DNS response history for ns1.cncfstack.com

ns1.cncfstack.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 2026-08-22. For this date, NameServerHistory found 73 DNS check records, 73 successful responses, 0 failed responses, and 568 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.cncfstack.com.
Records on Selected Date

73

Historical checks stored for this nameserver on selected date

Average Latency

568 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-22 23:44

All timestamps shown in UTC

Latest Resolved IP on Selected Date

121.40.25.167

Most recently resolved hosting IP on selected date

Successful Responses

73

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 ns1.cncfstack.com

Showing DNS history for 2026-08-22 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 2026-08-22 23:44 639230382051619327
273 ms 121.40.25.167
72 2026-08-22 23:27 639230372323353529
505 ms 121.40.25.167
71 2026-08-22 23:11 639230362586451064
479 ms 121.40.25.167
70 2026-08-22 22:55 639230352793666303
550 ms 121.40.25.167
69 2026-08-22 22:38 639230342775737758
495 ms 121.40.25.167
68 2026-08-22 22:22 639230332639939561
257 ms 121.40.25.167
67 2026-08-22 21:29 639230301014190104
536 ms 121.40.25.167
66 2026-08-22 21:12 639230291048161498
510 ms 121.40.25.167
65 2026-08-22 20:55 639230280894353664
258 ms 121.40.25.167
64 2026-08-22 20:38 639230270699419073
548 ms 121.40.25.167
63 2026-08-22 20:21 639230260248163050
496 ms 121.40.25.167
62 2026-08-22 20:04 639230250122494282
272 ms 121.40.25.167
61 2026-08-22 19:47 639230239972935046
257 ms 121.40.25.167
60 2026-08-22 19:30 639230229963262464
513 ms 121.40.25.167
59 2026-08-22 19:13 639230220033804658
268 ms 121.40.25.167
58 2026-08-22 18:57 639230209891107289
258 ms 121.40.25.167
57 2026-08-22 18:40 639230199630298717
537 ms 121.40.25.167
56 2026-08-22 18:23 639230189301984150
542 ms 121.40.25.167
55 2026-08-22 17:29 639230157138468804
289 ms 121.40.25.167
54 2026-08-22 17:12 639230146987869495
547 ms 121.40.25.167
53 2026-08-22 16:55 639230136768638516
248 ms 121.40.25.167
52 2026-08-22 16:38 639230126735907877
278 ms 121.40.25.167
51 2026-08-22 16:21 639230116551187768
592 ms 121.40.25.167
50 2026-08-22 16:04 639230106335615913
512 ms 121.40.25.167
49 2026-08-22 15:47 639230096177758176
291 ms 121.40.25.167
48 2026-08-22 15:31 639230086185999993
528 ms 121.40.25.167
47 2026-08-22 15:14 639230076247854903
516 ms 121.40.25.167
46 2026-08-22 14:57 639230066076077530
502 ms 121.40.25.167
45 2026-08-22 14:40 639230055738197328
517 ms 121.40.25.167
44 2026-08-22 14:23 639230045411225521
495 ms 121.40.25.167
43 2026-08-22 13:29 639230013046000470
505 ms 121.40.25.167
42 2026-08-22 13:12 639230003090037878
511 ms 121.40.25.167
41 2026-08-22 12:55 639229993008259475
512 ms 121.40.25.167
40 2026-08-22 12:39 639229982909449470
520 ms 121.40.25.167
39 2026-08-22 12:22 639229973035502212
521 ms 121.40.25.167
38 2026-08-22 12:05 639229963064296145
245 ms 121.40.25.167
37 2026-08-22 11:49 639229952996162143
245 ms 121.40.25.167
36 2026-08-22 11:32 639229943051949195
513 ms 121.40.25.167
35 2026-08-22 11:15 639229932919214934
520 ms 121.40.25.167
34 2026-08-22 10:58 639229922745889838
1517 ms 121.40.25.167
33 2026-08-22 10:41 639229912587214796
499 ms 121.40.25.167
32 2026-08-22 10:24 639229902240004454
505 ms 121.40.25.167
31 2026-08-22 09:32 639229870800501662
247 ms 121.40.25.167
30 2026-08-22 09:15 639229861058384956
1520 ms 121.40.25.167
29 2026-08-22 08:59 639229851158592604
252 ms 121.40.25.167
28 2026-08-22 08:43 639229841475569629
994 ms 121.40.25.167
27 2026-08-22 08:26 639229831887658471
522 ms 121.40.25.167
26 2026-08-22 08:10 639229822043670346
2254 ms 121.40.25.167
25 2026-08-22 07:54 639229812327913936
250 ms 121.40.25.167
24 2026-08-22 07:38 639229802629488686
2321 ms 121.40.25.167
23 2026-08-22 07:22 639229793051447309
323 ms 121.40.25.167
22 2026-08-22 07:06 639229783303531961
1167 ms 121.40.25.167
21 2026-08-22 06:49 639229773458051942
526 ms 121.40.25.167
20 2026-08-22 06:33 639229763373848056
243 ms 121.40.25.167
19 2026-08-22 05:40 639229732140622809
2312 ms 121.40.25.167
18 2026-08-22 05:24 639229722699695967
510 ms 121.40.25.167
17 2026-08-22 05:08 639229713097498075
837 ms 121.40.25.167
16 2026-08-22 04:53 639229703543969637
170 ms 121.40.25.167
15 2026-08-22 04:37 639229693970392873
487 ms 121.40.25.167
14 2026-08-22 04:20 639229684277329469
256 ms 121.40.25.167
13 2026-08-22 04:04 639229674501596661
233 ms 121.40.25.167
12 2026-08-22 03:48 639229665064441147
507 ms 121.40.25.167
11 2026-08-22 03:32 639229655507536872
255 ms 121.40.25.167
10 2026-08-22 03:16 639229645849603111
518 ms 121.40.25.167
9 2026-08-22 03:00 639229636090497453
260 ms 121.40.25.167
8 2026-08-22 02:44 639229625978544281
537 ms 121.40.25.167
7 2026-08-22 01:51 639229594644662176
1705 ms 121.40.25.167
6 2026-08-22 01:35 639229585214633065
533 ms 121.40.25.167
5 2026-08-22 01:19 639229575581042175
513 ms 121.40.25.167
4 2026-08-22 01:03 639229565912268962
230 ms 121.40.25.167
3 2026-08-22 00:47 639229556237813203
535 ms 121.40.25.167
2 2026-08-22 00:31 639229546625802518
478 ms 121.40.25.167
1 2026-08-22 00:15 639229537172016621
502 ms 121.40.25.167