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Public DNS Service Comparisons - google.com

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

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

Querying the A record for google.com, 1.1.1.1 gives the poorest answer, a server more than twice as distant as those returned by other resolvers. The most optimal results were returned by Comcast and Level3.

1.1.1.1

1.1.1.1 resolved google.com to 172.217.12.174 (lga25s62-in-f14.1e100.net) in New York, 17 hops, ping average 50.8 ms.

[parse@word ~]$ dig +short A google.com @1.1.1.1
172.217.12.174

[parse@word ~]$ mtr -c 100 172.217.12.174

 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan          0.0%   100    0.9   1.4   0.8  15.4   1.8
 2. 96.120.15.nnn                     0.0%   100    9.7  12.5   9.7  31.9   3.9
 3. Te5-1-ur01.bartlett.tn.malt.comc  0.0%   100   10.4  12.0   9.8  22.4   2.5
 4. 68.86.242.157                     0.0%   100   10.6  12.7   9.9  33.4   3.7
 5. be-92-ar02.dannythomas.tn.malt.c  0.0%   100   12.4  12.7  10.8  23.1   1.8
 6. be-22258-cr02.dallas.tx.ibone.co  0.0%   100   23.2  23.5  20.2  42.3   3.0
 7. be-12495-pe03.1950stemmons.tx.ib  0.0%   100   33.4  23.4  20.0  68.2   7.0
 8. 66.208.228.66                     0.0%   100   22.4  22.7  19.6  47.8   4.3
 9. 108.170.240.209                   0.0%   100   24.5  22.8  19.7  43.8   3.7
10. 108.170.228.81                    0.0%   100   21.9  24.2  20.0  62.2   7.6
11. 209.85.250.47                     0.0%   100   28.0  28.6  26.0  44.9   3.2
12. 209.85.249.18                     0.0%   100   45.4  44.3  40.5  75.6   6.0
13. 216.239.58.255                    0.0%   100   51.7  52.4  49.2  79.3   5.1
14. 108.170.227.150                   0.0%   100   49.2  51.3  48.6  71.2   3.8
15. ???
16. 108.170.226.201                   0.0%   100   50.0  51.3  48.9  62.5   3.3
17. lga25s62-in-f14.1e100.net         0.0%   100   49.8  50.8  46.7  78.9   5.2

4.2.2.4

4.2.2.4 resolved google.com to 216.58.194.110 (dfw06s48-in-f14.1e100.net) in Dallas, 15 hops with visible load balancing, ping average 21.5 ms.

[parse@word ~]$ dig +short A google.com @4.2.2.4
216.58.194.110

[parse@word ~]$ mtr -c 100 216.58.194.110

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   1.9   0.7  27.8   3.2
 2. 96.120.15.nnn                      0.0%   100   10.4  11.7   9.1  35.5   3.1
 3. 68.85.55.249                       0.0%   100    9.8  12.6   9.1  40.0   5.5
 4. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   12.4  13.5  10.8  29.3   3.8
 5. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   23.1  23.8  20.0  50.6   4.4
 6. be-12441-pe01.1950stemmons.tx.ibo  0.0%   100   21.9  23.0  19.9  45.9   4.4
 7. 75.149.231.222                     0.0%   100   21.8  21.9  19.9  39.6   2.7
 8. ???
 9. 209.85.242.180                     0.0%   100   48.0  26.6  19.7  77.7   9.5
    209.85.242.182
10. 108.170.240.209                    0.0%   100   20.9  22.5  20.2  35.5   2.9
    108.170.240.146
11. 108.170.228.81                     0.0%   100   21.3  23.1  20.3  45.5   4.4
    216.239.59.168
12. 108.170.228.90                     0.0%   100   21.1  24.1  19.7  51.7   6.1
    216.239.63.206
13. 108.170.252.129                    0.0%   100   20.9  22.4  19.6  50.9   4.1
14. 108.170.230.113                    0.0%   100   22.5  23.3  19.9  52.0   5.0
15. dfw06s48-in-f110.1e100.net         0.0%   100   21.3  21.5  19.0  38.1   2.9

8.8.8.8

8.8.8.8 resolved google.com to 172.217.6.174 (dfw25s17-in-f174.1e100.net) in Dallas, 12 hops, ping average 21.6 ms.

[parse@word ~]$ dig +short A google.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    3.5   1.5   0.8  26.2   2.5
 2. 96.120.15.nnn                     0.0%   100   11.2  12.3   9.7  41.5   4.5
 3. Te5-4-ur01.bartlett.tn.malt.comc  0.0%   100   10.5  12.7   9.7  40.7   4.7
 4. 68.86.242.157                     0.0%   100   10.8  12.4   9.2  31.2   3.9
 5. be-92-ar02.dannythomas.tn.malt.c  0.0%   100   13.4  13.6  10.7  41.3   4.7
 6. be-22258-cr02.dallas.tx.ibone.co  0.0%   100   24.4  24.0  20.5  51.2   5.0
 7. be-12441-pe01.1950stemmons.tx.ib  0.0%   100   22.8  22.4  19.6  44.0   3.7
 8. 75.149.231.222                    0.0%   100   19.8  22.9  19.7  47.5   4.9
 9. ???
10. 209.85.242.54                     0.0%   100   20.8  22.3  19.8  47.0   3.9
11. 216.239.35.161                    1.0%   100   22.2  21.7  19.7  33.1   1.5
12. dfw25s17-in-f14.1e100.net         0.0%   100   21.3  21.6  18.9  50.0   4.6

9.9.9.9

9.9.9.9 resolved google.com to 172.217.164.46 (atl14s91-in-f14.1e100.net) in Atlanta, 15 hops, ping average 31.8 ms.

[parse@word ~]$ dig +short A google.com @9.9.9.9
172.217.164.46

[parse@word ~]$ mtr -c 100 172.217.164.46

 Host                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan           0.0%   100    1.2   1.6   0.9  16.6   2.2
 2. 96.120.15.nnn                      0.0%   100   11.5  13.2   9.7  41.2   6.2
 3. Te5-4-ur01.bartlett.tn.malt.comca  0.0%   100   10.8  12.8   9.3  40.9   5.0
 4. 68.86.242.157                      0.0%   100   12.3  12.2   9.4  40.6   3.9
 5. be-92-ar02.dannythomas.tn.malt.co  0.0%   100   12.7  13.0  10.4  25.1   2.2
 6. be-22258-cr02.dallas.tx.ibone.com  0.0%   100   25.2  23.6  20.6  45.3   3.1
 7. be-12495-pe03.1950stemmons.tx.ibo  0.0%   100   20.7  22.4  20.2  36.5   3.1
 8. 66.208.228.66                      0.0%   100   23.6  22.6  19.4  46.8   4.1
 9. 108.170.252.162                    0.0%   100   23.5  23.7  19.7  53.7   5.7
10. 108.170.228.91                     0.0%   100   23.9  23.0  20.5  48.1   4.5
11. 209.85.243.161                     0.0%   100   32.3  34.1  30.6  53.7   4.3
12. 64.233.175.250                     0.0%   100   32.7  34.9  30.1  62.8   6.0
13. 108.170.249.129                    0.0%   100   33.0  33.2  30.1  68.6   5.0
14. 209.85.250.179                     0.0%   100   34.4  33.8  31.4  53.3   3.6
15. atl14s91-in-f14.1e100.net          0.0%   100   30.8  31.8  29.6  45.1   2.6

75.75.75.75

75.75.75.75 (Comcast's DNS) resolved google.com to 172.217.9.142 (dfw25s26-in-f14.1e100.net) in Dallas, 10 hops, ping average 21.5 ms.

[parse@word ~]$ dig +short A google.com @75.75.75.75
172.217.9.142

[parse@word ~]$ mtr -c 100 172.217.9.142

 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. router-external.home.lan          0.0%   100    3.3   1.8   0.8  29.9   3.5
 2. 96.120.15.nnn                     0.0%   100   10.6  12.0   9.8  25.8   2.7
 3. 68.85.55.249                      0.0%   100   11.8  12.8   9.2  38.3   5.2
 4. be-92-ar02.dannythomas.tn.malt.c  0.0%   100   13.2  14.0  10.6  38.8   4.2
 5. be-22258-cr02.dallas.tx.ibone.co  0.0%   100   23.7  24.2  20.8  53.2   4.5
 6. be-12495-pe03.1950stemmons.tx.ib  0.0%   100   21.5  22.6  19.8  50.3   4.1
 7. 66.208.228.66                     0.0%   100   23.1  22.8  19.6  43.1   4.0
 8. ???
 9. 216.239.42.99                     0.0%   100   21.4  22.2  19.7  37.6   3.0
10. dfw25s26-in-f14.1e100.net         0.0%   100   22.1  21.5  18.9  53.0   4.2

Summary

DNS server   | Answer RR        | City         | Avg Latency
-------------|------------------|--------------|------------
1.1.1.1      | 172.217.12.174   | New York, NY | 50.8 ms
4.2.2.4      | 216.58.194.110   | Dallas, TX   | 21.5 ms
8.8.8.8      | 172.217.6.174    | Dallas, TX   | 21.6 ms
9.9.9.9      | 172.217.164.46   | Atlanta, GA  | 31.8 ms
75.75.75.75  | 172.217.9.142    | Dallas, TX   | 21.5 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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