DNS response history for ns4.cdn.ir

ns4.cdn.ir 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 57 DNS check records, 56 successful responses, 1 failed responses, and 82 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.cdn.ir.
Records on Selected Date

57

Historical checks stored for this nameserver on selected date

Average Latency

82 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-25 19:50

All timestamps shown in UTC

Latest Resolved IP on Selected Date

193.151.156.254

Most recently resolved hosting IP on selected date

Successful Responses

56

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

2%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns4.cdn.ir

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
57 2026-08-25 19:50 639232838596478500
33 ms 193.151.156.254
56 2026-08-25 19:33 639232828175327683
81 ms 193.151.156.254
55 2026-08-25 19:15 639232817798330473
28 ms 193.151.156.254
54 2026-08-25 18:21 639232785462407552
15 ms 193.151.156.254
53 2026-08-25 18:04 639232775177487032
22 ms 193.151.156.254
52 2026-08-25 17:47 639232764991087115
29 ms 193.151.156.254
51 2026-08-25 17:30 639232754842971478
-
50 2026-08-25 17:13 639232744455159107
8 ms 193.151.156.254
49 2026-08-25 16:56 639232734145178231
23 ms 193.151.156.254
48 2026-08-25 16:39 639232723827874402
52 ms 193.151.156.254
47 2026-08-25 16:22 639232713533011892
66 ms 193.151.156.254
46 2026-08-25 16:04 639232703065318207
72 ms 193.151.156.254
45 2026-08-25 15:47 639232692629559470
8 ms 193.151.156.254
44 2026-08-25 15:29 639232682238836475
28 ms 193.151.156.254
43 2026-08-25 15:12 639232671787004306
29 ms 193.151.156.254
42 2026-08-25 14:17 639232638994329666
7 ms 193.151.156.254
41 2026-08-25 14:00 639232628614783237
26 ms 193.151.156.254
40 2026-08-25 13:43 639232618360728578
2040 ms 193.151.156.254
39 2026-08-25 13:26 639232608016476376
58 ms 193.151.156.254
38 2026-08-25 13:08 639232597643611557
30 ms 193.151.156.254
37 2026-08-25 12:51 639232587225721862
38 ms 193.151.156.254
36 2026-08-25 12:34 639232576780683689
108 ms 193.151.156.254
35 2026-08-25 12:16 639232566381512620
22 ms 193.151.156.254
34 2026-08-25 11:59 639232556111768563
29 ms 193.151.156.254
33 2026-08-25 11:42 639232545839529039
20 ms 193.151.156.254
32 2026-08-25 11:25 639232535349285207
35 ms 193.151.156.254
31 2026-08-25 11:07 639232524938080723
47 ms 193.151.156.254
30 2026-08-25 10:13 639232492740373468
10 ms 193.151.156.254
29 2026-08-25 09:56 639232482235303141
30 ms 193.151.156.254
28 2026-08-25 09:39 639232471861770303
7 ms 193.151.156.254
27 2026-08-25 09:22 639232461630217327
124 ms 193.151.156.254
26 2026-08-25 09:04 639232451282965990
16 ms 193.151.156.254
25 2026-08-25 08:47 639232440814614938
28 ms 193.151.156.254
24 2026-08-25 08:30 639232430410720425
24 ms 193.151.156.254
23 2026-08-25 08:12 639232420003096185
85 ms 193.151.156.254
22 2026-08-25 07:55 639232409467287444
20 ms 193.151.156.254
21 2026-08-25 07:37 639232399077195997
23 ms 193.151.156.254
20 2026-08-25 07:20 639232388731528337
242 ms 193.151.156.254
19 2026-08-25 07:03 639232378288598612
38 ms 193.151.156.254
18 2026-08-25 06:09 639232346196373643
136 ms 193.151.156.254
17 2026-08-25 05:52 639232336112370741
34 ms 193.151.156.254
16 2026-08-25 05:36 639232326146508970
29 ms 193.151.156.254
15 2026-08-25 05:19 639232316189381720
38 ms 193.151.156.254
14 2026-08-25 05:03 639232306217998913
44 ms 193.151.156.254
13 2026-08-25 04:46 639232296255744174
19 ms 193.151.156.254
12 2026-08-25 04:29 639232286095760789
137 ms 193.151.156.254
11 2026-08-25 04:12 639232276086186273
34 ms 193.151.156.254
10 2026-08-25 03:56 639232265900986425
43 ms 193.151.156.254
9 2026-08-25 03:38 639232255723518075
25 ms 193.151.156.254
8 2026-08-25 03:22 639232245484452890
27 ms 193.151.156.254
7 2026-08-25 03:04 639232235157175331
96 ms 193.151.156.254
6 2026-08-25 02:11 639232203197189095
105 ms 193.151.156.254
5 2026-08-25 01:54 639232192844564298
49 ms 193.151.156.254
4 2026-08-25 01:37 639232182496008942
62 ms 193.151.156.254
3 2026-08-25 01:19 639232172197053132
16 ms 193.151.156.254
2 2026-08-25 00:26 639232140250307418
29 ms 193.151.156.254
1 2026-08-25 00:09 639232129927860324
58 ms 193.151.156.254