DNS response history for ns1.mozilla.org

ns1.mozilla.org is a DNS nameserver monitored by NameServerHistory. This page provides historical DNS response-time data, nameserver uptime signals, DNS latency observations, resolved IP history, successful response counts, failed response counts, and reliability indicators for this nameserver.

The selected UTC date is 2026-08-20. For this date, NameServerHistory found 56 DNS check records, 54 successful responses, 2 failed responses, and 70 ms average response time. Current selected-date status: At least one successful DNS response was recorded for the selected date.

  • Use this report to investigate historical DNS uptime and nameserver reliability.
  • Compare DNS latency changes, failed DNS checks, and response behavior over time.
  • Review the latest resolved IP address and raw DNS check history for ns1.mozilla.org.
Records on Selected Date

56

Historical checks stored for this nameserver on selected date

Average Latency

70 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-20 23:10

All timestamps shown in UTC

Latest Resolved IP on Selected Date

63.245.215.5

Most recently resolved hosting IP on selected date

Successful Responses

54

Checks that returned a measurable response

Failed Responses

2

Checks with no response or no returned latency

Failure Rate

4%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns1.mozilla.org

Showing DNS history for 2026-08-20 UTC. Newest records appear first.

Latency bars are scaled to a maximum of 5000 ms for quick visual comparison.

# Query Time (UTC) Correlation ID Latency Response IP Address
56 2026-08-20 23:10 639228639850033448
62 ms 63.245.215.5
55 2026-08-20 22:53 639228630204271870
45 ms 63.245.215.5
54 2026-08-20 22:37 639228620295091135
4 ms 63.245.215.5
53 2026-08-20 22:20 639228610298336915
47 ms 63.245.215.5
52 2026-08-20 21:28 639228578917047616
9 ms 63.245.215.5
51 2026-08-20 21:12 639228569046445709
32 ms 63.245.215.5
50 2026-08-20 20:55 639228558946830986
15 ms 63.245.215.5
49 2026-08-20 20:38 639228548977359217
277 ms 63.245.215.5
48 2026-08-20 19:46 639228517494157668
4 ms 63.245.215.5
47 2026-08-20 19:29 639228507374116892
7 ms 63.245.215.5
46 2026-08-20 19:12 639228497315154893
5 ms 63.245.215.5
45 2026-08-20 18:55 639228487287648341
6 ms 63.245.215.5
44 2026-08-20 18:03 639228455828123788
37 ms 63.245.215.5
43 2026-08-20 17:46 639228445900082244
60 ms 63.245.215.5
42 2026-08-20 17:30 639228435866352323
10 ms 63.245.215.5
41 2026-08-20 17:13 639228425802273151
26 ms 63.245.215.5
40 2026-08-20 16:19 639228393616324230
74 ms 63.245.215.5
39 2026-08-20 16:02 639228383590408693
5 ms 63.245.215.5
38 2026-08-20 15:46 639228373471467474
58 ms 63.245.215.5
37 2026-08-20 15:29 639228363426647311
15 ms 63.245.215.5
36 2026-08-20 14:36 639228331681701910
38 ms 63.245.215.5
35 2026-08-20 14:19 639228321714746824
15 ms 63.245.215.5
34 2026-08-20 14:03 639228311652090262
36 ms 63.245.215.5
33 2026-08-20 13:46 639228301670088587
36 ms 63.245.215.5
32 2026-08-20 12:53 639228269987976710
27 ms 63.245.215.5
31 2026-08-20 12:36 639228260009452308
5 ms 63.245.215.5
30 2026-08-20 12:19 639228249661740894
6 ms 63.245.215.5
29 2026-08-20 12:02 639228239552680346
121 ms 63.245.215.5
28 2026-08-20 11:09 639228207667580819
60 ms 63.245.215.5
27 2026-08-20 10:52 639228197494011560
5 ms 63.245.215.5
26 2026-08-20 10:36 639228187497039939
24 ms 63.245.215.5
25 2026-08-20 10:19 639228177408432646
44 ms 63.245.215.5
24 2026-08-20 09:27 639228146356166262
20 ms 63.245.215.5
23 2026-08-20 09:11 639228136541505712
19 ms 63.245.215.5
22 2026-08-20 08:54 639228126519136598
6 ms 63.245.215.5
21 2026-08-20 08:37 639228116537148885
59 ms 63.245.215.5
20 2026-08-20 07:45 639228085320764351
21 ms 63.245.215.5
19 2026-08-20 07:29 639228075444604839
7 ms 63.245.215.5
18 2026-08-20 07:13 639228065615498985
2015 ms 63.245.215.5
17 2026-08-20 06:56 639228055675321422
7 ms 63.245.215.5
16 2026-08-20 06:04 639228024230839396
23 ms 63.245.215.5
15 2026-08-20 05:48 639228014720406505
4 ms 63.245.215.5
14 2026-08-20 05:31 639228004930827030
29 ms 63.245.215.5
13 2026-08-20 05:15 639227995103340154
68 ms 63.245.215.5
12 2026-08-20 04:23 639227963811374894
35 ms 63.245.215.5
11 2026-08-20 04:07 639227954132571365
50 ms 63.245.215.5
10 2026-08-20 03:51 639227944541208342
5 ms 63.245.215.5
9 2026-08-20 03:34 639227934657213484
63 ms 63.245.215.5
8 2026-08-20 02:43 639227903628145469
-
7 2026-08-20 02:27 639227893995483475
14 ms 63.245.215.5
6 2026-08-20 02:10 639227884280244209
14 ms 63.245.215.5
5 2026-08-20 01:54 639227874371147132
-
4 2026-08-20 01:02 639227843224256432
5 ms 63.245.215.5
3 2026-08-20 00:46 639227833720403506
17 ms 63.245.215.5
2 2026-08-20 00:30 639227824170728278
35 ms 63.245.215.5
1 2026-08-20 00:15 639227814865867570
26 ms 63.245.215.5