DNS response history for ns4.cloudflare.com

ns4.cloudflare.com 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 144 DNS check records, 144 successful responses, 0 failed responses, and 185 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 ns4.cloudflare.com.
Records on Selected Date

144

Historical checks stored for this nameserver on selected date

Average Latency

185 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-21 23:47

All timestamps shown in UTC

Latest Resolved IP on Selected Date

162.159.1.33

Most recently resolved hosting IP on selected date

Successful Responses

144

Checks that returned a measurable response

Failed Responses

0

Checks with no response or no returned latency

Failure Rate

0%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns4.cloudflare.com

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
144 2026-08-21 23:47 639229527598660841
22 ms 162.159.1.33
143 2026-08-21 23:47 639229527598660841
22 ms 162.159.8.55
142 2026-08-21 23:31 639229517954323214
43 ms 162.159.1.33
141 2026-08-21 23:31 639229517954323214
43 ms 162.159.8.55
140 2026-08-21 23:14 639229508269999021
8 ms 162.159.1.33
139 2026-08-21 23:14 639229508269999021
8 ms 162.159.8.55
138 2026-08-21 22:58 639229498559060171
46 ms 162.159.1.33
137 2026-08-21 22:58 639229498559060171
46 ms 162.159.8.55
136 2026-08-21 22:42 639229488519347586
26 ms 162.159.1.33
135 2026-08-21 22:42 639229488519347586
26 ms 162.159.8.55
134 2026-08-21 21:48 639229456606578934
28 ms 162.159.1.33
133 2026-08-21 21:48 639229456606578934
28 ms 162.159.8.55
132 2026-08-21 21:32 639229446985772499
15 ms 162.159.1.33
131 2026-08-21 21:32 639229446985772499
15 ms 162.159.8.55
130 2026-08-21 21:16 639229437367313098
5 ms 162.159.1.33
129 2026-08-21 21:16 639229437367313098
5 ms 162.159.8.55
128 2026-08-21 21:01 639229427923950391
3 ms 162.159.1.33
127 2026-08-21 21:01 639229427923950391
3 ms 162.159.8.55
126 2026-08-21 20:44 639229418168588854
4021 ms 162.159.1.33
125 2026-08-21 20:44 639229418168588854
4021 ms 162.159.8.55
124 2026-08-21 20:28 639229408345678334
13 ms 162.159.1.33
123 2026-08-21 20:28 639229408345678334
13 ms 162.159.8.55
122 2026-08-21 20:12 639229398616354648
10 ms 162.159.1.33
121 2026-08-21 20:12 639229398616354648
10 ms 162.159.8.55
120 2026-08-21 19:55 639229388634592323
4 ms 162.159.1.33
119 2026-08-21 19:55 639229388634592323
4 ms 162.159.8.55
118 2026-08-21 19:39 639229378792837692
5 ms 162.159.1.33
117 2026-08-21 19:39 639229378792837692
5 ms 162.159.8.55
116 2026-08-21 19:23 639229369154682311
23 ms 162.159.8.55
115 2026-08-21 19:23 639229369154682311
23 ms 162.159.1.33
114 2026-08-21 19:06 639229359248017926
32 ms 162.159.8.55
113 2026-08-21 19:06 639229359248017926
32 ms 162.159.1.33
112 2026-08-21 18:49 639229349124294642
25 ms 162.159.1.33
111 2026-08-21 18:49 639229349124294642
25 ms 162.159.8.55
110 2026-08-21 17:57 639229317791715692
12 ms 162.159.1.33
109 2026-08-21 17:57 639229317791715692
12 ms 162.159.8.55
108 2026-08-21 17:41 639229308115194575
7 ms 162.159.1.33
107 2026-08-21 17:41 639229308115194575
7 ms 162.159.8.55
106 2026-08-21 17:25 639229298320320558
19 ms 162.159.1.33
105 2026-08-21 17:25 639229298320320558
19 ms 162.159.8.55
104 2026-08-21 17:09 639229288674863221
7 ms 162.159.1.33
103 2026-08-21 17:09 639229288674863221
7 ms 162.159.8.55
102 2026-08-21 16:52 639229278983677079
5 ms 162.159.1.33
101 2026-08-21 16:52 639229278983677079
5 ms 162.159.8.55
100 2026-08-21 16:36 639229269405517175
40 ms 162.159.1.33
99 2026-08-21 16:36 639229269405517175
40 ms 162.159.8.55
98 2026-08-21 16:20 639229259594798244
10 ms 162.159.8.55
97 2026-08-21 16:20 639229259594798244
10 ms 162.159.1.33
96 2026-08-21 16:04 639229249736681188
2037 ms 162.159.1.33
95 2026-08-21 16:04 639229249736681188
2037 ms 162.159.8.55
94 2026-08-21 15:47 639229239699417787
9 ms 162.159.1.33
93 2026-08-21 15:47 639229239699417787
9 ms 162.159.8.55
92 2026-08-21 15:30 639229229621964033
48 ms 162.159.8.55
91 2026-08-21 15:30 639229229621964033
48 ms 162.159.1.33
90 2026-08-21 15:13 639229219567270965
29 ms 162.159.1.33
89 2026-08-21 15:13 639229219567270965
29 ms 162.159.8.55
88 2026-08-21 14:56 639229209406666856
6 ms 162.159.1.33
87 2026-08-21 14:56 639229209406666856
6 ms 162.159.8.55
86 2026-08-21 14:04 639229177815876178
10 ms 162.159.1.33
85 2026-08-21 14:04 639229177815876178
10 ms 162.159.8.55
84 2026-08-21 13:48 639229168243572685
43 ms 162.159.1.33
83 2026-08-21 13:48 639229168243572685
43 ms 162.159.8.55
82 2026-08-21 13:32 639229158599856475
12 ms 162.159.1.33
81 2026-08-21 13:32 639229158599856475
12 ms 162.159.8.55
80 2026-08-21 13:16 639229148998940902
23 ms 162.159.1.33
79 2026-08-21 13:16 639229148998940902
23 ms 162.159.8.55
78 2026-08-21 13:00 639229139276923594
45 ms 162.159.1.33
77 2026-08-21 13:00 639229139276923594
45 ms 162.159.8.55
76 2026-08-21 12:44 639229129709912394
14 ms 162.159.8.55
75 2026-08-21 12:44 639229129709912394
14 ms 162.159.1.33
74 2026-08-21 12:27 639229119801488500
12 ms 162.159.1.33
73 2026-08-21 12:27 639229119801488500
12 ms 162.159.8.55
72 2026-08-21 12:11 639229110135262458
27 ms 162.159.1.33
71 2026-08-21 12:11 639229110135262458
27 ms 162.159.8.55
70 2026-08-21 11:55 639229100336051392
9 ms 162.159.1.33
69 2026-08-21 11:55 639229100336051392
9 ms 162.159.8.55
68 2026-08-21 11:38 639229090641415626
31 ms 162.159.1.33
67 2026-08-21 11:38 639229090641415626
31 ms 162.159.8.55
66 2026-08-21 11:22 639229080702683947
15 ms 162.159.1.33
65 2026-08-21 11:22 639229080702683947
15 ms 162.159.8.55
64 2026-08-21 11:05 639229070601456699
16 ms 162.159.8.55
63 2026-08-21 11:05 639229070601456699
16 ms 162.159.1.33
62 2026-08-21 10:12 639229038947447232
8 ms 162.159.8.55
61 2026-08-21 10:12 639229038947447232
8 ms 162.159.1.33
60 2026-08-21 09:56 639229029268708773
38 ms 162.159.1.33
59 2026-08-21 09:56 639229029268708773
38 ms 162.159.8.55
58 2026-08-21 09:40 639229019647910603
11 ms 162.159.8.55
57 2026-08-21 09:40 639229019647910603
11 ms 162.159.1.33
56 2026-08-21 09:24 639229009983843738
27 ms 162.159.8.55
55 2026-08-21 09:24 639229009983843738
27 ms 162.159.1.33
54 2026-08-21 09:08 639229000203331882
5 ms 162.159.1.33
53 2026-08-21 09:08 639229000203331882
5 ms 162.159.8.55
52 2026-08-21 08:51 639228990302335999
15 ms 162.159.8.55
51 2026-08-21 08:51 639228990302335999
15 ms 162.159.1.33
50 2026-08-21 08:35 639228980567740722
18 ms 162.159.1.33
49 2026-08-21 08:35 639228980567740722
18 ms 162.159.8.55
48 2026-08-21 08:19 639228970762445174
59 ms 162.159.1.33
47 2026-08-21 08:19 639228970762445174
59 ms 162.159.8.55
46 2026-08-21 08:02 639228961065054445
2026 ms 162.159.1.33
45 2026-08-21 08:02 639228961065054445
2026 ms 162.159.8.55
44 2026-08-21 07:46 639228951224649885
15 ms 162.159.1.33
43 2026-08-21 07:46 639228951224649885
15 ms 162.159.8.55
42 2026-08-21 07:30 639228941303864592
4 ms 162.159.1.33
41 2026-08-21 07:30 639228941303864592
4 ms 162.159.8.55
40 2026-08-21 07:13 639228931191328583
4 ms 162.159.1.33
39 2026-08-21 07:13 639228931191328583
4 ms 162.159.8.55
38 2026-08-21 06:20 639228899518173317
26 ms 162.159.1.33
37 2026-08-21 06:20 639228899518173317
26 ms 162.159.8.55
36 2026-08-21 06:04 639228889785027669
18 ms 162.159.1.33
35 2026-08-21 06:04 639228889785027669
18 ms 162.159.8.55
34 2026-08-21 05:48 639228880106330161
4 ms 162.159.1.33
33 2026-08-21 05:48 639228880106330161
4 ms 162.159.8.55
32 2026-08-21 05:31 639228870316184091
2013 ms 162.159.1.33
31 2026-08-21 05:31 639228870316184091
2013 ms 162.159.8.55
30 2026-08-21 05:15 639228860695366512
4 ms 162.159.1.33
29 2026-08-21 05:15 639228860695366512
4 ms 162.159.8.55
28 2026-08-21 04:59 639228851027209500
31 ms 162.159.1.33
27 2026-08-21 04:59 639228851027209500
31 ms 162.159.8.55
26 2026-08-21 04:43 639228841479265462
26 ms 162.159.8.55
25 2026-08-21 04:43 639228841479265462
26 ms 162.159.1.33
24 2026-08-21 04:27 639228831752962260
11 ms 162.159.1.33
23 2026-08-21 04:27 639228831752962260
11 ms 162.159.8.55
22 2026-08-21 04:11 639228821953295483
13 ms 162.159.1.33
21 2026-08-21 04:11 639228821953295483
13 ms 162.159.8.55
20 2026-08-21 03:54 639228812227429953
9 ms 162.159.8.55
19 2026-08-21 03:54 639228812227429953
9 ms 162.159.1.33
18 2026-08-21 03:38 639228802476107538
28 ms 162.159.1.33
17 2026-08-21 03:38 639228802476107538
28 ms 162.159.8.55
16 2026-08-21 03:22 639228792525492032
4 ms 162.159.1.33
15 2026-08-21 03:22 639228792525492032
4 ms 162.159.8.55
14 2026-08-21 02:29 639228761131421385
29 ms 162.159.8.55
13 2026-08-21 02:29 639228761131421385
29 ms 162.159.1.33
12 2026-08-21 02:13 639228751571206692
3 ms 162.159.1.33
11 2026-08-21 02:13 639228751571206692
3 ms 162.159.8.55
10 2026-08-21 01:57 639228741705571019
3 ms 162.159.1.33
9 2026-08-21 01:57 639228741705571019
3 ms 162.159.8.55
8 2026-08-21 01:40 639228731642208228
2018 ms 162.159.8.55
7 2026-08-21 01:40 639228731642208228
2018 ms 162.159.1.33
6 2026-08-21 00:48 639228700387002072
10 ms 162.159.1.33
5 2026-08-21 00:48 639228700387002072
10 ms 162.159.8.55
4 2026-08-21 00:32 639228690742014433
5 ms 162.159.1.33
3 2026-08-21 00:32 639228690742014433
5 ms 162.159.8.55
2 2026-08-21 00:16 639228680877937122
21 ms 162.159.1.33
1 2026-08-21 00:16 639228680877937122
21 ms 162.159.8.55