DNS response history for ls.undernet.cz

ls.undernet.cz 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 2026-08-25. For this date, NameServerHistory found 42 DNS check records, 42 successful responses, 0 failed responses, and 267 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 ls.undernet.cz.
Records on Selected Date

42

Historical checks stored for this nameserver on selected date

Average Latency

267 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-25 14:15

All timestamps shown in UTC

Latest Resolved IP on Selected Date

185.71.235.199

Most recently resolved hosting IP on selected date

Successful Responses

42

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 ls.undernet.cz

Showing DNS history for 2026-08-25 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
42 2026-08-25 14:15 639232638994329666
39 ms 185.71.235.199
41 2026-08-25 13:58 639232628614783237
4098 ms 185.71.235.199
40 2026-08-25 13:40 639232618360728578
78 ms 185.71.235.199
39 2026-08-25 13:23 639232608016476376
79 ms 185.71.235.199
38 2026-08-25 13:06 639232597643611557
97 ms 185.71.235.199
37 2026-08-25 12:49 639232587225721862
32 ms 185.71.235.199
36 2026-08-25 12:31 639232576780683689
95 ms 185.71.235.199
35 2026-08-25 12:14 639232566381512620
79 ms 185.71.235.199
34 2026-08-25 11:57 639232556111768563
46 ms 185.71.235.199
33 2026-08-25 11:40 639232545839529039
2015 ms 185.71.235.199
32 2026-08-25 11:22 639232535349285207
73 ms 185.71.235.199
31 2026-08-25 11:05 639232524938080723
77 ms 185.71.235.199
30 2026-08-25 10:11 639232492740373468
37 ms 185.71.235.199
29 2026-08-25 09:54 639232482235303141
71 ms 185.71.235.199
28 2026-08-25 09:36 639232471861770303
37 ms 185.71.235.199
27 2026-08-25 09:19 639232461630217327
80 ms 185.71.235.199
26 2026-08-25 09:02 639232451282965990
67 ms 185.71.235.199
25 2026-08-25 08:45 639232440814614938
118 ms 185.71.235.199
24 2026-08-25 08:27 639232430410720425
72 ms 185.71.235.199
23 2026-08-25 08:10 639232420003096185
105 ms 185.71.235.199
22 2026-08-25 07:52 639232409467287444
48 ms 185.71.235.199
21 2026-08-25 07:35 639232399077195997
54 ms 185.71.235.199
20 2026-08-25 07:18 639232388731528337
61 ms 185.71.235.199
19 2026-08-25 07:00 639232378288598612
50 ms 185.71.235.199
18 2026-08-25 06:07 639232346196373643
122 ms 185.71.235.199
17 2026-08-25 05:50 639232336112370741
2072 ms 185.71.235.199
16 2026-08-25 05:33 639232326146508970
72 ms 185.71.235.199
15 2026-08-25 05:17 639232316189381720
31 ms 185.71.235.199
14 2026-08-25 05:00 639232306217998913
73 ms 185.71.235.199
13 2026-08-25 04:44 639232296255744174
47 ms 185.71.235.199
12 2026-08-25 04:27 639232286095760789
97 ms 185.71.235.199
11 2026-08-25 04:10 639232276086186273
243 ms 185.71.235.199
10 2026-08-25 03:53 639232265900986425
98 ms 185.71.235.199
9 2026-08-25 03:36 639232255723518075
68 ms 185.71.235.199
8 2026-08-25 03:19 639232245484452890
49 ms 185.71.235.199
7 2026-08-25 03:02 639232235157175331
68 ms 185.71.235.199
6 2026-08-25 02:08 639232203197189095
98 ms 185.71.235.199
5 2026-08-25 01:51 639232192844564298
72 ms 185.71.235.199
4 2026-08-25 01:34 639232182496008942
33 ms 185.71.235.199
3 2026-08-25 01:17 639232172197053132
67 ms 185.71.235.199
2 2026-08-25 00:24 639232140250307418
71 ms 185.71.235.199
1 2026-08-25 00:06 639232129927860324
228 ms 185.71.235.199