DNS response history for ns4.libsyn.com

ns4.libsyn.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 73 DNS check records, 72 successful responses, 1 failed responses, and 195 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.libsyn.com.
Records on Selected Date

73

Historical checks stored for this nameserver on selected date

Average Latency

195 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-21 23:49

All timestamps shown in UTC

Latest Resolved IP on Selected Date

199.247.155.53

Most recently resolved hosting IP on selected date

Successful Responses

72

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

1%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns4.libsyn.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
73 2026-08-21 23:49 639229527598660841
26 ms 199.247.155.53
72 2026-08-21 23:33 639229517954323214
21 ms 199.247.155.53
71 2026-08-21 23:16 639229508269999021
10 ms 199.247.155.53
70 2026-08-21 23:00 639229498559060171
12 ms 199.247.155.53
69 2026-08-21 22:44 639229488519347586
-
68 2026-08-21 21:50 639229456606578934
3 ms 199.247.155.53
67 2026-08-21 21:34 639229446985772499
19 ms 199.247.155.53
66 2026-08-21 21:18 639229437367313098
26 ms 199.247.155.53
65 2026-08-21 21:02 639229427923950391
12 ms 199.247.155.53
64 2026-08-21 20:46 639229418168588854
19 ms 199.247.155.53
63 2026-08-21 20:30 639229408345678334
7 ms 199.247.155.53
62 2026-08-21 20:14 639229398616354648
3 ms 199.247.155.53
61 2026-08-21 19:57 639229388634592323
26 ms 199.247.155.53
60 2026-08-21 19:41 639229378792837692
4039 ms 199.247.155.53
59 2026-08-21 19:25 639229369154682311
39 ms 199.247.155.53
58 2026-08-21 19:08 639229359248017926
42 ms 199.247.155.53
57 2026-08-21 18:51 639229349124294642
10 ms 199.247.155.53
56 2026-08-21 17:59 639229317791715692
12 ms 199.247.155.53
55 2026-08-21 17:43 639229308115194575
16 ms 199.247.155.53
54 2026-08-21 17:26 639229298320320558
35 ms 199.247.155.53
53 2026-08-21 17:10 639229288674863221
14 ms 199.247.155.53
52 2026-08-21 16:54 639229278983677079
33 ms 199.247.155.53
51 2026-08-21 16:38 639229269405517175
24 ms 199.247.155.53
50 2026-08-21 16:22 639229259594798244
349 ms 199.247.155.53
49 2026-08-21 16:06 639229249736681188
35 ms 199.247.155.53
48 2026-08-21 15:49 639229239699417787
45 ms 199.247.155.53
47 2026-08-21 15:32 639229229621964033
18 ms 199.247.155.53
46 2026-08-21 15:15 639229219567270965
12 ms 199.247.155.53
45 2026-08-21 14:58 639229209406666856
17 ms 199.247.155.53
44 2026-08-21 14:06 639229177815876178
35 ms 199.247.155.53
43 2026-08-21 13:50 639229168243572685
5 ms 199.247.155.53
42 2026-08-21 13:34 639229158599856475
21 ms 199.247.155.53
41 2026-08-21 13:18 639229148998940902
3 ms 199.247.155.53
40 2026-08-21 13:01 639229139276923594
27 ms 199.247.155.53
39 2026-08-21 12:45 639229129709912394
14 ms 199.247.155.53
38 2026-08-21 12:29 639229119801488500
47 ms 199.247.155.53
37 2026-08-21 12:13 639229110135262458
12 ms 199.247.155.53
36 2026-08-21 11:57 639229100336051392
53 ms 199.247.155.53
35 2026-08-21 11:40 639229090641415626
29 ms 199.247.155.53
34 2026-08-21 11:24 639229080702683947
20 ms 199.247.155.53
33 2026-08-21 11:07 639229070601456699
12 ms 199.247.155.53
32 2026-08-21 10:14 639229038947447232
19 ms 199.247.155.53
31 2026-08-21 09:58 639229029268708773
19 ms 199.247.155.53
30 2026-08-21 09:42 639229019647910603
30 ms 199.247.155.53
29 2026-08-21 09:26 639229009983843738
11 ms 199.247.155.53
28 2026-08-21 09:10 639229000203331882
2016 ms 199.247.155.53
27 2026-08-21 08:53 639228990302335999
25 ms 199.247.155.53
26 2026-08-21 08:37 639228980567740722
12 ms 199.247.155.53
25 2026-08-21 08:21 639228970762445174
38 ms 199.247.155.53
24 2026-08-21 08:04 639228961065054445
2029 ms 199.247.155.53
23 2026-08-21 07:48 639228951224649885
2241 ms 199.247.155.53
22 2026-08-21 07:32 639228941303864592
13 ms 199.247.155.53
21 2026-08-21 07:15 639228931191328583
21 ms 199.247.155.53
20 2026-08-21 06:22 639228899518173317
36 ms 199.247.155.53
19 2026-08-21 06:06 639228889785027669
11 ms 199.247.155.53
18 2026-08-21 05:50 639228880106330161
6 ms 199.247.155.53
17 2026-08-21 05:33 639228870316184091
34 ms 199.247.155.53
16 2026-08-21 05:17 639228860695366512
19 ms 199.247.155.53
15 2026-08-21 05:01 639228851027209500
11 ms 199.247.155.53
14 2026-08-21 04:45 639228841479265462
22 ms 199.247.155.53
13 2026-08-21 04:29 639228831752962260
39 ms 199.247.155.53
12 2026-08-21 04:13 639228821953295483
34 ms 199.247.155.53
11 2026-08-21 03:56 639228812227429953
16 ms 199.247.155.53
10 2026-08-21 03:40 639228802476107538
4 ms 199.247.155.53
9 2026-08-21 03:24 639228792525492032
23 ms 199.247.155.53
8 2026-08-21 02:31 639228761131421385
10 ms 199.247.155.53
7 2026-08-21 02:15 639228751571206692
3 ms 199.247.155.53
6 2026-08-21 01:59 639228741705571019
19 ms 199.247.155.53
5 2026-08-21 01:42 639228731642208228
32 ms 199.247.155.53
4 2026-08-21 00:50 639228700387002072
49 ms 199.247.155.53
3 2026-08-21 00:34 639228690742014433
12 ms 199.247.155.53
2 2026-08-21 00:17 639228680877937122
12 ms 199.247.155.53
1 2026-08-21 00:01 639228670775860800
2007 ms 199.247.155.53