Latency
-------------|------------------|------------------|------------
1.1.1.1      | 52.85.142.82     | Dulles, VA       | 46.8 ms
4.2.2.4      | 184.29.151.228   | Dallas, TX       | 21.5 ms
8.8.8.8      | 54.192.5.179     | Dallas, TX       | 21.5 ms
9.9.9.9      | 52.84.87.216     | Montreal, QC     | 60.8 ms
75.75.75.75  | 13.32.171.225    | Dallas, TX       | 22.7 ms

Best results: 4.2.2.4, 8.8.8.8, 75.75.75.75

Worst results: 9.9.9.9

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