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 2026-08-23. For this date, NameServerHistory found 147 DNS check records, 144 successful responses, 3 failed responses, and 140 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

140 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-23 23:44

All timestamps shown in UTC

Latest Resolved IP on Selected Date

104.21.1.41

Most recently resolved hosting IP on selected date

Successful Responses

144

Checks that returned a measurable response

Failed Responses

3

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 library.networkhead.com

Showing DNS history for 2026-08-23 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 2026-08-23 23:44 639231254406598736
22 ms 104.21.1.41
146 2026-08-23 23:44 639231254406598736
22 ms 172.67.128.129
145 2026-08-23 23:28 639231244697865594
53 ms 172.67.128.129
144 2026-08-23 23:28 639231244697865594
53 ms 104.21.1.41
143 2026-08-23 23:12 639231234893504693
-
142 2026-08-23 22:55 639231225024549139
18 ms 172.67.128.129
141 2026-08-23 22:55 639231225024549139
18 ms 104.21.1.41
140 2026-08-23 22:38 639231214931957622
11 ms 172.67.128.129
139 2026-08-23 22:38 639231214931957622
11 ms 104.21.1.41
138 2026-08-23 22:22 639231204962010549
63 ms 172.67.128.129
137 2026-08-23 22:22 639231204962010549
63 ms 104.21.1.41
136 2026-08-23 22:05 639231195170138463
15 ms 104.21.1.41
135 2026-08-23 22:05 639231195170138463
15 ms 172.67.128.129
134 2026-08-23 21:49 639231185235020577
6 ms 104.21.1.41
133 2026-08-23 21:49 639231185235020577
6 ms 172.67.128.129
132 2026-08-23 21:33 639231175558690075
33 ms 172.67.128.129
131 2026-08-23 21:33 639231175558690075
33 ms 104.21.1.41
130 2026-08-23 21:16 639231165610444012
37 ms 172.67.128.129
129 2026-08-23 21:16 639231165610444012
37 ms 104.21.1.41
128 2026-08-23 20:23 639231133806425363
22 ms 172.67.128.129
127 2026-08-23 20:23 639231133806425363
22 ms 104.21.1.41
126 2026-08-23 20:07 639231124203758023
9 ms 172.67.128.129
125 2026-08-23 20:07 639231124203758023
9 ms 104.21.1.41
124 2026-08-23 19:51 639231114428262706
4037 ms 104.21.1.41
123 2026-08-23 19:51 639231114428262706
4037 ms 172.67.128.129
122 2026-08-23 19:34 639231104662480065
93 ms 172.67.128.129
121 2026-08-23 19:34 639231104662480065
93 ms 104.21.1.41
120 2026-08-23 19:18 639231094840372018
32 ms 172.67.128.129
119 2026-08-23 19:18 639231094840372018
32 ms 104.21.1.41
118 2026-08-23 19:02 639231085024583224
35 ms 172.67.128.129
117 2026-08-23 19:02 639231085024583224
35 ms 104.21.1.41
116 2026-08-23 18:45 639231075257417427
9 ms 104.21.1.41
115 2026-08-23 18:45 639231075257417427
9 ms 172.67.128.129
114 2026-08-23 18:29 639231065516009503
14 ms 104.21.1.41
113 2026-08-23 18:29 639231065516009503
14 ms 172.67.128.129
112 2026-08-23 18:13 639231055805348837
32 ms 172.67.128.129
111 2026-08-23 18:13 639231055805348837
32 ms 104.21.1.41
110 2026-08-23 17:57 639231045980373765
46 ms 172.67.128.129
109 2026-08-23 17:57 639231045980373765
46 ms 104.21.1.41
108 2026-08-23 17:40 639231035984577527
22 ms 172.67.128.129
107 2026-08-23 17:40 639231035984577527
22 ms 104.21.1.41
106 2026-08-23 17:23 639231025928115303
17 ms 172.67.128.129
105 2026-08-23 17:23 639231025928115303
17 ms 104.21.1.41
104 2026-08-23 16:30 639230994250157583
26 ms 172.67.128.129
103 2026-08-23 16:30 639230994250157583
26 ms 104.21.1.41
102 2026-08-23 16:14 639230984476411369
120 ms 172.67.128.129
101 2026-08-23 16:14 639230984476411369
120 ms 104.21.1.41
100 2026-08-23 15:58 639230974838373450
8 ms 104.21.1.41
99 2026-08-23 15:58 639230974838373450
8 ms 172.67.128.129
98 2026-08-23 15:42 639230965244277645
72 ms 104.21.1.41
97 2026-08-23 15:42 639230965244277645
72 ms 172.67.128.129
96 2026-08-23 15:26 639230955522101820
8 ms 104.21.1.41
95 2026-08-23 15:26 639230955522101820
8 ms 172.67.128.129
94 2026-08-23 15:10 639230945754521603
10 ms 172.67.128.129
93 2026-08-23 15:10 639230945754521603
10 ms 104.21.1.41
92 2026-08-23 14:53 639230935852040504
22 ms 172.67.128.129
91 2026-08-23 14:53 639230935852040504
22 ms 104.21.1.41
90 2026-08-23 14:37 639230926222061048
12 ms 172.67.128.129
89 2026-08-23 14:37 639230926222061048
12 ms 104.21.1.41
88 2026-08-23 14:21 639230916449726907
32 ms 172.67.128.129
87 2026-08-23 14:21 639230916449726907
32 ms 104.21.1.41
86 2026-08-23 14:04 639230906595053086
19 ms 104.21.1.41
85 2026-08-23 14:04 639230906595053086
19 ms 172.67.128.129
84 2026-08-23 13:48 639230896680429441
2027 ms 104.21.1.41
83 2026-08-23 13:48 639230896680429441
2027 ms 172.67.128.129
82 2026-08-23 13:31 639230886630210965
32 ms 172.67.128.129
81 2026-08-23 13:31 639230886630210965
32 ms 104.21.1.41
80 2026-08-23 12:39 639230855430405719
39 ms 172.67.128.129
79 2026-08-23 12:39 639230855430405719
39 ms 104.21.1.41
78 2026-08-23 12:23 639230845707499136
22 ms 104.21.1.41
77 2026-08-23 12:23 639230845707499136
22 ms 172.67.128.129
76 2026-08-23 12:07 639230836186805419
43 ms 172.67.128.129
75 2026-08-23 12:07 639230836186805419
43 ms 104.21.1.41
74 2026-08-23 11:51 639230826493828316
10 ms 104.21.1.41
73 2026-08-23 11:51 639230826493828316
10 ms 172.67.128.129
72 2026-08-23 11:35 639230816817882996
8 ms 172.67.128.129
71 2026-08-23 11:35 639230816817882996
8 ms 104.21.1.41
70 2026-08-23 11:18 639230806933854189
9 ms 104.21.1.41
69 2026-08-23 11:18 639230806933854189
9 ms 172.67.128.129
68 2026-08-23 11:02 639230797120243854
22 ms 104.21.1.41
67 2026-08-23 11:02 639230797120243854
22 ms 172.67.128.129
66 2026-08-23 10:45 639230787310272840
32 ms 172.67.128.129
65 2026-08-23 10:45 639230787310272840
32 ms 104.21.1.41
64 2026-08-23 10:29 639230777600173142
11 ms 104.21.1.41
63 2026-08-23 10:29 639230777600173142
11 ms 172.67.128.129
62 2026-08-23 10:13 639230767665024593
25 ms 172.67.128.129
61 2026-08-23 10:13 639230767665024593
25 ms 104.21.1.41
60 2026-08-23 09:56 639230757720962293
8 ms 172.67.128.129
59 2026-08-23 09:56 639230757720962293
8 ms 104.21.1.41
58 2026-08-23 09:40 639230747722189784
39 ms 172.67.128.129
57 2026-08-23 09:40 639230747722189784
39 ms 104.21.1.41
56 2026-08-23 08:47 639230716313923480
24 ms 172.67.128.129
55 2026-08-23 08:47 639230716313923480
24 ms 104.21.1.41
54 2026-08-23 08:31 639230706813835990
50 ms 172.67.128.129
53 2026-08-23 08:31 639230706813835990
50 ms 104.21.1.41
52 2026-08-23 08:15 639230696871062203
8 ms 172.67.128.129
51 2026-08-23 08:15 639230696871062203
8 ms 104.21.1.41
50 2026-08-23 07:59 639230687142781616
82 ms 104.21.1.41
49 2026-08-23 07:59 639230687142781616
82 ms 172.67.128.129
48 2026-08-23 07:42 639230677432142227
25 ms 104.21.1.41
47 2026-08-23 07:42 639230677432142227
25 ms 172.67.128.129
46 2026-08-23 07:26 639230667686258061
14 ms 172.67.128.129
45 2026-08-23 07:26 639230667686258061
14 ms 104.21.1.41
44 2026-08-23 07:10 639230658039243685
13 ms 104.21.1.41
43 2026-08-23 07:10 639230658039243685
13 ms 172.67.128.129
42 2026-08-23 06:54 639230648468473803
27 ms 172.67.128.129
41 2026-08-23 06:54 639230648468473803
27 ms 104.21.1.41
40 2026-08-23 06:38 639230638829658294
42 ms 104.21.1.41
39 2026-08-23 06:38 639230638829658294
42 ms 172.67.128.129
38 2026-08-23 06:22 639230629247017617
53 ms 172.67.128.129
37 2026-08-23 06:22 639230629247017617
53 ms 104.21.1.41
36 2026-08-23 06:06 639230619625318239
9 ms 104.21.1.41
35 2026-08-23 06:06 639230619625318239
9 ms 172.67.128.129
34 2026-08-23 05:50 639230609697630264
-
33 2026-08-23 04:58 639230578570131864
14 ms 172.67.128.129
32 2026-08-23 04:58 639230578570131864
14 ms 104.21.1.41
31 2026-08-23 04:42 639230568958963168
14 ms 172.67.128.129
30 2026-08-23 04:42 639230568958963168
14 ms 104.21.1.41
29 2026-08-23 04:25 639230559287611211
14 ms 172.67.128.129
28 2026-08-23 04:25 639230559287611211
14 ms 104.21.1.41
27 2026-08-23 04:09 639230549524312030
92 ms 172.67.128.129
26 2026-08-23 04:09 639230549524312030
92 ms 104.21.1.41
25 2026-08-23 03:53 639230539739801669
14 ms 104.21.1.41
24 2026-08-23 03:53 639230539739801669
14 ms 172.67.128.129
23 2026-08-23 03:37 639230530084069375
-
22 2026-08-23 03:21 639230520362691441
10 ms 172.67.128.129
21 2026-08-23 03:21 639230520362691441
10 ms 104.21.1.41
20 2026-08-23 03:04 639230510677194518
16 ms 104.21.1.41
19 2026-08-23 03:04 639230510677194518
16 ms 172.67.128.129
18 2026-08-23 02:49 639230501156002646
22 ms 104.21.1.41
17 2026-08-23 02:49 639230501156002646
22 ms 172.67.128.129
16 2026-08-23 02:32 639230491502198541
27 ms 104.21.1.41
15 2026-08-23 02:32 639230491502198541
27 ms 172.67.128.129
14 2026-08-23 02:16 639230481860318494
27 ms 172.67.128.129
13 2026-08-23 02:16 639230481860318494
27 ms 104.21.1.41
12 2026-08-23 02:00 639230471893008575
94 ms 172.67.128.129
11 2026-08-23 02:00 639230471893008575
94 ms 104.21.1.41
10 2026-08-23 01:07 639230440030877421
21 ms 104.21.1.41
9 2026-08-23 01:07 639230440030877421
21 ms 172.67.128.129
8 2026-08-23 00:51 639230430479725508
26 ms 104.21.1.41
7 2026-08-23 00:51 639230430479725508
26 ms 172.67.128.129
6 2026-08-23 00:35 639230420875160219
15 ms 172.67.128.129
5 2026-08-23 00:35 639230420875160219
15 ms 104.21.1.41
4 2026-08-23 00:19 639230411240692575
25 ms 104.21.1.41
3 2026-08-23 00:19 639230411240692575
25 ms 172.67.128.129
2 2026-08-23 00:03 639230401550806607
2027 ms 104.21.1.41
1 2026-08-23 00:03 639230401550806607
2027 ms 172.67.128.129