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 2026-08-17. For this date, NameServerHistory found 143 DNS check records, 142 successful responses, 1 failed responses, and 145 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

143

Historical checks stored for this nameserver on selected date

Average Latency

145 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-17 23:47

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

142

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 2026-08-17 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
143 2026-08-17 23:47 639226072268080268
95 ms 172.67.128.129
142 2026-08-17 23:47 639226072268080268
95 ms 104.21.1.41
141 2026-08-17 23:31 639226062577647657
31 ms 104.21.1.41
140 2026-08-17 23:31 639226062577647657
31 ms 172.67.128.129
139 2026-08-17 22:38 639226031060857136
46 ms 104.21.1.41
138 2026-08-17 22:38 639226031060857136
46 ms 172.67.128.129
137 2026-08-17 22:22 639226021535117364
38 ms 172.67.128.129
136 2026-08-17 22:22 639226021535117364
38 ms 104.21.1.41
135 2026-08-17 22:06 639226011884237078
10 ms 172.67.128.129
134 2026-08-17 22:06 639226011884237078
10 ms 104.21.1.41
133 2026-08-17 21:50 639226002309299142
55 ms 172.67.128.129
132 2026-08-17 21:50 639226002309299142
55 ms 104.21.1.41
131 2026-08-17 21:35 639225992791784448
12 ms 172.67.128.129
130 2026-08-17 21:35 639225992791784448
12 ms 104.21.1.41
129 2026-08-17 21:18 639225983045271390
20 ms 104.21.1.41
128 2026-08-17 21:18 639225983045271390
20 ms 172.67.128.129
127 2026-08-17 21:02 639225973246293513
66 ms 172.67.128.129
126 2026-08-17 21:02 639225973246293513
66 ms 104.21.1.41
125 2026-08-17 20:46 639225963620186236
2052 ms 172.67.128.129
124 2026-08-17 20:46 639225963620186236
2052 ms 104.21.1.41
123 2026-08-17 20:30 639225953899183916
72 ms 172.67.128.129
122 2026-08-17 20:30 639225953899183916
72 ms 104.21.1.41
121 2026-08-17 20:14 639225944391528206
23 ms 104.21.1.41
120 2026-08-17 20:14 639225944391528206
23 ms 172.67.128.129
119 2026-08-17 19:58 639225934593254169
2047 ms 172.67.128.129
118 2026-08-17 19:58 639225934593254169
2047 ms 104.21.1.41
117 2026-08-17 19:41 639225924669984512
10 ms 172.67.128.129
116 2026-08-17 19:41 639225924669984512
10 ms 104.21.1.41
115 2026-08-17 18:48 639225893048561320
6 ms 104.21.1.41
114 2026-08-17 18:48 639225893048561320
6 ms 172.67.128.129
113 2026-08-17 18:32 639225883481298424
35 ms 104.21.1.41
112 2026-08-17 18:32 639225883481298424
35 ms 172.67.128.129
111 2026-08-17 18:16 639225873845394034
15 ms 172.67.128.129
110 2026-08-17 18:16 639225873845394034
15 ms 104.21.1.41
109 2026-08-17 18:00 639225864216078662
15 ms 104.21.1.41
108 2026-08-17 18:00 639225864216078662
15 ms 172.67.128.129
107 2026-08-17 17:44 639225854541857773
16 ms 172.67.128.129
106 2026-08-17 17:44 639225854541857773
16 ms 104.21.1.41
105 2026-08-17 17:28 639225844733604072
32 ms 172.67.128.129
104 2026-08-17 17:28 639225844733604072
32 ms 104.21.1.41
103 2026-08-17 17:12 639225835085229232
24 ms 104.21.1.41
102 2026-08-17 17:12 639225835085229232
24 ms 172.67.128.129
101 2026-08-17 16:55 639225825349373981
49 ms 104.21.1.41
100 2026-08-17 16:55 639225825349373981
49 ms 172.67.128.129
99 2026-08-17 16:39 639225815690604161
8 ms 172.67.128.129
98 2026-08-17 16:39 639225815690604161
8 ms 104.21.1.41
97 2026-08-17 16:23 639225805952472306
8 ms 104.21.1.41
96 2026-08-17 16:23 639225805952472306
8 ms 172.67.128.129
95 2026-08-17 16:07 639225796264729638
23 ms 172.67.128.129
94 2026-08-17 16:07 639225796264729638
23 ms 104.21.1.41
93 2026-08-17 15:50 639225786326499329
16 ms 172.67.128.129
92 2026-08-17 15:50 639225786326499329
16 ms 104.21.1.41
91 2026-08-17 14:58 639225754798130711
25 ms 172.67.128.129
90 2026-08-17 14:58 639225754798130711
25 ms 104.21.1.41
89 2026-08-17 14:42 639225745123193922
38 ms 172.67.128.129
88 2026-08-17 14:42 639225745123193922
38 ms 104.21.1.41
87 2026-08-17 14:26 639225735540597271
15 ms 104.21.1.41
86 2026-08-17 14:26 639225735540597271
15 ms 172.67.128.129
85 2026-08-17 14:10 639225725894857396
88 ms 172.67.128.129
84 2026-08-17 14:10 639225725894857396
88 ms 104.21.1.41
83 2026-08-17 13:54 639225716249606913
114 ms 172.67.128.129
82 2026-08-17 13:54 639225716249606913
114 ms 104.21.1.41
81 2026-08-17 13:38 639225706638238179
63 ms 104.21.1.41
80 2026-08-17 13:38 639225706638238179
63 ms 172.67.128.129
79 2026-08-17 13:21 639225696949691423
15 ms 104.21.1.41
78 2026-08-17 13:21 639225696949691423
15 ms 172.67.128.129
77 2026-08-17 13:05 639225687286186336
46 ms 104.21.1.41
76 2026-08-17 13:05 639225687286186336
46 ms 172.67.128.129
75 2026-08-17 12:49 639225677679573133
59 ms 172.67.128.129
74 2026-08-17 12:49 639225677679573133
59 ms 104.21.1.41
73 2026-08-17 12:33 639225667957861024
46 ms 172.67.128.129
72 2026-08-17 12:33 639225667957861024
46 ms 104.21.1.41
71 2026-08-17 12:17 639225658298791618
15 ms 104.21.1.41
70 2026-08-17 12:17 639225658298791618
15 ms 172.67.128.129
69 2026-08-17 12:01 639225648583652785
36 ms 172.67.128.129
68 2026-08-17 12:01 639225648583652785
36 ms 104.21.1.41
67 2026-08-17 11:08 639225617000524308
49 ms 172.67.128.129
66 2026-08-17 11:08 639225617000524308
49 ms 104.21.1.41
65 2026-08-17 10:53 639225607668541600
27 ms 172.67.128.129
64 2026-08-17 10:53 639225607668541600
27 ms 104.21.1.41
63 2026-08-17 10:37 639225598117279238
85 ms 172.67.128.129
62 2026-08-17 10:37 639225598117279238
85 ms 104.21.1.41
61 2026-08-17 10:21 639225588751002710
40 ms 172.67.128.129
60 2026-08-17 10:21 639225588751002710
40 ms 104.21.1.41
59 2026-08-17 10:05 639225579295831051
12 ms 172.67.128.129
58 2026-08-17 10:05 639225579295831051
12 ms 104.21.1.41
57 2026-08-17 09:50 639225569761469940
15 ms 172.67.128.129
56 2026-08-17 09:50 639225569761469940
15 ms 104.21.1.41
55 2026-08-17 09:34 639225560161422333
2069 ms 172.67.128.129
54 2026-08-17 09:34 639225560161422333
2069 ms 104.21.1.41
53 2026-08-17 09:18 639225550739955565
21 ms 172.67.128.129
52 2026-08-17 09:18 639225550739955565
21 ms 104.21.1.41
51 2026-08-17 09:02 639225541125222426
11 ms 172.67.128.129
50 2026-08-17 09:02 639225541125222426
11 ms 104.21.1.41
49 2026-08-17 08:46 639225531526675983
37 ms 104.21.1.41
48 2026-08-17 08:46 639225531526675983
37 ms 172.67.128.129
47 2026-08-17 08:30 639225521915528222
18 ms 104.21.1.41
46 2026-08-17 08:30 639225521915528222
18 ms 172.67.128.129
45 2026-08-17 08:14 639225512148151789
16 ms 104.21.1.41
44 2026-08-17 08:14 639225512148151789
16 ms 172.67.128.129
43 2026-08-17 07:21 639225480786142412
12 ms 172.67.128.129
42 2026-08-17 07:21 639225480786142412
12 ms 104.21.1.41
41 2026-08-17 07:06 639225471394348551
5 ms 104.21.1.41
40 2026-08-17 07:06 639225471394348551
5 ms 172.67.128.129
39 2026-08-17 06:50 639225462031685068
2023 ms 172.67.128.129
38 2026-08-17 06:50 639225462031685068
2023 ms 104.21.1.41
37 2026-08-17 06:34 639225452639458328
8 ms 104.21.1.41
36 2026-08-17 06:34 639225452639458328
8 ms 172.67.128.129
35 2026-08-17 06:19 639225443300966543
22 ms 172.67.128.129
34 2026-08-17 06:19 639225443300966543
22 ms 104.21.1.41
33 2026-08-17 06:03 639225433880499379
17 ms 172.67.128.129
32 2026-08-17 06:03 639225433880499379
17 ms 104.21.1.41
31 2026-08-17 05:47 639225424395198277
27 ms 104.21.1.41
30 2026-08-17 05:47 639225424395198277
27 ms 172.67.128.129
29 2026-08-17 05:31 639225414744137487
15 ms 172.67.128.129
28 2026-08-17 05:31 639225414744137487
15 ms 104.21.1.41
27 2026-08-17 05:15 639225405186783164
7 ms 172.67.128.129
26 2026-08-17 05:15 639225405186783164
7 ms 104.21.1.41
25 2026-08-17 04:59 639225395563669822
8 ms 172.67.128.129
24 2026-08-17 04:59 639225395563669822
8 ms 104.21.1.41
23 2026-08-17 04:43 639225386076645158
46 ms 172.67.128.129
22 2026-08-17 04:43 639225386076645158
46 ms 104.21.1.41
21 2026-08-17 04:28 639225376620669704
31 ms 104.21.1.41
20 2026-08-17 04:28 639225376620669704
31 ms 172.67.128.129
19 2026-08-17 03:36 639225345580892706
-
18 2026-08-17 03:20 639225336207383710
67 ms 104.21.1.41
17 2026-08-17 03:20 639225336207383710
67 ms 172.67.128.129
16 2026-08-17 03:04 639225326726565001
8 ms 104.21.1.41
15 2026-08-17 03:04 639225326726565001
8 ms 172.67.128.129
14 2026-08-17 02:49 639225317249271010
11 ms 104.21.1.41
13 2026-08-17 02:49 639225317249271010
11 ms 172.67.128.129
12 2026-08-17 01:57 639225286280886044
18 ms 172.67.128.129
11 2026-08-17 01:57 639225286280886044
18 ms 104.21.1.41
10 2026-08-17 01:41 639225276872567548
25 ms 172.67.128.129
9 2026-08-17 01:41 639225276872567548
25 ms 104.21.1.41
8 2026-08-17 01:25 639225267353865348
53 ms 104.21.1.41
7 2026-08-17 01:25 639225267353865348
53 ms 172.67.128.129
6 2026-08-17 01:10 639225258033914248
13 ms 104.21.1.41
5 2026-08-17 01:10 639225258033914248
13 ms 172.67.128.129
4 2026-08-17 00:18 639225226652221583
59 ms 104.21.1.41
3 2026-08-17 00:18 639225226652221583
59 ms 172.67.128.129
2 2026-08-17 00:02 639225217156387684
16 ms 172.67.128.129
1 2026-08-17 00:02 639225217156387684
16 ms 104.21.1.41