DNS response history for dns1.u4c.com

dns1.u4c.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 2026-08-26. For this date, NameServerHistory found 110 DNS check records, 110 successful responses, 0 failed responses, and 138 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 dns1.u4c.com.
Records on Selected Date

110

Historical checks stored for this nameserver on selected date

Average Latency

138 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-26 18:10

All timestamps shown in UTC

Latest Resolved IP on Selected Date

104.21.14.197

Most recently resolved hosting IP on selected date

Successful Responses

110

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 dns1.u4c.com

Showing DNS history for 2026-08-26 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
110 2026-08-26 18:10 639233646245051806
4 ms 104.21.14.197
109 2026-08-26 18:10 639233646245051806
4 ms 172.67.160.77
108 2026-08-26 17:53 639233635663779051
38 ms 172.67.160.77
107 2026-08-26 17:53 639233635663779051
38 ms 104.21.14.197
106 2026-08-26 17:35 639233624977342122
14 ms 172.67.160.77
105 2026-08-26 17:35 639233624977342122
14 ms 104.21.14.197
104 2026-08-26 17:17 639233614446136153
68 ms 104.21.14.197
103 2026-08-26 17:17 639233614446136153
68 ms 172.67.160.77
102 2026-08-26 16:59 639233603737877581
9 ms 104.21.14.197
101 2026-08-26 16:59 639233603737877581
9 ms 172.67.160.77
100 2026-08-26 16:42 639233593269224651
20 ms 172.67.160.77
99 2026-08-26 16:42 639233593269224651
20 ms 104.21.14.197
98 2026-08-26 16:24 639233582635086903
5 ms 104.21.14.197
97 2026-08-26 16:24 639233582635086903
5 ms 172.67.160.77
96 2026-08-26 16:07 639233572000374575
11 ms 104.21.14.197
95 2026-08-26 16:07 639233572000374575
11 ms 172.67.160.77
94 2026-08-26 15:49 639233561188633861
21 ms 172.67.160.77
93 2026-08-26 15:49 639233561188633861
21 ms 104.21.14.197
92 2026-08-26 15:31 639233550544357027
26 ms 104.21.14.197
91 2026-08-26 15:31 639233550544357027
26 ms 172.67.160.77
90 2026-08-26 14:36 639233517966053117
61 ms 104.21.14.197
89 2026-08-26 14:36 639233517966053117
61 ms 172.67.160.77
88 2026-08-26 14:19 639233507603253585
11 ms 104.21.14.197
87 2026-08-26 14:19 639233507603253585
11 ms 172.67.160.77
86 2026-08-26 14:02 639233497229039167
33 ms 104.21.14.197
85 2026-08-26 14:02 639233497229039167
33 ms 172.67.160.77
84 2026-08-26 13:45 639233486864546406
14 ms 172.67.160.77
83 2026-08-26 13:45 639233486864546406
14 ms 104.21.14.197
82 2026-08-26 13:27 639233476455174682
37 ms 172.67.160.77
81 2026-08-26 13:27 639233476455174682
37 ms 104.21.14.197
80 2026-08-26 13:10 639233466171592605
35 ms 104.21.14.197
79 2026-08-26 13:10 639233466171592605
35 ms 172.67.160.77
78 2026-08-26 12:53 639233455747096265
36 ms 104.21.14.197
77 2026-08-26 12:53 639233455747096265
36 ms 172.67.160.77
76 2026-08-26 12:35 639233445367152284
19 ms 104.21.14.197
75 2026-08-26 12:35 639233445367152284
19 ms 172.67.160.77
74 2026-08-26 12:18 639233434974187439
15 ms 172.67.160.77
73 2026-08-26 12:18 639233434974187439
15 ms 104.21.14.197
72 2026-08-26 12:01 639233424567558554
58 ms 104.21.14.197
71 2026-08-26 12:01 639233424567558554
58 ms 172.67.160.77
70 2026-08-26 11:43 639233414056832719
33 ms 104.21.14.197
69 2026-08-26 11:43 639233414056832719
33 ms 172.67.160.77
68 2026-08-26 11:26 639233403515141099
31 ms 172.67.160.77
67 2026-08-26 11:26 639233403515141099
31 ms 104.21.14.197
66 2026-08-26 10:31 639233370841350248
54 ms 172.67.160.77
65 2026-08-26 10:31 639233370841350248
54 ms 104.21.14.197
64 2026-08-26 10:14 639233360361507238
34 ms 172.67.160.77
63 2026-08-26 10:14 639233360361507238
34 ms 104.21.14.197
62 2026-08-26 09:57 639233350067824371
38 ms 172.67.160.77
61 2026-08-26 09:57 639233350067824371
38 ms 104.21.14.197
60 2026-08-26 09:39 639233339545274518
27 ms 172.67.160.77
59 2026-08-26 09:39 639233339545274518
27 ms 104.21.14.197
58 2026-08-26 09:22 639233329214918079
14 ms 104.21.14.197
57 2026-08-26 09:22 639233329214918079
14 ms 172.67.160.77
56 2026-08-26 09:04 639233318749762337
17 ms 172.67.160.77
55 2026-08-26 09:04 639233318749762337
17 ms 104.21.14.197
54 2026-08-26 08:47 639233308387917838
8 ms 172.67.160.77
53 2026-08-26 08:47 639233308387917838
8 ms 104.21.14.197
52 2026-08-26 08:30 639233297961740122
2046 ms 104.21.14.197
51 2026-08-26 08:30 639233297961740122
2046 ms 172.67.160.77
50 2026-08-26 08:12 639233287487159094
8 ms 104.21.14.197
49 2026-08-26 08:12 639233287487159094
8 ms 172.67.160.77
48 2026-08-26 07:55 639233276995531707
34 ms 104.21.14.197
47 2026-08-26 07:55 639233276995531707
34 ms 172.67.160.77
46 2026-08-26 07:37 639233266521568229
23 ms 172.67.160.77
45 2026-08-26 07:37 639233266521568229
23 ms 104.21.14.197
44 2026-08-26 07:20 639233256081047431
35 ms 172.67.160.77
43 2026-08-26 07:20 639233256081047431
35 ms 104.21.14.197
42 2026-08-26 06:26 639233223620132921
12 ms 104.21.14.197
41 2026-08-26 06:26 639233223620132921
12 ms 172.67.160.77
40 2026-08-26 06:09 639233213287814244
47 ms 104.21.14.197
39 2026-08-26 06:09 639233213287814244
47 ms 172.67.160.77
38 2026-08-26 05:51 639233202925983161
8 ms 172.67.160.77
37 2026-08-26 05:51 639233202925983161
8 ms 104.21.14.197
36 2026-08-26 05:34 639233192644780696
13 ms 172.67.160.77
35 2026-08-26 05:34 639233192644780696
13 ms 104.21.14.197
34 2026-08-26 05:17 639233182401183833
140 ms 172.67.160.77
33 2026-08-26 05:17 639233182401183833
140 ms 104.21.14.197
32 2026-08-26 05:00 639233172074181051
32 ms 104.21.14.197
31 2026-08-26 05:00 639233172074181051
32 ms 172.67.160.77
30 2026-08-26 04:43 639233161808421455
16 ms 104.21.14.197
29 2026-08-26 04:43 639233161808421455
16 ms 172.67.160.77
28 2026-08-26 04:25 639233151357344052
27 ms 172.67.160.77
27 2026-08-26 04:25 639233151357344052
27 ms 104.21.14.197
26 2026-08-26 04:08 639233141034116946
42 ms 172.67.160.77
25 2026-08-26 04:08 639233141034116946
42 ms 104.21.14.197
24 2026-08-26 03:51 639233130828334142
29 ms 104.21.14.197
23 2026-08-26 03:51 639233130828334142
29 ms 172.67.160.77
22 2026-08-26 03:34 639233120373450007
10 ms 104.21.14.197
21 2026-08-26 03:34 639233120373450007
10 ms 172.67.160.77
20 2026-08-26 03:17 639233110066216193
56 ms 172.67.160.77
19 2026-08-26 03:17 639233110066216193
56 ms 104.21.14.197
18 2026-08-26 02:23 639233078065410564
37 ms 172.67.160.77
17 2026-08-26 02:23 639233078065410564
37 ms 104.21.14.197
16 2026-08-26 02:06 639233067787457832
11 ms 104.21.14.197
15 2026-08-26 02:06 639233067787457832
11 ms 172.67.160.77
14 2026-08-26 01:49 639233057501801162
22 ms 172.67.160.77
13 2026-08-26 01:49 639233057501801162
22 ms 104.21.14.197
12 2026-08-26 01:32 639233047089431703
39 ms 104.21.14.197
11 2026-08-26 01:32 639233047089431703
39 ms 172.67.160.77
10 2026-08-26 01:15 639233036754790688
2033 ms 104.21.14.197
9 2026-08-26 01:15 639233036754790688
2033 ms 172.67.160.77
8 2026-08-26 00:57 639233026412602472
4 ms 172.67.160.77
7 2026-08-26 00:57 639233026412602472
4 ms 104.21.14.197
6 2026-08-26 00:40 639233016064066127
2027 ms 104.21.14.197
5 2026-08-26 00:40 639233016064066127
2027 ms 172.67.160.77
4 2026-08-26 00:23 639233005922655772
5 ms 104.21.14.197
3 2026-08-26 00:23 639233005922655772
5 ms 172.67.160.77
2 2026-08-26 00:06 639232995672256907
52 ms 172.67.160.77
1 2026-08-26 00:06 639232995672256907
52 ms 104.21.14.197