DNS response history for library.networkhead.com

library.networkhead.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 2026-08-20. For this date, NameServerHistory found 114 DNS check records, 114 successful responses, 0 failed responses, and 211 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 library.networkhead.com.
Records on Selected Date

114

Historical checks stored for this nameserver on selected date

Average Latency

211 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-20 23:58

All timestamps shown in UTC

Latest Resolved IP on Selected Date

172.67.128.129

Most recently resolved hosting IP on selected date

Successful Responses

114

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 library.networkhead.com

Showing DNS history for 2026-08-20 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
114 2026-08-20 23:58 639228670775860800
69 ms 172.67.128.129
113 2026-08-20 23:58 639228670775860800
69 ms 104.21.1.41
112 2026-08-20 23:06 639228639850033448
41 ms 172.67.128.129
111 2026-08-20 23:06 639228639850033448
41 ms 104.21.1.41
110 2026-08-20 22:50 639228630204271870
101 ms 104.21.1.41
109 2026-08-20 22:50 639228630204271870
101 ms 172.67.128.129
108 2026-08-20 22:34 639228620295091135
16 ms 172.67.128.129
107 2026-08-20 22:34 639228620295091135
16 ms 104.21.1.41
106 2026-08-20 22:17 639228610298336915
26 ms 104.21.1.41
105 2026-08-20 22:17 639228610298336915
26 ms 172.67.128.129
104 2026-08-20 21:25 639228578917047616
8 ms 172.67.128.129
103 2026-08-20 21:25 639228578917047616
8 ms 104.21.1.41
102 2026-08-20 21:08 639228569046445709
2055 ms 172.67.128.129
101 2026-08-20 21:08 639228569046445709
2055 ms 104.21.1.41
100 2026-08-20 20:52 639228558946830986
33 ms 172.67.128.129
99 2026-08-20 20:52 639228558946830986
33 ms 104.21.1.41
98 2026-08-20 20:35 639228548977359217
102 ms 104.21.1.41
97 2026-08-20 20:35 639228548977359217
102 ms 172.67.128.129
96 2026-08-20 19:42 639228517494157668
17 ms 172.67.128.129
95 2026-08-20 19:42 639228517494157668
17 ms 104.21.1.41
94 2026-08-20 19:26 639228507374116892
90 ms 104.21.1.41
93 2026-08-20 19:26 639228507374116892
90 ms 172.67.128.129
92 2026-08-20 19:09 639228497315154893
127 ms 104.21.1.41
91 2026-08-20 19:09 639228497315154893
127 ms 172.67.128.129
90 2026-08-20 18:52 639228487287648341
2062 ms 104.21.1.41
89 2026-08-20 18:52 639228487287648341
2062 ms 172.67.128.129
88 2026-08-20 18:00 639228455828123788
33 ms 104.21.1.41
87 2026-08-20 18:00 639228455828123788
33 ms 172.67.128.129
86 2026-08-20 17:43 639228445900082244
71 ms 104.21.1.41
85 2026-08-20 17:43 639228445900082244
71 ms 172.67.128.129
84 2026-08-20 17:26 639228435866352323
73 ms 172.67.128.129
83 2026-08-20 17:26 639228435866352323
73 ms 104.21.1.41
82 2026-08-20 17:10 639228425802273151
40 ms 104.21.1.41
81 2026-08-20 17:10 639228425802273151
40 ms 172.67.128.129
80 2026-08-20 16:16 639228393616324230
13 ms 104.21.1.41
79 2026-08-20 16:16 639228393616324230
13 ms 172.67.128.129
78 2026-08-20 15:59 639228383590408693
25 ms 104.21.1.41
77 2026-08-20 15:59 639228383590408693
25 ms 172.67.128.129
76 2026-08-20 15:42 639228373471467474
41 ms 104.21.1.41
75 2026-08-20 15:42 639228373471467474
41 ms 172.67.128.129
74 2026-08-20 15:26 639228363426647311
22 ms 172.67.128.129
73 2026-08-20 15:26 639228363426647311
22 ms 104.21.1.41
72 2026-08-20 14:33 639228331681701910
31 ms 104.21.1.41
71 2026-08-20 14:33 639228331681701910
31 ms 172.67.128.129
70 2026-08-20 14:16 639228321714746824
42 ms 104.21.1.41
69 2026-08-20 14:16 639228321714746824
42 ms 172.67.128.129
68 2026-08-20 13:59 639228311652090262
15 ms 104.21.1.41
67 2026-08-20 13:59 639228311652090262
15 ms 172.67.128.129
66 2026-08-20 13:43 639228301670088587
36 ms 104.21.1.41
65 2026-08-20 13:43 639228301670088587
36 ms 172.67.128.129
64 2026-08-20 12:50 639228269987976710
10 ms 104.21.1.41
63 2026-08-20 12:50 639228269987976710
10 ms 172.67.128.129
62 2026-08-20 12:33 639228260009452308
13 ms 172.67.128.129
61 2026-08-20 12:33 639228260009452308
13 ms 104.21.1.41
60 2026-08-20 12:16 639228249661740894
73 ms 104.21.1.41
59 2026-08-20 12:16 639228249661740894
73 ms 172.67.128.129
58 2026-08-20 11:59 639228239552680346
19 ms 172.67.128.129
57 2026-08-20 11:59 639228239552680346
19 ms 104.21.1.41
56 2026-08-20 11:06 639228207667580819
80 ms 104.21.1.41
55 2026-08-20 11:06 639228207667580819
80 ms 172.67.128.129
54 2026-08-20 10:49 639228197494011560
15 ms 172.67.128.129
53 2026-08-20 10:49 639228197494011560
15 ms 104.21.1.41
52 2026-08-20 10:32 639228187497039939
24 ms 104.21.1.41
51 2026-08-20 10:32 639228187497039939
24 ms 172.67.128.129
50 2026-08-20 10:16 639228177408432646
47 ms 104.21.1.41
49 2026-08-20 10:16 639228177408432646
47 ms 172.67.128.129
48 2026-08-20 09:24 639228146356166262
4081 ms 104.21.1.41
47 2026-08-20 09:24 639228146356166262
4081 ms 172.67.128.129
46 2026-08-20 09:08 639228136541505712
35 ms 172.67.128.129
45 2026-08-20 09:08 639228136541505712
35 ms 104.21.1.41
44 2026-08-20 08:51 639228126519136598
16 ms 172.67.128.129
43 2026-08-20 08:51 639228126519136598
16 ms 104.21.1.41
42 2026-08-20 08:34 639228116537148885
9 ms 172.67.128.129
41 2026-08-20 08:34 639228116537148885
9 ms 104.21.1.41
40 2026-08-20 07:42 639228085320764351
25 ms 172.67.128.129
39 2026-08-20 07:42 639228085320764351
25 ms 104.21.1.41
38 2026-08-20 07:26 639228075444604839
28 ms 172.67.128.129
37 2026-08-20 07:26 639228075444604839
28 ms 104.21.1.41
36 2026-08-20 07:09 639228065615498985
38 ms 104.21.1.41
35 2026-08-20 07:09 639228065615498985
38 ms 172.67.128.129
34 2026-08-20 06:53 639228055675321422
8 ms 104.21.1.41
33 2026-08-20 06:53 639228055675321422
8 ms 172.67.128.129
32 2026-08-20 06:00 639228024230839396
5 ms 104.21.1.41
31 2026-08-20 06:00 639228024230839396
5 ms 172.67.128.129
30 2026-08-20 05:44 639228014720406505
20 ms 172.67.128.129
29 2026-08-20 05:44 639228014720406505
20 ms 104.21.1.41
28 2026-08-20 05:28 639228004930827030
20 ms 104.21.1.41
27 2026-08-20 05:28 639228004930827030
20 ms 172.67.128.129
26 2026-08-20 05:12 639227995103340154
12 ms 104.21.1.41
25 2026-08-20 05:12 639227995103340154
12 ms 172.67.128.129
24 2026-08-20 04:20 639227963811374894
15 ms 104.21.1.41
23 2026-08-20 04:20 639227963811374894
15 ms 172.67.128.129
22 2026-08-20 04:03 639227954132571365
15 ms 104.21.1.41
21 2026-08-20 04:03 639227954132571365
15 ms 172.67.128.129
20 2026-08-20 03:48 639227944541208342
27 ms 172.67.128.129
19 2026-08-20 03:48 639227944541208342
27 ms 104.21.1.41
18 2026-08-20 03:31 639227934657213484
44 ms 104.21.1.41
17 2026-08-20 03:31 639227934657213484
44 ms 172.67.128.129
16 2026-08-20 02:39 639227903628145469
16 ms 172.67.128.129
15 2026-08-20 02:39 639227903628145469
16 ms 104.21.1.41
14 2026-08-20 02:23 639227893995483475
9 ms 104.21.1.41
13 2026-08-20 02:23 639227893995483475
9 ms 172.67.128.129
12 2026-08-20 02:07 639227884280244209
2039 ms 104.21.1.41
11 2026-08-20 02:07 639227884280244209
2039 ms 172.67.128.129
10 2026-08-20 01:51 639227874371147132
7 ms 172.67.128.129
9 2026-08-20 01:51 639227874371147132
7 ms 104.21.1.41
8 2026-08-20 00:59 639227843224256432
24 ms 104.21.1.41
7 2026-08-20 00:59 639227843224256432
24 ms 172.67.128.129
6 2026-08-20 00:43 639227833720403506
8 ms 172.67.128.129
5 2026-08-20 00:43 639227833720403506
8 ms 104.21.1.41
4 2026-08-20 00:27 639227824170728278
22 ms 172.67.128.129
3 2026-08-20 00:27 639227824170728278
22 ms 104.21.1.41
2 2026-08-20 00:11 639227814865867570
32 ms 104.21.1.41
1 2026-08-20 00:11 639227814865867570
32 ms 172.67.128.129