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 2026-08-22. For this date, NameServerHistory found 147 DNS check records, 146 successful responses, 1 failed responses, and 223 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

147

Historical checks stored for this nameserver on selected date

Average Latency

223 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-22 23:46

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

146

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 2026-08-22 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
147 2026-08-22 23:46 639230391807229016
27 ms 172.67.128.129
146 2026-08-22 23:46 639230391807229016
27 ms 104.21.1.41
145 2026-08-22 23:30 639230382051619327
15 ms 104.21.1.41
144 2026-08-22 23:30 639230382051619327
15 ms 172.67.128.129
143 2026-08-22 23:14 639230372323353529
6 ms 172.67.128.129
142 2026-08-22 23:14 639230372323353529
6 ms 104.21.1.41
141 2026-08-22 22:58 639230362586451064
9 ms 104.21.1.41
140 2026-08-22 22:58 639230362586451064
9 ms 172.67.128.129
139 2026-08-22 22:41 639230352793666303
22 ms 172.67.128.129
138 2026-08-22 22:41 639230352793666303
22 ms 104.21.1.41
137 2026-08-22 22:25 639230342775737758
17 ms 172.67.128.129
136 2026-08-22 22:25 639230342775737758
17 ms 104.21.1.41
135 2026-08-22 22:08 639230332639939561
46 ms 172.67.128.129
134 2026-08-22 22:08 639230332639939561
46 ms 104.21.1.41
133 2026-08-22 21:15 639230301014190104
40 ms 104.21.1.41
132 2026-08-22 21:15 639230301014190104
40 ms 172.67.128.129
131 2026-08-22 20:58 639230291048161498
13 ms 104.21.1.41
130 2026-08-22 20:58 639230291048161498
13 ms 172.67.128.129
129 2026-08-22 20:41 639230280894353664
36 ms 172.67.128.129
128 2026-08-22 20:41 639230280894353664
36 ms 104.21.1.41
127 2026-08-22 20:24 639230270699419073
2028 ms 104.21.1.41
126 2026-08-22 20:24 639230270699419073
2028 ms 172.67.128.129
125 2026-08-22 20:07 639230260248163050
45 ms 104.21.1.41
124 2026-08-22 20:07 639230260248163050
45 ms 172.67.128.129
123 2026-08-22 19:50 639230250122494282
10 ms 172.67.128.129
122 2026-08-22 19:50 639230250122494282
10 ms 104.21.1.41
121 2026-08-22 19:33 639230239972935046
41 ms 104.21.1.41
120 2026-08-22 19:33 639230239972935046
41 ms 172.67.128.129
119 2026-08-22 19:17 639230229963262464
42 ms 104.21.1.41
118 2026-08-22 19:17 639230229963262464
42 ms 172.67.128.129
117 2026-08-22 19:00 639230220033804658
2025 ms 172.67.128.129
116 2026-08-22 19:00 639230220033804658
2025 ms 104.21.1.41
115 2026-08-22 18:43 639230209891107289
50 ms 172.67.128.129
114 2026-08-22 18:43 639230209891107289
50 ms 104.21.1.41
113 2026-08-22 18:26 639230199630298717
9 ms 104.21.1.41
112 2026-08-22 18:26 639230199630298717
9 ms 172.67.128.129
111 2026-08-22 18:09 639230189301984150
35 ms 172.67.128.129
110 2026-08-22 18:09 639230189301984150
35 ms 104.21.1.41
109 2026-08-22 17:15 639230157138468804
16 ms 104.21.1.41
108 2026-08-22 17:15 639230157138468804
16 ms 172.67.128.129
107 2026-08-22 16:58 639230146987869495
44 ms 104.21.1.41
106 2026-08-22 16:58 639230146987869495
44 ms 172.67.128.129
105 2026-08-22 16:41 639230136768638516
23 ms 172.67.128.129
104 2026-08-22 16:41 639230136768638516
23 ms 104.21.1.41
103 2026-08-22 16:25 639230126735907877
22 ms 104.21.1.41
102 2026-08-22 16:25 639230126735907877
22 ms 172.67.128.129
101 2026-08-22 16:08 639230116551187768
81 ms 104.21.1.41
100 2026-08-22 16:08 639230116551187768
81 ms 172.67.128.129
99 2026-08-22 15:51 639230106335615913
17 ms 172.67.128.129
98 2026-08-22 15:51 639230106335615913
17 ms 104.21.1.41
97 2026-08-22 15:34 639230096177758176
11 ms 172.67.128.129
96 2026-08-22 15:34 639230096177758176
11 ms 104.21.1.41
95 2026-08-22 15:17 639230086185999993
10 ms 104.21.1.41
94 2026-08-22 15:17 639230086185999993
10 ms 172.67.128.129
93 2026-08-22 15:00 639230076247854903
2051 ms 172.67.128.129
92 2026-08-22 15:00 639230076247854903
2051 ms 104.21.1.41
91 2026-08-22 14:44 639230066076077530
-
90 2026-08-22 14:26 639230055738197328
2144 ms 172.67.128.129
89 2026-08-22 14:26 639230055738197328
2144 ms 104.21.1.41
88 2026-08-22 14:09 639230045411225521
19 ms 172.67.128.129
87 2026-08-22 14:09 639230045411225521
19 ms 104.21.1.41
86 2026-08-22 13:15 639230013046000470
20 ms 104.21.1.41
85 2026-08-22 13:15 639230013046000470
20 ms 172.67.128.129
84 2026-08-22 12:58 639230003090037878
12 ms 172.67.128.129
83 2026-08-22 12:58 639230003090037878
12 ms 104.21.1.41
82 2026-08-22 12:42 639229993008259475
106 ms 172.67.128.129
81 2026-08-22 12:42 639229993008259475
106 ms 104.21.1.41
80 2026-08-22 12:25 639229982909449470
31 ms 172.67.128.129
79 2026-08-22 12:25 639229982909449470
31 ms 104.21.1.41
78 2026-08-22 12:08 639229973035502212
36 ms 172.67.128.129
77 2026-08-22 12:08 639229973035502212
36 ms 104.21.1.41
76 2026-08-22 11:52 639229963064296145
20 ms 104.21.1.41
75 2026-08-22 11:52 639229963064296145
20 ms 172.67.128.129
74 2026-08-22 11:35 639229952996162143
43 ms 172.67.128.129
73 2026-08-22 11:35 639229952996162143
43 ms 104.21.1.41
72 2026-08-22 11:18 639229943051949195
34 ms 172.67.128.129
71 2026-08-22 11:18 639229943051949195
34 ms 104.21.1.41
70 2026-08-22 11:01 639229932919214934
34 ms 104.21.1.41
69 2026-08-22 11:01 639229932919214934
34 ms 172.67.128.129
68 2026-08-22 10:45 639229922745889838
55 ms 172.67.128.129
67 2026-08-22 10:45 639229922745889838
55 ms 104.21.1.41
66 2026-08-22 10:28 639229912587214796
18 ms 104.21.1.41
65 2026-08-22 10:28 639229912587214796
18 ms 172.67.128.129
64 2026-08-22 10:10 639229902240004454
16 ms 104.21.1.41
63 2026-08-22 10:10 639229902240004454
16 ms 172.67.128.129
62 2026-08-22 09:18 639229870800501662
14 ms 104.21.1.41
61 2026-08-22 09:18 639229870800501662
14 ms 172.67.128.129
60 2026-08-22 09:02 639229861058384956
27 ms 104.21.1.41
59 2026-08-22 09:02 639229861058384956
27 ms 172.67.128.129
58 2026-08-22 08:45 639229851158592604
24 ms 104.21.1.41
57 2026-08-22 08:45 639229851158592604
24 ms 172.67.128.129
56 2026-08-22 08:29 639229841475569629
45 ms 104.21.1.41
55 2026-08-22 08:29 639229841475569629
45 ms 172.67.128.129
54 2026-08-22 08:13 639229831887658471
19 ms 172.67.128.129
53 2026-08-22 08:13 639229831887658471
19 ms 104.21.1.41
52 2026-08-22 07:57 639229822043670346
78 ms 104.21.1.41
51 2026-08-22 07:57 639229822043670346
78 ms 172.67.128.129
50 2026-08-22 07:40 639229812327913936
7 ms 172.67.128.129
49 2026-08-22 07:40 639229812327913936
7 ms 104.21.1.41
48 2026-08-22 07:24 639229802629488686
32 ms 104.21.1.41
47 2026-08-22 07:24 639229802629488686
32 ms 172.67.128.129
46 2026-08-22 07:08 639229793051447309
12 ms 172.67.128.129
45 2026-08-22 07:08 639229793051447309
12 ms 104.21.1.41
44 2026-08-22 06:52 639229783303531961
11 ms 172.67.128.129
43 2026-08-22 06:52 639229783303531961
11 ms 104.21.1.41
42 2026-08-22 06:36 639229773458051942
7 ms 172.67.128.129
41 2026-08-22 06:36 639229773458051942
7 ms 104.21.1.41
40 2026-08-22 06:19 639229763373848056
9 ms 172.67.128.129
39 2026-08-22 06:19 639229763373848056
9 ms 104.21.1.41
38 2026-08-22 05:27 639229732140622809
54 ms 104.21.1.41
37 2026-08-22 05:27 639229732140622809
54 ms 172.67.128.129
36 2026-08-22 05:11 639229722699695967
5 ms 104.21.1.41
35 2026-08-22 05:11 639229722699695967
5 ms 172.67.128.129
34 2026-08-22 04:55 639229713097498075
78 ms 172.67.128.129
33 2026-08-22 04:55 639229713097498075
78 ms 104.21.1.41
32 2026-08-22 04:39 639229703543969637
2034 ms 104.21.1.41
31 2026-08-22 04:39 639229703543969637
2034 ms 172.67.128.129
30 2026-08-22 04:23 639229693970392873
39 ms 172.67.128.129
29 2026-08-22 04:23 639229693970392873
39 ms 104.21.1.41
28 2026-08-22 04:07 639229684277329469
11 ms 172.67.128.129
27 2026-08-22 04:07 639229684277329469
11 ms 104.21.1.41
26 2026-08-22 03:51 639229674501596661
5 ms 172.67.128.129
25 2026-08-22 03:51 639229674501596661
5 ms 104.21.1.41
24 2026-08-22 03:35 639229665064441147
2056 ms 172.67.128.129
23 2026-08-22 03:35 639229665064441147
2056 ms 104.21.1.41
22 2026-08-22 03:19 639229655507536872
26 ms 172.67.128.129
21 2026-08-22 03:19 639229655507536872
26 ms 104.21.1.41
20 2026-08-22 03:03 639229645849603111
32 ms 104.21.1.41
19 2026-08-22 03:03 639229645849603111
32 ms 172.67.128.129
18 2026-08-22 02:47 639229636090497453
37 ms 104.21.1.41
17 2026-08-22 02:47 639229636090497453
37 ms 172.67.128.129
16 2026-08-22 02:30 639229625978544281
22 ms 172.67.128.129
15 2026-08-22 02:30 639229625978544281
22 ms 104.21.1.41
14 2026-08-22 01:38 639229594644662176
19 ms 172.67.128.129
13 2026-08-22 01:38 639229594644662176
19 ms 104.21.1.41
12 2026-08-22 01:22 639229585214633065
2025 ms 172.67.128.129
11 2026-08-22 01:22 639229585214633065
2025 ms 104.21.1.41
10 2026-08-22 01:06 639229575581042175
22 ms 104.21.1.41
9 2026-08-22 01:06 639229575581042175
22 ms 172.67.128.129
8 2026-08-22 00:50 639229565912268962
24 ms 104.21.1.41
7 2026-08-22 00:50 639229565912268962
24 ms 172.67.128.129
6 2026-08-22 00:34 639229556237813203
28 ms 172.67.128.129
5 2026-08-22 00:34 639229556237813203
28 ms 104.21.1.41
4 2026-08-22 00:18 639229546625802518
29 ms 104.21.1.41
3 2026-08-22 00:18 639229546625802518
29 ms 172.67.128.129
2 2026-08-22 00:02 639229537172016621
42 ms 172.67.128.129
1 2026-08-22 00:02 639229537172016621
42 ms 104.21.1.41