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Public DNS Service Comparisons - youtube.com

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

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

Querying the A record for youtube.com, 1.1.1.1 gives the poorest answer: inexplicably, a server in Bogota, Colombia, South America. The most optimal results were returned by Comcast and Level3, which both gave the same IP for a server in Dallas.

1.1.1.1

1.1.1.1 resolved youtube.com to 216.58.222.238 (bog02s06-in-f14.1e100.net) in Bogota, Colombia (!), 18 hops, ping average 86.6 ms.

[parse@word ~]$ dig +short A youtube.com @1.1.1.1
216.58.222.238

[parse@word ~]$ mtr -c 100 216.58.222.238

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100   13.2   1.5   0.8  25.3   2.7
 2. 96.120.15.nnn                      0.0%   100   11.6  11.8   9.4  38.7   3.6
 3. 68.85.55.249                       0.0%   100   25.4  12.3   9.3  37.3   3.8
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   12.7  13.3  10.9  24.8   2.3
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   24.1  23.4  20.3  34.3   2.5
 6. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   21.2  23.3  20.0  51.4   5.3
 7. 66.208.228.66                      0.0%   100   20.9  22.6  19.9  38.9   3.2
 8. 108.170.252.162                    0.0%   100   20.3  23.8  19.9  63.7   6.0
 9. 108.170.228.91                     0.0%   100   22.3  22.7  19.8  46.9   3.8
10. 209.85.249.139                     0.0%   100   43.5  45.5  41.9  73.3   4.8
11. 108.170.231.78                     0.0%   100   43.0  44.6  42.3  63.8   2.7
12. 108.170.231.79                     0.0%   100   44.9  45.6  42.8  68.9   4.4
13. 108.170.231.85                     0.0%   100   44.3  48.1  42.7 103.6   9.5
14. 74.125.37.174                      0.0%   100   68.9  71.1  67.4  95.7   4.8
15. 64.233.175.234                     1.0%   100   86.6  87.8  85.3 116.2   3.6
16. 108.170.253.193                    1.0%   100   87.0  87.6  85.0 106.6   3.6
17. 216.239.54.133                     0.0%   100   85.7  85.7  83.2 102.2   3.3
18. bog02s06-in-f14.1e100.net          0.0%   100   85.2  86.6  83.9 107.9   3.8

4.2.2.4

4.2.2.4 resolved youtube.com to 172.217.9.14 (dfw28s02-in-f14.1e100.net) in Dallas, 11 hops, ping average 21.4 ms. The same result was returned by Comcast's DNS.

[parse@word ~]$ dig +short A youtube.com @4.2.2.4
172.217.9.14

[parse@word ~]$ mtr -c 100 172.217.9.14

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   1.7   0.8  29.9   3.3
 2. 96.120.15.nnn                      0.0%   100   11.3  12.0   9.6  35.1   3.8
 3. Te5-1-ur01.bartlett.tn.malt.comca  0.0%   100   10.2  12.8   9.6  47.7   5.5
 4. 68.86.242.157                      0.0%   100   12.1  12.1   9.4  40.1   3.7
 5. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   11.8  13.7  10.7  36.1   4.0
 6. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   20.7  23.6  20.4  42.8   3.6
 7. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   21.6  23.5  19.9  49.9   5.7
 8. 66.208.228.66                      0.0%   100   22.6  23.1  19.5  57.8   5.2
 9. ???
10. 108.170.231.69                     0.0%   100   21.7  22.4  19.4  41.5   3.8
11. dfw28s02-in-f14.1e100.net          0.0%   100   19.6  21.4  19.1  40.9   3.5

8.8.8.8

8.8.8.8 resolved youtube.com to 172.217.6.174 (dfw25s17-in-f174.1e100.net) in Dallas, 12 hops, ping average 21.5 ms.

[parse@word ~]$ dig +short A youtube.com @8.8.8.8
172.217.6.174

[parse@word ~]$ mtr -c 100 172.217.6.174

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   2.1   0.9  26.5   3.7
 2. 96.120.15.nnn                      0.0%   100   10.3  11.9   9.6  25.3   2.7
 3. Te5-4-ur01.bartlett.tn.malt.comca  0.0%   100   11.7  12.6   9.4  34.8   4.3
 4. 68.86.242.157                      0.0%   100   11.3  11.8   9.4  33.9   3.5
 5. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   12.5  13.9  10.8  34.2   4.0
 6. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   22.3  24.6  20.5  44.6   4.4
 7. be-12441-pe01.1950stemmons.tx.ibo  0.0%   100   20.6  22.5  20.1  45.8   3.8
 8. 75.149.231.222                     0.0%   100   20.4  22.7  19.9  48.4   4.5
 9. ???
10. 209.85.242.54                      0.0%   100   22.3  22.3  19.4  49.4   4.2
11. 216.239.35.161                     0.0%   100   40.3  22.1  19.9  40.3   3.0
12. dfw25s17-in-f174.1e100.net         0.0%   100   20.5  21.5  18.6  46.0   4.4

9.9.9.9

9.9.9.9 resolved youtube.com to 172.217.0.142 (atl14s77-in-f14.1e100.net) in Atlanta, 14 hops, ping average 32.4 ms.

[parse@word ~]$ dig +short A youtube.com @9.9.9.9
172.217.0.142

[parse@word ~]$ mtr -c 100 172.217.0.142

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    0.9   2.0   0.8  26.1   4.1
 2. 96.120.15.nnn                      0.0%   100   10.5  12.3   9.3  37.0   4.9
 3. 68.85.55.249                       0.0%   100   10.8  11.9   9.4  30.0   3.0
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   13.4  13.9  10.9  39.2   4.6
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   23.2  23.7  20.4  47.9   3.9
 6. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   21.2  22.5  19.4  48.5   4.1
 7. 66.208.228.66                      0.0%   100   19.8  23.3  19.8  58.4   6.4
 8. 108.170.240.209                    0.0%   100   21.5  23.4  19.7  74.3   5.9
 9. 108.170.228.84                     0.0%   100   24.5  23.2  20.2  44.3   4.2
10. 209.85.249.50                      0.0%   100   40.5  33.7  30.9  62.2   4.7
11. 209.85.250.69                      0.0%   100   31.7  33.2  30.4  63.1   3.8
12. 108.170.249.161                    0.0%   100   32.9  32.8  30.1  45.2   2.4
13. 108.170.225.127                    0.0%   100   31.7  33.4  30.1  57.8   4.1
14. atl14s77-in-f14.1e100.net          0.0%   100   30.8  32.4  29.3  58.3   4.5

75.75.75.75

75.75.75.75 (Comcast's DNS) resolved youtube.com to 172.217.9.14 (dfw28s02-in-f14.1e100.net) in Dallas, 11 hops, ping average 20.9 ms. The same result was returned by Level3's DNS.

[parse@word ~]$ dig +short A youtube.com @75.75.75.75
172.217.9.14

[parse@word ~]$ mtr -c 100 172.217.9.14

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   1.6   0.8  27.1   2.7
 2. 96.120.15.nnn                      0.0%   100   10.1  13.0   9.6  35.7   6.0
 3. Te5-1-ur01.bartlett.tn.malt.comca  0.0%   100   11.7  12.0   9.6  33.6   3.3
 4. 68.86.242.157                      0.0%   100   10.9  12.0   9.4  38.8   3.7
 5. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   22.7  13.1  11.0  42.3   3.3
 6. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   23.8  23.6  20.9  40.9   3.3
 7. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   21.7  22.4  20.2  46.2   4.0
 8. 66.208.228.66                      0.0%   100   22.0  22.4  19.7  42.9   4.0
 9. ???
10. 108.170.231.69                     0.0%   100   22.4  22.6  19.7  46.0   4.4
11. dfw28s02-in-f14.1e100.net          0.0%   100   22.8  20.9  19.0  40.0   2.5

Summary

DNS server   | Answer RR        | City             | Avg Latency
-------------|------------------|------------------|------------
1.1.1.1      | 216.58.222.238   | Bogota, Colombia | 86.6 ms
4.2.2.4      | 172.217.9.14     | Dallas, TX       | 21.4 ms
8.8.8.8      | 172.217.6.174    | Dallas, TX       | 21.5 ms
9.9.9.9      | 172.217.0.142    | Atlanta, GA      | 32.4 ms
75.75.75.75  | 172.217.9.14     | Dallas, TX       | 20.9 ms

Best results: 75.75.75.75, 4.2.2.4, 8.8.8.8

Worst results: 1.1.1.1

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