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 2026-08-18. For this date, NameServerHistory found 149 DNS check records, 148 successful responses, 1 failed responses, and 285 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

149

Historical checks stored for this nameserver on selected date

Average Latency

285 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-18 23:45

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

148

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 library.networkhead.com

Showing DNS history for 2026-08-18 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
149 2026-08-18 23:45 639226935204800669
20 ms 172.67.128.129
148 2026-08-18 23:45 639226935204800669
20 ms 104.21.1.41
147 2026-08-18 23:29 639226925298919497
18 ms 172.67.128.129
146 2026-08-18 23:29 639226925298919497
18 ms 104.21.1.41
145 2026-08-18 23:12 639226915487885053
14 ms 172.67.128.129
144 2026-08-18 23:12 639226915487885053
14 ms 104.21.1.41
143 2026-08-18 22:56 639226905465760034
2038 ms 172.67.128.129
142 2026-08-18 22:56 639226905465760034
2038 ms 104.21.1.41
141 2026-08-18 22:39 639226895378104692
39 ms 104.21.1.41
140 2026-08-18 22:39 639226895378104692
39 ms 172.67.128.129
139 2026-08-18 21:46 639226863374232622
17 ms 104.21.1.41
138 2026-08-18 21:46 639226863374232622
17 ms 172.67.128.129
137 2026-08-18 21:29 639226853698516058
2025 ms 172.67.128.129
136 2026-08-18 21:29 639226853698516058
2025 ms 104.21.1.41
135 2026-08-18 21:13 639226843797360601
13 ms 104.21.1.41
134 2026-08-18 21:13 639226843797360601
13 ms 172.67.128.129
133 2026-08-18 20:57 639226834046588155
2045 ms 104.21.1.41
132 2026-08-18 20:57 639226834046588155
2045 ms 172.67.128.129
131 2026-08-18 20:40 639226824234488533
16 ms 172.67.128.129
130 2026-08-18 20:40 639226824234488533
16 ms 104.21.1.41
129 2026-08-18 20:24 639226814549928621
38 ms 104.21.1.41
128 2026-08-18 20:24 639226814549928621
38 ms 172.67.128.129
127 2026-08-18 20:08 639226804721432353
15 ms 172.67.128.129
126 2026-08-18 20:08 639226804721432353
15 ms 104.21.1.41
125 2026-08-18 19:52 639226795048828184
12 ms 172.67.128.129
124 2026-08-18 19:52 639226795048828184
12 ms 104.21.1.41
123 2026-08-18 19:35 639226785202482420
12 ms 172.67.128.129
122 2026-08-18 19:35 639226785202482420
12 ms 104.21.1.41
121 2026-08-18 19:19 639226775309362607
31 ms 172.67.128.129
120 2026-08-18 19:19 639226775309362607
31 ms 104.21.1.41
119 2026-08-18 19:02 639226765406586155
15 ms 172.67.128.129
118 2026-08-18 19:02 639226765406586155
15 ms 104.21.1.41
117 2026-08-18 18:46 639226755437790519
61 ms 104.21.1.41
116 2026-08-18 18:46 639226755437790519
61 ms 172.67.128.129
115 2026-08-18 17:53 639226723856194457
70 ms 104.21.1.41
114 2026-08-18 17:53 639226723856194457
70 ms 172.67.128.129
113 2026-08-18 17:37 639226714050583422
24 ms 104.21.1.41
112 2026-08-18 17:37 639226714050583422
24 ms 172.67.128.129
111 2026-08-18 17:20 639226704236499724
47 ms 172.67.128.129
110 2026-08-18 17:20 639226704236499724
47 ms 104.21.1.41
109 2026-08-18 17:04 639226694184520163
26 ms 172.67.128.129
108 2026-08-18 17:04 639226694184520163
26 ms 104.21.1.41
107 2026-08-18 16:47 639226684161203477
18 ms 172.67.128.129
106 2026-08-18 16:47 639226684161203477
18 ms 104.21.1.41
105 2026-08-18 16:30 639226674305430109
17 ms 172.67.128.129
104 2026-08-18 16:30 639226674305430109
17 ms 104.21.1.41
103 2026-08-18 16:14 639226664489607984
8 ms 104.21.1.41
102 2026-08-18 16:14 639226664489607984
8 ms 172.67.128.129
101 2026-08-18 15:58 639226654533111667
39 ms 172.67.128.129
100 2026-08-18 15:58 639226654533111667
39 ms 104.21.1.41
99 2026-08-18 15:41 639226644778594725
99 ms 172.67.128.129
98 2026-08-18 15:41 639226644778594725
99 ms 104.21.1.41
97 2026-08-18 15:25 639226634901553621
11 ms 172.67.128.129
96 2026-08-18 15:25 639226634901553621
11 ms 104.21.1.41
95 2026-08-18 15:08 639226624921864967
2043 ms 172.67.128.129
94 2026-08-18 15:08 639226624921864967
2043 ms 104.21.1.41
93 2026-08-18 14:52 639226614939419403
2044 ms 172.67.128.129
92 2026-08-18 14:52 639226614939419403
2044 ms 104.21.1.41
91 2026-08-18 13:58 639226583021074771
25 ms 172.67.128.129
90 2026-08-18 13:58 639226583021074771
25 ms 104.21.1.41
89 2026-08-18 13:42 639226573279933585
26 ms 104.21.1.41
88 2026-08-18 13:42 639226573279933585
26 ms 172.67.128.129
87 2026-08-18 13:26 639226563494036301
28 ms 104.21.1.41
86 2026-08-18 13:26 639226563494036301
28 ms 172.67.128.129
85 2026-08-18 13:09 639226553708216256
102 ms 104.21.1.41
84 2026-08-18 13:09 639226553708216256
102 ms 172.67.128.129
83 2026-08-18 12:53 639226544003734815
8 ms 104.21.1.41
82 2026-08-18 12:53 639226544003734815
8 ms 172.67.128.129
81 2026-08-18 12:37 639226534105733155
31 ms 172.67.128.129
80 2026-08-18 12:37 639226534105733155
31 ms 104.21.1.41
79 2026-08-18 12:20 639226524298118898
13 ms 172.67.128.129
78 2026-08-18 12:20 639226524298118898
13 ms 104.21.1.41
77 2026-08-18 12:04 639226514525195335
85 ms 172.67.128.129
76 2026-08-18 12:04 639226514525195335
85 ms 104.21.1.41
75 2026-08-18 11:48 639226504703635320
17 ms 172.67.128.129
74 2026-08-18 11:48 639226504703635320
17 ms 104.21.1.41
73 2026-08-18 11:31 639226494737271720
9 ms 172.67.128.129
72 2026-08-18 11:31 639226494737271720
9 ms 104.21.1.41
71 2026-08-18 11:15 639226485005027236
45 ms 104.21.1.41
70 2026-08-18 11:15 639226485005027236
45 ms 172.67.128.129
69 2026-08-18 10:59 639226475133236105
32 ms 172.67.128.129
68 2026-08-18 10:59 639226475133236105
32 ms 104.21.1.41
67 2026-08-18 10:05 639226442975077052
36 ms 172.67.128.129
66 2026-08-18 10:05 639226442975077052
36 ms 104.21.1.41
65 2026-08-18 09:49 639226433317932039
19 ms 104.21.1.41
64 2026-08-18 09:49 639226433317932039
19 ms 172.67.128.129
63 2026-08-18 09:33 639226423688431096
2031 ms 172.67.128.129
62 2026-08-18 09:33 639226423688431096
2031 ms 104.21.1.41
61 2026-08-18 09:17 639226413998250045
2708 ms 172.67.128.129
60 2026-08-18 09:17 639226413998250045
2708 ms 104.21.1.41
59 2026-08-18 09:00 639226404284554875
50 ms 172.67.128.129
58 2026-08-18 09:00 639226404284554875
50 ms 104.21.1.41
57 2026-08-18 08:44 639226394637043309
2025 ms 172.67.128.129
56 2026-08-18 08:44 639226394637043309
2025 ms 104.21.1.41
55 2026-08-18 08:28 639226385052447582
7 ms 104.21.1.41
54 2026-08-18 08:28 639226385052447582
7 ms 172.67.128.129
53 2026-08-18 08:12 639226375506189603
108 ms 172.67.128.129
52 2026-08-18 08:12 639226375506189603
108 ms 104.21.1.41
51 2026-08-18 07:56 639226365690646426
74 ms 172.67.128.129
50 2026-08-18 07:56 639226365690646426
74 ms 104.21.1.41
49 2026-08-18 07:40 639226355771007701
36 ms 104.21.1.41
48 2026-08-18 07:40 639226355771007701
36 ms 172.67.128.129
47 2026-08-18 07:23 639226345946269369
32 ms 172.67.128.129
46 2026-08-18 07:23 639226345946269369
32 ms 104.21.1.41
45 2026-08-18 07:07 639226336241601848
17 ms 104.21.1.41
44 2026-08-18 07:07 639226336241601848
17 ms 172.67.128.129
43 2026-08-18 06:15 639226304950675290
11 ms 104.21.1.41
42 2026-08-18 06:15 639226304950675290
11 ms 172.67.128.129
41 2026-08-18 05:59 639226295324754616
-
40 2026-08-18 05:43 639226285824640601
17 ms 104.21.1.41
39 2026-08-18 05:43 639226285824640601
17 ms 172.67.128.129
38 2026-08-18 05:27 639226276321223917
18 ms 172.67.128.129
37 2026-08-18 05:27 639226276321223917
18 ms 104.21.1.41
36 2026-08-18 05:11 639226266800200046
17 ms 172.67.128.129
35 2026-08-18 05:11 639226266800200046
17 ms 104.21.1.41
34 2026-08-18 04:55 639226256958066164
35 ms 172.67.128.129
33 2026-08-18 04:55 639226256958066164
35 ms 104.21.1.41
32 2026-08-18 04:39 639226247432364597
73 ms 104.21.1.41
31 2026-08-18 04:39 639226247432364597
73 ms 172.67.128.129
30 2026-08-18 04:23 639226237703388552
29 ms 104.21.1.41
29 2026-08-18 04:23 639226237703388552
29 ms 172.67.128.129
28 2026-08-18 04:07 639226227937569589
24 ms 172.67.128.129
27 2026-08-18 04:07 639226227937569589
24 ms 104.21.1.41
26 2026-08-18 03:50 639226218052465471
14 ms 172.67.128.129
25 2026-08-18 03:50 639226218052465471
14 ms 104.21.1.41
24 2026-08-18 03:34 639226208429623997
15 ms 172.67.128.129
23 2026-08-18 03:34 639226208429623997
15 ms 104.21.1.41
22 2026-08-18 03:18 639226198800675295
2021 ms 172.67.128.129
21 2026-08-18 03:18 639226198800675295
2021 ms 104.21.1.41
20 2026-08-18 02:26 639226167722042574
24 ms 172.67.128.129
19 2026-08-18 02:26 639226167722042574
24 ms 104.21.1.41
18 2026-08-18 02:10 639226158277924383
92 ms 172.67.128.129
17 2026-08-18 02:10 639226158277924383
92 ms 104.21.1.41
16 2026-08-18 01:55 639226148757810592
21 ms 172.67.128.129
15 2026-08-18 01:55 639226148757810592
21 ms 104.21.1.41
14 2026-08-18 01:39 639226139348611045
15 ms 104.21.1.41
13 2026-08-18 01:39 639226139348611045
15 ms 172.67.128.129
12 2026-08-18 01:23 639226129823462907
32 ms 172.67.128.129
11 2026-08-18 01:23 639226129823462907
32 ms 104.21.1.41
10 2026-08-18 01:07 639226120218260005
54 ms 172.67.128.129
9 2026-08-18 01:07 639226120218260005
54 ms 104.21.1.41
8 2026-08-18 00:51 639226110875503904
29 ms 172.67.128.129
7 2026-08-18 00:51 639226110875503904
29 ms 104.21.1.41
6 2026-08-18 00:36 639226101376311912
36 ms 104.21.1.41
5 2026-08-18 00:36 639226101376311912
36 ms 172.67.128.129
4 2026-08-18 00:20 639226091924943492
32 ms 104.21.1.41
3 2026-08-18 00:20 639226091924943492
32 ms 172.67.128.129
2 2026-08-18 00:04 639226082133158124
15 ms 172.67.128.129
1 2026-08-18 00:04 639226082133158124
15 ms 104.21.1.41