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 2026-08-08. For this date, NameServerHistory found 63 DNS check records, 63 successful responses, 0 failed responses, and 550 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

63

Historical checks stored for this nameserver on selected date

Average Latency

550 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-08 23:52

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

63

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 2026-08-08 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
63 2026-08-08 23:52 639218291874134258
242 ms 121.40.25.167
62 2026-08-08 23:37 639218282817785496
483 ms 121.40.25.167
61 2026-08-08 22:46 639218252106422334
241 ms 121.40.25.167
60 2026-08-08 22:31 639218243323944113
473 ms 121.40.25.167
59 2026-08-08 22:16 639218234397020230
479 ms 121.40.25.167
58 2026-08-08 22:01 639218225412858763
253 ms 121.40.25.167
57 2026-08-08 21:10 639218194282616684
239 ms 121.40.25.167
56 2026-08-08 20:55 639218185036989606
471 ms 121.40.25.167
55 2026-08-08 20:39 639218175974363575
468 ms 121.40.25.167
54 2026-08-08 20:24 639218166972644815
468 ms 121.40.25.167
53 2026-08-08 19:33 639218135900313734
242 ms 121.40.25.167
52 2026-08-08 19:18 639218127088470726
243 ms 121.40.25.167
51 2026-08-08 19:03 639218118310406743
236 ms 121.40.25.167
50 2026-08-08 18:48 639218109452520238
472 ms 121.40.25.167
49 2026-08-08 17:56 639218078440804962
247 ms 121.40.25.167
48 2026-08-08 17:42 639218069827056995
251 ms 121.40.25.167
47 2026-08-08 17:27 639218060928974999
504 ms 121.40.25.167
46 2026-08-08 17:12 639218052072104591
319 ms 121.40.25.167
45 2026-08-08 16:21 639218021131612993
2257 ms 121.40.25.167
44 2026-08-08 16:06 639218012544891033
247 ms 121.40.25.167
43 2026-08-08 15:52 639218003733822367
995 ms 121.40.25.167
42 2026-08-08 15:37 639217994998349201
242 ms 121.40.25.167
41 2026-08-08 14:45 639217963788814319
479 ms 121.40.25.167
40 2026-08-08 14:31 639217955087396874
503 ms 121.40.25.167
39 2026-08-08 14:16 639217946350294952
259 ms 121.40.25.167
38 2026-08-08 14:02 639217937526020436
516 ms 121.40.25.167
37 2026-08-08 13:10 639217906769667024
244 ms 121.40.25.167
36 2026-08-08 12:56 639217898300938849
505 ms 121.40.25.167
35 2026-08-08 12:42 639217889778639925
271 ms 121.40.25.167
34 2026-08-08 12:27 639217881083065140
264 ms 121.40.25.167
33 2026-08-08 11:36 639217850620659312
251 ms 121.40.25.167
32 2026-08-08 11:22 639217841938624907
552 ms 121.40.25.167
31 2026-08-08 11:08 639217833389546843
243 ms 121.40.25.167
30 2026-08-08 10:53 639217824846173945
1247 ms 121.40.25.167
29 2026-08-08 10:02 639217793807292972
2259 ms 121.40.25.167
28 2026-08-08 09:48 639217785208951403
327 ms 121.40.25.167
27 2026-08-08 09:33 639217776566534942
274 ms 121.40.25.167
26 2026-08-08 09:19 639217767935139326
533 ms 121.40.25.167
25 2026-08-08 08:27 639217737225367411
544 ms 121.40.25.167
24 2026-08-08 08:13 639217728765093674
742 ms 121.40.25.167
23 2026-08-08 07:59 639217720136905586
1009 ms 121.40.25.167
22 2026-08-08 07:45 639217711410853004
230 ms 121.40.25.167
21 2026-08-08 06:52 639217680275549698
2543 ms 121.40.25.167
20 2026-08-08 06:38 639217671340563867
1296 ms 121.40.25.167
19 2026-08-08 06:23 639217662739829952
506 ms 121.40.25.167
18 2026-08-08 06:09 639217654129395144
546 ms 121.40.25.167
17 2026-08-08 05:18 639217623690502934
485 ms 121.40.25.167
16 2026-08-08 05:04 639217615180184169
246 ms 121.40.25.167
15 2026-08-08 04:49 639217606737293244
479 ms 121.40.25.167
14 2026-08-08 04:35 639217598089858483
468 ms 121.40.25.167
13 2026-08-08 03:44 639217567343169140
216 ms 121.40.25.167
12 2026-08-08 03:30 639217558743892856
263 ms 121.40.25.167
11 2026-08-08 03:15 639217550069823359
526 ms 121.40.25.167
10 2026-08-08 03:01 639217541571663863
544 ms 121.40.25.167
9 2026-08-08 02:06 639217510598671918
292 ms 121.40.25.167
8 2026-08-08 01:52 639217501853904641
463 ms 121.40.25.167
7 2026-08-08 01:37 639217492857464038
213 ms 121.40.25.167
6 2026-08-08 01:22 639217483935810845
518 ms 121.40.25.167
5 2026-08-08 01:07 639217475281344873
495 ms 121.40.25.167
4 2026-08-08 00:53 639217466591266473
239 ms 121.40.25.167
3 2026-08-08 00:38 639217457842031506
512 ms 121.40.25.167
2 2026-08-08 00:24 639217449192590684
234 ms 121.40.25.167
1 2026-08-08 00:09 639217440385817840
2251 ms 121.40.25.167