History for dns.ctcn.edu.tw
Domain: ctcn.edu.tw • Tracking since 2026-08-04 23:25 UTC
DNS response history for dns.ctcn.edu.tw
dns.ctcn.edu.tw 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 53 DNS check records, 53 successful responses, 0 failed responses, and 2553 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 dns.ctcn.edu.tw.
Records on Selected Date
53
Historical checks stored for this nameserver on selected date
Average Latency
2553 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 17:34
All timestamps shown in UTC
Latest Resolved IP on Selected Date
163.21.98.252
Most recently resolved hosting IP on selected date
Successful Responses
53
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 dns.ctcn.edu.tw
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 |
|---|---|---|---|---|---|
| 53 | 2026-08-26 17:34 | 639233614446136153 |
|
2008 ms | 163.21.98.252 |
| 52 | 2026-08-26 17:16 | 639233603737877581 |
|
303 ms | 163.21.98.252 |
| 51 | 2026-08-26 16:58 | 639233593269224651 |
|
1446 ms | 163.21.98.252 |
| 50 | 2026-08-26 16:41 | 639233582635086903 |
|
2291 ms | 163.21.98.252 |
| 49 | 2026-08-26 16:23 | 639233572000374575 |
|
1966 ms | 163.21.98.252 |
| 48 | 2026-08-26 16:05 | 639233561188633861 |
|
1964 ms | 163.21.98.252 |
| 47 | 2026-08-26 15:47 | 639233550544357027 |
|
567 ms | 163.21.98.252 |
| 46 | 2026-08-26 14:53 | 639233517966053117 |
|
3913 ms | 163.21.98.252 |
| 45 | 2026-08-26 14:35 | 639233507603253585 |
|
3987 ms | 163.21.98.252 |
| 44 | 2026-08-26 14:18 | 639233497229039167 |
|
3995 ms | 163.21.98.252 |
| 43 | 2026-08-26 14:01 | 639233486864546406 |
|
5 ms | 163.21.98.252 |
| 42 | 2026-08-26 13:44 | 639233476455174682 |
|
2018 ms | 163.21.98.252 |
| 41 | 2026-08-26 13:26 | 639233466171592605 |
|
4541 ms | 163.21.98.252 |
| 40 | 2026-08-26 13:09 | 639233455747096265 |
|
2009 ms | 163.21.98.252 |
| 39 | 2026-08-26 12:52 | 639233445367152284 |
|
5 ms | 163.21.98.252 |
| 38 | 2026-08-26 12:34 | 639233434974187439 |
|
1992 ms | 163.21.98.252 |
| 37 | 2026-08-26 12:17 | 639233424567558554 |
|
2490 ms | 163.21.98.252 |
| 36 | 2026-08-26 12:00 | 639233414056832719 |
|
1414 ms | 163.21.98.252 |
| 35 | 2026-08-26 11:42 | 639233403515141099 |
|
1945 ms | 163.21.98.252 |
| 34 | 2026-08-26 10:47 | 639233370841350248 |
|
2277 ms | 163.21.98.252 |
| 33 | 2026-08-26 10:30 | 639233360361507238 |
|
1966 ms | 163.21.98.252 |
| 32 | 2026-08-26 10:13 | 639233350067824371 |
|
1988 ms | 163.21.98.252 |
| 31 | 2026-08-26 09:56 | 639233339545274518 |
|
1994 ms | 163.21.98.252 |
| 30 | 2026-08-26 09:38 | 639233329214918079 |
|
4541 ms | 163.21.98.252 |
| 29 | 2026-08-26 09:21 | 639233318749762337 |
|
2522 ms | 163.21.98.252 |
| 28 | 2026-08-26 09:03 | 639233308387917838 |
|
1968 ms | 163.21.98.252 |
| 27 | 2026-08-26 08:46 | 639233297961740122 |
|
2163 ms | 163.21.98.252 |
| 26 | 2026-08-26 08:29 | 639233287487159094 |
|
1990 ms | 163.21.98.252 |
| 25 | 2026-08-26 08:11 | 639233276995531707 |
|
2278 ms | 163.21.98.252 |
| 24 | 2026-08-26 07:54 | 639233266521568229 |
|
2493 ms | 163.21.98.252 |
| 23 | 2026-08-26 07:36 | 639233256081047431 |
|
4276 ms | 163.21.98.252 |
| 22 | 2026-08-26 06:42 | 639233223620132921 |
|
2010 ms | 163.21.98.252 |
| 21 | 2026-08-26 06:25 | 639233213287814244 |
|
4011 ms | 163.21.98.252 |
| 20 | 2026-08-26 06:08 | 639233202925983161 |
|
4512 ms | 163.21.98.252 |
| 19 | 2026-08-26 05:50 | 639233192644780696 |
|
4276 ms | 163.21.98.252 |
| 18 | 2026-08-26 05:33 | 639233182401183833 |
|
2032 ms | 163.21.98.252 |
| 17 | 2026-08-26 05:16 | 639233172074181051 |
|
1494 ms | 163.21.98.252 |
| 16 | 2026-08-26 04:59 | 639233161808421455 |
|
2543 ms | 163.21.98.252 |
| 15 | 2026-08-26 04:42 | 639233151357344052 |
|
4539 ms | 163.21.98.252 |
| 14 | 2026-08-26 04:24 | 639233141034116946 |
|
2569 ms | 163.21.98.252 |
| 13 | 2026-08-26 04:07 | 639233130828334142 |
|
4553 ms | 163.21.98.252 |
| 12 | 2026-08-26 03:50 | 639233120373450007 |
|
3977 ms | 163.21.98.252 |
| 11 | 2026-08-26 03:33 | 639233110066216193 |
|
2793 ms | 163.21.98.252 |
| 10 | 2026-08-26 02:39 | 639233078065410564 |
|
2528 ms | 163.21.98.252 |
| 9 | 2026-08-26 02:22 | 639233067787457832 |
|
3944 ms | 163.21.98.252 |
| 8 | 2026-08-26 02:05 | 639233057501801162 |
|
4009 ms | 163.21.98.252 |
| 7 | 2026-08-26 01:48 | 639233047089431703 |
|
2007 ms | 163.21.98.252 |
| 6 | 2026-08-26 01:31 | 639233036754790688 |
|
2226 ms | 163.21.98.252 |
| 5 | 2026-08-26 01:13 | 639233026412602472 |
|
4547 ms | 163.21.98.252 |
| 4 | 2026-08-26 00:56 | 639233016064066127 |
|
514 ms | 163.21.98.252 |
| 3 | 2026-08-26 00:39 | 639233005922655772 |
|
2467 ms | 163.21.98.252 |
| 2 | 2026-08-26 00:22 | 639232995672256907 |
|
1971 ms | 163.21.98.252 |
| 1 | 2026-08-26 00:05 | 639232985300872416 |
|
2458 ms | 163.21.98.252 |