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 2026-08-21. For this date, NameServerHistory found 73 DNS check records, 72 successful responses, 1 failed responses, and 250 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

73

Historical checks stored for this nameserver on selected date

Average Latency

250 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-21 23:49

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

72

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

1%

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 2026-08-21 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
73 2026-08-21 23:49 639229527598660841
9 ms 63.245.215.5
72 2026-08-21 23:33 639229517954323214
2025 ms 63.245.215.5
71 2026-08-21 23:17 639229508269999021
3 ms 63.245.215.5
70 2026-08-21 23:01 639229498559060171
10 ms 63.245.215.5
69 2026-08-21 22:44 639229488519347586
24 ms 63.245.215.5
68 2026-08-21 21:51 639229456606578934
46 ms 63.245.215.5
67 2026-08-21 21:35 639229446985772499
56 ms 63.245.215.5
66 2026-08-21 21:19 639229437367313098
31 ms 63.245.215.5
65 2026-08-21 21:03 639229427923950391
32 ms 63.245.215.5
64 2026-08-21 20:47 639229418168588854
8 ms 63.245.215.5
63 2026-08-21 20:30 639229408345678334
41 ms 63.245.215.5
62 2026-08-21 20:14 639229398616354648
36 ms 63.245.215.5
61 2026-08-21 19:58 639229388634592323
124 ms 63.245.215.5
60 2026-08-21 19:41 639229378792837692
9 ms 63.245.215.5
59 2026-08-21 19:25 639229369154682311
43 ms 63.245.215.5
58 2026-08-21 19:09 639229359248017926
2037 ms 63.245.215.5
57 2026-08-21 18:52 639229349124294642
38 ms 63.245.215.5
56 2026-08-21 18:00 639229317791715692
15 ms 63.245.215.5
55 2026-08-21 17:43 639229308115194575
33 ms 63.245.215.5
54 2026-08-21 17:27 639229298320320558
33 ms 63.245.215.5
53 2026-08-21 17:11 639229288674863221
4 ms 63.245.215.5
52 2026-08-21 16:55 639229278983677079
42 ms 63.245.215.5
51 2026-08-21 16:39 639229269405517175
43 ms 63.245.215.5
50 2026-08-21 16:23 639229259594798244
10 ms 63.245.215.5
49 2026-08-21 16:06 639229249736681188
7 ms 63.245.215.5
48 2026-08-21 15:49 639229239699417787
9 ms 63.245.215.5
47 2026-08-21 15:33 639229229621964033
14 ms 63.245.215.5
46 2026-08-21 15:16 639229219567270965
41 ms 63.245.215.5
45 2026-08-21 14:59 639229209406666856
51 ms 63.245.215.5
44 2026-08-21 14:06 639229177815876178
10 ms 63.245.215.5
43 2026-08-21 13:50 639229168243572685
2014 ms 63.245.215.5
42 2026-08-21 13:34 639229158599856475
27 ms 63.245.215.5
41 2026-08-21 13:18 639229148998940902
2041 ms 63.245.215.5
40 2026-08-21 13:02 639229139276923594
34 ms 63.245.215.5
39 2026-08-21 12:46 639229129709912394
57 ms 63.245.215.5
38 2026-08-21 12:30 639229119801488500
59 ms 63.245.215.5
37 2026-08-21 12:13 639229110135262458
35 ms 63.245.215.5
36 2026-08-21 11:57 639229100336051392
2013 ms 63.245.215.5
35 2026-08-21 11:41 639229090641415626
2012 ms 63.245.215.5
34 2026-08-21 11:24 639229080702683947
18 ms 63.245.215.5
33 2026-08-21 11:08 639229070601456699
9 ms 63.245.215.5
32 2026-08-21 10:15 639229038947447232
25 ms 63.245.215.5
31 2026-08-21 09:59 639229029268708773
2017 ms 63.245.215.5
30 2026-08-21 09:43 639229019647910603
32 ms 63.245.215.5
29 2026-08-21 09:26 639229009983843738
26 ms 63.245.215.5
28 2026-08-21 09:10 639229000203331882
3 ms 63.245.215.5
27 2026-08-21 08:54 639228990302335999
88 ms 63.245.215.5
26 2026-08-21 08:37 639228980567740722
77 ms 63.245.215.5
25 2026-08-21 08:21 639228970762445174
35 ms 63.245.215.5
24 2026-08-21 08:05 639228961065054445
5 ms 63.245.215.5
23 2026-08-21 07:49 639228951224649885
7 ms 63.245.215.5
22 2026-08-21 07:32 639228941303864592
17 ms 63.245.215.5
21 2026-08-21 07:15 639228931191328583
59 ms 63.245.215.5
20 2026-08-21 06:23 639228899518173317
24 ms 63.245.215.5
19 2026-08-21 06:06 639228889785027669
32 ms 63.245.215.5
18 2026-08-21 05:50 639228880106330161
-
17 2026-08-21 05:34 639228870316184091
72 ms 63.245.215.5
16 2026-08-21 05:18 639228860695366512
2035 ms 63.245.215.5
15 2026-08-21 05:02 639228851027209500
8 ms 63.245.215.5
14 2026-08-21 04:46 639228841479265462
18 ms 63.245.215.5
13 2026-08-21 04:29 639228831752962260
8 ms 63.245.215.5
12 2026-08-21 04:13 639228821953295483
13 ms 63.245.215.5
11 2026-08-21 03:57 639228812227429953
40 ms 63.245.215.5
10 2026-08-21 03:41 639228802476107538
9 ms 63.245.215.5
9 2026-08-21 03:24 639228792525492032
4 ms 63.245.215.5
8 2026-08-21 02:32 639228761131421385
11 ms 63.245.215.5
7 2026-08-21 02:16 639228751571206692
22 ms 63.245.215.5
6 2026-08-21 01:59 639228741705571019
4 ms 63.245.215.5
5 2026-08-21 01:43 639228731642208228
4 ms 63.245.215.5
4 2026-08-21 00:51 639228700387002072
13 ms 63.245.215.5
3 2026-08-21 00:34 639228690742014433
11 ms 63.245.215.5
2 2026-08-21 00:18 639228680877937122
9 ms 63.245.215.5
1 2026-08-21 00:01 639228670775860800
56 ms 63.245.215.5