History for dns2.cupk.edu.cn
Domain: cupk.edu.cn • Tracking since 2026-08-04 23:25 UTC
DNS response history for dns2.cupk.edu.cn
dns2.cupk.edu.cn 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 22 DNS check records, 22 successful responses, 0 failed responses, and 2354 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 dns2.cupk.edu.cn.
Records on Selected Date
22
Historical checks stored for this nameserver on selected date
Average Latency
2354 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 06:42
All timestamps shown in UTC
Latest Resolved IP on Selected Date
42.247.21.33
Most recently resolved hosting IP on selected date
Successful Responses
22
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 dns2.cupk.edu.cn
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 |
|---|---|---|---|---|---|
| 22 | 2026-08-26 06:42 | 639233223620132921 |
|
4321 ms | 42.247.21.33 |
| 21 | 2026-08-26 06:25 | 639233213287814244 |
|
1760 ms | 42.247.21.33 |
| 20 | 2026-08-26 06:07 | 639233202925983161 |
|
1736 ms | 42.247.21.33 |
| 19 | 2026-08-26 05:50 | 639233192644780696 |
|
1770 ms | 42.247.21.33 |
| 18 | 2026-08-26 05:33 | 639233182401183833 |
|
2534 ms | 42.247.21.33 |
| 17 | 2026-08-26 05:16 | 639233172074181051 |
|
4325 ms | 42.247.21.33 |
| 16 | 2026-08-26 04:59 | 639233161808421455 |
|
2321 ms | 42.247.21.33 |
| 15 | 2026-08-26 04:42 | 639233151357344052 |
|
2709 ms | 42.247.21.33 |
| 14 | 2026-08-26 04:24 | 639233141034116946 |
|
1766 ms | 42.247.21.33 |
| 13 | 2026-08-26 04:07 | 639233130828334142 |
|
1761 ms | 42.247.21.33 |
| 12 | 2026-08-26 03:50 | 639233120373450007 |
|
1878 ms | 42.247.21.33 |
| 11 | 2026-08-26 03:33 | 639233110066216193 |
|
2325 ms | 42.247.21.33 |
| 10 | 2026-08-26 02:39 | 639233078065410564 |
|
1785 ms | 42.247.21.33 |
| 9 | 2026-08-26 02:22 | 639233067787457832 |
|
4326 ms | 42.247.21.33 |
| 8 | 2026-08-26 02:05 | 639233057501801162 |
|
1511 ms | 42.247.21.33 |
| 7 | 2026-08-26 01:48 | 639233047089431703 |
|
3813 ms | 42.247.21.33 |
| 6 | 2026-08-26 01:30 | 639233036754790688 |
|
1742 ms | 42.247.21.33 |
| 5 | 2026-08-26 01:13 | 639233026412602472 |
|
1731 ms | 42.247.21.33 |
| 4 | 2026-08-26 00:56 | 639233016064066127 |
|
2320 ms | 42.247.21.33 |
| 3 | 2026-08-26 00:39 | 639233005922655772 |
|
256 ms | 42.247.21.33 |
| 2 | 2026-08-26 00:22 | 639232995672256907 |
|
1259 ms | 42.247.21.33 |
| 1 | 2026-08-26 00:05 | 639232985300872416 |
|
3839 ms | 42.247.21.33 |