History for def.com
Domain: def.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for def.com
def.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 149 DNS check records, 148 successful responses, 1 failed responses, and 216 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 def.com.
Records on Selected Date
149
Historical checks stored for this nameserver on selected date
Average Latency
216 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-23 23:45
All timestamps shown in UTC
Latest Resolved IP on Selected Date
104.21.9.147
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 def.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 |
|---|---|---|---|---|---|
| 149 | 2026-08-23 23:45 | 639231254406598736 |
|
37 ms | 104.21.9.147 |
| 148 | 2026-08-23 23:45 | 639231254406598736 |
|
37 ms | 172.67.160.47 |
| 147 | 2026-08-23 23:29 | 639231244697865594 |
|
11 ms | 104.21.9.147 |
| 146 | 2026-08-23 23:29 | 639231244697865594 |
|
11 ms | 172.67.160.47 |
| 145 | 2026-08-23 23:13 | 639231234893504693 |
|
21 ms | 172.67.160.47 |
| 144 | 2026-08-23 23:13 | 639231234893504693 |
|
21 ms | 104.21.9.147 |
| 143 | 2026-08-23 22:56 | 639231225024549139 |
|
57 ms | 172.67.160.47 |
| 142 | 2026-08-23 22:56 | 639231225024549139 |
|
57 ms | 104.21.9.147 |
| 141 | 2026-08-23 22:40 | 639231214931957622 |
|
- | |
| 140 | 2026-08-23 22:23 | 639231204962010549 |
|
32 ms | 104.21.9.147 |
| 139 | 2026-08-23 22:23 | 639231204962010549 |
|
32 ms | 172.67.160.47 |
| 138 | 2026-08-23 22:06 | 639231195170138463 |
|
2033 ms | 104.21.9.147 |
| 137 | 2026-08-23 22:06 | 639231195170138463 |
|
2033 ms | 172.67.160.47 |
| 136 | 2026-08-23 21:50 | 639231185235020577 |
|
2019 ms | 104.21.9.147 |
| 135 | 2026-08-23 21:50 | 639231185235020577 |
|
2019 ms | 172.67.160.47 |
| 134 | 2026-08-23 21:34 | 639231175558690075 |
|
10 ms | 172.67.160.47 |
| 133 | 2026-08-23 21:34 | 639231175558690075 |
|
10 ms | 104.21.9.147 |
| 132 | 2026-08-23 21:17 | 639231165610444012 |
|
5 ms | 104.21.9.147 |
| 131 | 2026-08-23 21:17 | 639231165610444012 |
|
5 ms | 172.67.160.47 |
| 130 | 2026-08-23 20:24 | 639231133806425363 |
|
2031 ms | 172.67.160.47 |
| 129 | 2026-08-23 20:24 | 639231133806425363 |
|
2031 ms | 104.21.9.147 |
| 128 | 2026-08-23 20:08 | 639231124203758023 |
|
38 ms | 104.21.9.147 |
| 127 | 2026-08-23 20:08 | 639231124203758023 |
|
38 ms | 172.67.160.47 |
| 126 | 2026-08-23 19:52 | 639231114428262706 |
|
2021 ms | 104.21.9.147 |
| 125 | 2026-08-23 19:52 | 639231114428262706 |
|
2021 ms | 172.67.160.47 |
| 124 | 2026-08-23 19:36 | 639231104662480065 |
|
96 ms | 104.21.9.147 |
| 123 | 2026-08-23 19:36 | 639231104662480065 |
|
96 ms | 172.67.160.47 |
| 122 | 2026-08-23 19:19 | 639231094840372018 |
|
12 ms | 172.67.160.47 |
| 121 | 2026-08-23 19:19 | 639231094840372018 |
|
12 ms | 104.21.9.147 |
| 120 | 2026-08-23 19:03 | 639231085024583224 |
|
14 ms | 172.67.160.47 |
| 119 | 2026-08-23 19:03 | 639231085024583224 |
|
14 ms | 104.21.9.147 |
| 118 | 2026-08-23 18:47 | 639231075257417427 |
|
12 ms | 172.67.160.47 |
| 117 | 2026-08-23 18:47 | 639231075257417427 |
|
12 ms | 104.21.9.147 |
| 116 | 2026-08-23 18:30 | 639231065516009503 |
|
10 ms | 104.21.9.147 |
| 115 | 2026-08-23 18:30 | 639231065516009503 |
|
10 ms | 172.67.160.47 |
| 114 | 2026-08-23 18:14 | 639231055805348837 |
|
14 ms | 104.21.9.147 |
| 113 | 2026-08-23 18:14 | 639231055805348837 |
|
14 ms | 172.67.160.47 |
| 112 | 2026-08-23 17:58 | 639231045980373765 |
|
139 ms | 172.67.160.47 |
| 111 | 2026-08-23 17:58 | 639231045980373765 |
|
139 ms | 104.21.9.147 |
| 110 | 2026-08-23 17:41 | 639231035984577527 |
|
18 ms | 172.67.160.47 |
| 109 | 2026-08-23 17:41 | 639231035984577527 |
|
18 ms | 104.21.9.147 |
| 108 | 2026-08-23 17:24 | 639231025928115303 |
|
9 ms | 172.67.160.47 |
| 107 | 2026-08-23 17:24 | 639231025928115303 |
|
9 ms | 104.21.9.147 |
| 106 | 2026-08-23 16:32 | 639230994250157583 |
|
18 ms | 104.21.9.147 |
| 105 | 2026-08-23 16:32 | 639230994250157583 |
|
18 ms | 172.67.160.47 |
| 104 | 2026-08-23 16:15 | 639230984476411369 |
|
10 ms | 104.21.9.147 |
| 103 | 2026-08-23 16:15 | 639230984476411369 |
|
10 ms | 172.67.160.47 |
| 102 | 2026-08-23 15:59 | 639230974838373450 |
|
31 ms | 104.21.9.147 |
| 101 | 2026-08-23 15:59 | 639230974838373450 |
|
31 ms | 172.67.160.47 |
| 100 | 2026-08-23 15:43 | 639230965244277645 |
|
34 ms | 172.67.160.47 |
| 99 | 2026-08-23 15:43 | 639230965244277645 |
|
34 ms | 104.21.9.147 |
| 98 | 2026-08-23 15:27 | 639230955522101820 |
|
46 ms | 104.21.9.147 |
| 97 | 2026-08-23 15:27 | 639230955522101820 |
|
46 ms | 172.67.160.47 |
| 96 | 2026-08-23 15:11 | 639230945754521603 |
|
12 ms | 172.67.160.47 |
| 95 | 2026-08-23 15:11 | 639230945754521603 |
|
12 ms | 104.21.9.147 |
| 94 | 2026-08-23 14:54 | 639230935852040504 |
|
66 ms | 104.21.9.147 |
| 93 | 2026-08-23 14:54 | 639230935852040504 |
|
66 ms | 172.67.160.47 |
| 92 | 2026-08-23 14:38 | 639230926222061048 |
|
2019 ms | 172.67.160.47 |
| 91 | 2026-08-23 14:38 | 639230926222061048 |
|
2019 ms | 104.21.9.147 |
| 90 | 2026-08-23 14:22 | 639230916449726907 |
|
11 ms | 104.21.9.147 |
| 89 | 2026-08-23 14:22 | 639230916449726907 |
|
11 ms | 172.67.160.47 |
| 88 | 2026-08-23 14:05 | 639230906595053086 |
|
7 ms | 172.67.160.47 |
| 87 | 2026-08-23 14:05 | 639230906595053086 |
|
7 ms | 104.21.9.147 |
| 86 | 2026-08-23 13:49 | 639230896680429441 |
|
21 ms | 104.21.9.147 |
| 85 | 2026-08-23 13:49 | 639230896680429441 |
|
21 ms | 172.67.160.47 |
| 84 | 2026-08-23 13:32 | 639230886630210965 |
|
34 ms | 172.67.160.47 |
| 83 | 2026-08-23 13:32 | 639230886630210965 |
|
34 ms | 104.21.9.147 |
| 82 | 2026-08-23 12:40 | 639230855430405719 |
|
16 ms | 172.67.160.47 |
| 81 | 2026-08-23 12:40 | 639230855430405719 |
|
16 ms | 104.21.9.147 |
| 80 | 2026-08-23 12:24 | 639230845707499136 |
|
25 ms | 104.21.9.147 |
| 79 | 2026-08-23 12:24 | 639230845707499136 |
|
25 ms | 172.67.160.47 |
| 78 | 2026-08-23 12:08 | 639230836186805419 |
|
11 ms | 104.21.9.147 |
| 77 | 2026-08-23 12:08 | 639230836186805419 |
|
11 ms | 172.67.160.47 |
| 76 | 2026-08-23 11:52 | 639230826493828316 |
|
11 ms | 104.21.9.147 |
| 75 | 2026-08-23 11:52 | 639230826493828316 |
|
11 ms | 172.67.160.47 |
| 74 | 2026-08-23 11:36 | 639230816817882996 |
|
2041 ms | 104.21.9.147 |
| 73 | 2026-08-23 11:36 | 639230816817882996 |
|
2041 ms | 172.67.160.47 |
| 72 | 2026-08-23 11:19 | 639230806933854189 |
|
13 ms | 104.21.9.147 |
| 71 | 2026-08-23 11:19 | 639230806933854189 |
|
13 ms | 172.67.160.47 |
| 70 | 2026-08-23 11:03 | 639230797120243854 |
|
10 ms | 172.67.160.47 |
| 69 | 2026-08-23 11:03 | 639230797120243854 |
|
10 ms | 104.21.9.147 |
| 68 | 2026-08-23 10:47 | 639230787310272840 |
|
7 ms | 104.21.9.147 |
| 67 | 2026-08-23 10:47 | 639230787310272840 |
|
7 ms | 172.67.160.47 |
| 66 | 2026-08-23 10:30 | 639230777600173142 |
|
17 ms | 172.67.160.47 |
| 65 | 2026-08-23 10:30 | 639230777600173142 |
|
17 ms | 104.21.9.147 |
| 64 | 2026-08-23 10:14 | 639230767665024593 |
|
15 ms | 172.67.160.47 |
| 63 | 2026-08-23 10:14 | 639230767665024593 |
|
15 ms | 104.21.9.147 |
| 62 | 2026-08-23 09:57 | 639230757720962293 |
|
7 ms | 104.21.9.147 |
| 61 | 2026-08-23 09:57 | 639230757720962293 |
|
7 ms | 172.67.160.47 |
| 60 | 2026-08-23 09:41 | 639230747722189784 |
|
30 ms | 172.67.160.47 |
| 59 | 2026-08-23 09:41 | 639230747722189784 |
|
30 ms | 104.21.9.147 |
| 58 | 2026-08-23 08:48 | 639230716313923480 |
|
46 ms | 172.67.160.47 |
| 57 | 2026-08-23 08:48 | 639230716313923480 |
|
46 ms | 104.21.9.147 |
| 56 | 2026-08-23 08:33 | 639230706813835990 |
|
17 ms | 172.67.160.47 |
| 55 | 2026-08-23 08:33 | 639230706813835990 |
|
17 ms | 104.21.9.147 |
| 54 | 2026-08-23 08:16 | 639230696871062203 |
|
102 ms | 172.67.160.47 |
| 53 | 2026-08-23 08:16 | 639230696871062203 |
|
102 ms | 104.21.9.147 |
| 52 | 2026-08-23 08:00 | 639230687142781616 |
|
22 ms | 104.21.9.147 |
| 51 | 2026-08-23 08:00 | 639230687142781616 |
|
22 ms | 172.67.160.47 |
| 50 | 2026-08-23 07:44 | 639230677432142227 |
|
28 ms | 104.21.9.147 |
| 49 | 2026-08-23 07:44 | 639230677432142227 |
|
28 ms | 172.67.160.47 |
| 48 | 2026-08-23 07:27 | 639230667686258061 |
|
11 ms | 104.21.9.147 |
| 47 | 2026-08-23 07:27 | 639230667686258061 |
|
11 ms | 172.67.160.47 |
| 46 | 2026-08-23 07:11 | 639230658039243685 |
|
19 ms | 172.67.160.47 |
| 45 | 2026-08-23 07:11 | 639230658039243685 |
|
19 ms | 104.21.9.147 |
| 44 | 2026-08-23 06:55 | 639230648468473803 |
|
14 ms | 104.21.9.147 |
| 43 | 2026-08-23 06:55 | 639230648468473803 |
|
14 ms | 172.67.160.47 |
| 42 | 2026-08-23 06:39 | 639230638829658294 |
|
17 ms | 104.21.9.147 |
| 41 | 2026-08-23 06:39 | 639230638829658294 |
|
17 ms | 172.67.160.47 |
| 40 | 2026-08-23 06:23 | 639230629247017617 |
|
14 ms | 104.21.9.147 |
| 39 | 2026-08-23 06:23 | 639230629247017617 |
|
14 ms | 172.67.160.47 |
| 38 | 2026-08-23 06:07 | 639230619625318239 |
|
19 ms | 104.21.9.147 |
| 37 | 2026-08-23 06:07 | 639230619625318239 |
|
19 ms | 172.67.160.47 |
| 36 | 2026-08-23 05:51 | 639230609697630264 |
|
7 ms | 172.67.160.47 |
| 35 | 2026-08-23 05:51 | 639230609697630264 |
|
7 ms | 104.21.9.147 |
| 34 | 2026-08-23 04:59 | 639230578570131864 |
|
15 ms | 104.21.9.147 |
| 33 | 2026-08-23 04:59 | 639230578570131864 |
|
15 ms | 172.67.160.47 |
| 32 | 2026-08-23 04:43 | 639230568958963168 |
|
32 ms | 172.67.160.47 |
| 31 | 2026-08-23 04:43 | 639230568958963168 |
|
32 ms | 104.21.9.147 |
| 30 | 2026-08-23 04:27 | 639230559287611211 |
|
59 ms | 104.21.9.147 |
| 29 | 2026-08-23 04:27 | 639230559287611211 |
|
59 ms | 172.67.160.47 |
| 28 | 2026-08-23 04:10 | 639230549524312030 |
|
46 ms | 104.21.9.147 |
| 27 | 2026-08-23 04:10 | 639230549524312030 |
|
46 ms | 172.67.160.47 |
| 26 | 2026-08-23 03:54 | 639230539739801669 |
|
14 ms | 104.21.9.147 |
| 25 | 2026-08-23 03:54 | 639230539739801669 |
|
14 ms | 172.67.160.47 |
| 24 | 2026-08-23 03:38 | 639230530084069375 |
|
10 ms | 104.21.9.147 |
| 23 | 2026-08-23 03:38 | 639230530084069375 |
|
10 ms | 172.67.160.47 |
| 22 | 2026-08-23 03:22 | 639230520362691441 |
|
30 ms | 104.21.9.147 |
| 21 | 2026-08-23 03:22 | 639230520362691441 |
|
30 ms | 172.67.160.47 |
| 20 | 2026-08-23 03:06 | 639230510677194518 |
|
21 ms | 104.21.9.147 |
| 19 | 2026-08-23 03:06 | 639230510677194518 |
|
21 ms | 172.67.160.47 |
| 18 | 2026-08-23 02:50 | 639230501156002646 |
|
32 ms | 104.21.9.147 |
| 17 | 2026-08-23 02:50 | 639230501156002646 |
|
32 ms | 172.67.160.47 |
| 16 | 2026-08-23 02:34 | 639230491502198541 |
|
10 ms | 172.67.160.47 |
| 15 | 2026-08-23 02:34 | 639230491502198541 |
|
10 ms | 104.21.9.147 |
| 14 | 2026-08-23 02:17 | 639230481860318494 |
|
53 ms | 104.21.9.147 |
| 13 | 2026-08-23 02:17 | 639230481860318494 |
|
53 ms | 172.67.160.47 |
| 12 | 2026-08-23 02:01 | 639230471893008575 |
|
96 ms | 172.67.160.47 |
| 11 | 2026-08-23 02:01 | 639230471893008575 |
|
96 ms | 104.21.9.147 |
| 10 | 2026-08-23 01:08 | 639230440030877421 |
|
26 ms | 104.21.9.147 |
| 9 | 2026-08-23 01:08 | 639230440030877421 |
|
26 ms | 172.67.160.47 |
| 8 | 2026-08-23 00:52 | 639230430479725508 |
|
52 ms | 104.21.9.147 |
| 7 | 2026-08-23 00:52 | 639230430479725508 |
|
52 ms | 172.67.160.47 |
| 6 | 2026-08-23 00:36 | 639230420875160219 |
|
18 ms | 172.67.160.47 |
| 5 | 2026-08-23 00:36 | 639230420875160219 |
|
18 ms | 104.21.9.147 |
| 4 | 2026-08-23 00:20 | 639230411240692575 |
|
2027 ms | 104.21.9.147 |
| 3 | 2026-08-23 00:20 | 639230411240692575 |
|
2027 ms | 172.67.160.47 |
| 2 | 2026-08-23 00:04 | 639230401550806607 |
|
12 ms | 172.67.160.47 |
| 1 | 2026-08-23 00:04 | 639230401550806607 |
|
12 ms | 104.21.9.147 |