History for dns2.qdbhu.edu.cn
Domain: qdbhu.edu.cn • Tracking since 2026-08-04 23:25 UTC
DNS response history for dns2.qdbhu.edu.cn
dns2.qdbhu.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 2026-08-25. For this date, NameServerHistory found 38 DNS check records, 36 successful responses, 2 failed responses, and 1986 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.qdbhu.edu.cn.
Records on Selected Date
38
Historical checks stored for this nameserver on selected date
Average Latency
1986 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-25 13:01
All timestamps shown in UTC
Latest Resolved IP on Selected Date
121.251.210.3
Most recently resolved hosting IP on selected date
Successful Responses
36
Checks that returned a measurable response
Failed Responses
2
Checks with no response or no returned latency
Failure Rate
5%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for dns2.qdbhu.edu.cn
Showing DNS history for 2026-08-25 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 |
|---|---|---|---|---|---|
| 38 | 2026-08-25 13:01 | 639232587225721862 |
|
2296 ms | 121.251.210.3 |
| 37 | 2026-08-25 12:44 | 639232576780683689 |
|
4586 ms | 121.251.210.3 |
| 36 | 2026-08-25 12:26 | 639232566381512620 |
|
2686 ms | 121.251.210.3 |
| 35 | 2026-08-25 12:09 | 639232556111768563 |
|
3773 ms | 121.251.210.3 |
| 34 | 2026-08-25 11:52 | 639232545839529039 |
|
- | |
| 33 | 2026-08-25 11:35 | 639232535349285207 |
|
1318 ms | 121.251.210.3 |
| 32 | 2026-08-25 11:17 | 639232524938080723 |
|
4297 ms | 121.251.210.3 |
| 31 | 2026-08-25 10:23 | 639232492740373468 |
|
2313 ms | 121.251.210.3 |
| 30 | 2026-08-25 10:06 | 639232482235303141 |
|
3798 ms | 121.251.210.3 |
| 29 | 2026-08-25 09:49 | 639232471861770303 |
|
1318 ms | 121.251.210.3 |
| 28 | 2026-08-25 09:32 | 639232461630217327 |
|
1320 ms | 121.251.210.3 |
| 27 | 2026-08-25 09:14 | 639232451282965990 |
|
1865 ms | 121.251.210.3 |
| 26 | 2026-08-25 08:57 | 639232440814614938 |
|
2252 ms | 121.251.210.3 |
| 25 | 2026-08-25 08:40 | 639232430410720425 |
|
1300 ms | 121.251.210.3 |
| 24 | 2026-08-25 08:22 | 639232420003096185 |
|
1313 ms | 121.251.210.3 |
| 23 | 2026-08-25 08:05 | 639232409467287444 |
|
1250 ms | 121.251.210.3 |
| 22 | 2026-08-25 07:48 | 639232399077195997 |
|
3807 ms | 121.251.210.3 |
| 21 | 2026-08-25 07:30 | 639232388731528337 |
|
2293 ms | 121.251.210.3 |
| 20 | 2026-08-25 07:13 | 639232378288598612 |
|
592 ms | 121.251.210.3 |
| 19 | 2026-08-25 06:19 | 639232346196373643 |
|
1182 ms | 121.251.210.3 |
| 18 | 2026-08-25 06:02 | 639232336112370741 |
|
1878 ms | 121.251.210.3 |
| 17 | 2026-08-25 05:45 | 639232326146508970 |
|
3809 ms | 121.251.210.3 |
| 16 | 2026-08-25 05:29 | 639232316189381720 |
|
1777 ms | 121.251.210.3 |
| 15 | 2026-08-25 05:12 | 639232306217998913 |
|
1314 ms | 121.251.210.3 |
| 14 | 2026-08-25 04:56 | 639232296255744174 |
|
- | |
| 13 | 2026-08-25 04:39 | 639232286095760789 |
|
1071 ms | 121.251.210.3 |
| 12 | 2026-08-25 04:22 | 639232276086186273 |
|
2667 ms | 121.251.210.3 |
| 11 | 2026-08-25 04:05 | 639232265900986425 |
|
802 ms | 121.251.210.3 |
| 10 | 2026-08-25 03:48 | 639232255723518075 |
|
1319 ms | 121.251.210.3 |
| 9 | 2026-08-25 03:31 | 639232245484452890 |
|
2415 ms | 121.251.210.3 |
| 8 | 2026-08-25 03:14 | 639232235157175331 |
|
2653 ms | 121.251.210.3 |
| 7 | 2026-08-25 02:21 | 639232203197189095 |
|
245 ms | 121.251.210.3 |
| 6 | 2026-08-25 02:04 | 639232192844564298 |
|
1317 ms | 121.251.210.3 |
| 5 | 2026-08-25 01:46 | 639232182496008942 |
|
2469 ms | 121.251.210.3 |
| 4 | 2026-08-25 01:29 | 639232172197053132 |
|
681 ms | 121.251.210.3 |
| 3 | 2026-08-25 00:36 | 639232140250307418 |
|
249 ms | 121.251.210.3 |
| 2 | 2026-08-25 00:19 | 639232129927860324 |
|
2570 ms | 121.251.210.3 |
| 1 | 2026-08-25 00:02 | 639232119551972438 |
|
692 ms | 121.251.210.3 |