History for dns1.cupk.edu.cn
Domain: cupk.edu.cn • Tracking since 2026-08-04 23:25 UTC
DNS response history for dns1.cupk.edu.cn
dns1.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 2026-08-25. For this date, NameServerHistory found 64 DNS check records, 64 successful responses, 0 failed responses, and 2690 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.cupk.edu.cn.
Records on Selected Date
64
Historical checks stored for this nameserver on selected date
Average Latency
2690 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-25 21:44
All timestamps shown in UTC
Latest Resolved IP on Selected Date
42.247.21.32
Most recently resolved hosting IP on selected date
Successful Responses
64
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.cupk.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 |
|---|---|---|---|---|---|
| 64 | 2026-08-25 21:44 | 639232900747078453 |
|
2032 ms | 42.247.21.32 |
| 63 | 2026-08-25 21:26 | 639232890389222534 |
|
2320 ms | 42.247.21.32 |
| 62 | 2026-08-25 21:09 | 639232880143390843 |
|
1512 ms | 42.247.21.32 |
| 61 | 2026-08-25 20:52 | 639232869755024069 |
|
1999 ms | 42.247.21.32 |
| 60 | 2026-08-25 20:35 | 639232859355940346 |
|
1731 ms | 42.247.21.32 |
| 59 | 2026-08-25 20:18 | 639232848992244953 |
|
2282 ms | 42.247.21.32 |
| 58 | 2026-08-25 20:00 | 639232838596478500 |
|
1730 ms | 42.247.21.32 |
| 57 | 2026-08-25 19:43 | 639232828175327683 |
|
2325 ms | 42.247.21.32 |
| 56 | 2026-08-25 19:26 | 639232817798330473 |
|
2319 ms | 42.247.21.32 |
| 55 | 2026-08-25 18:31 | 639232785462407552 |
|
4331 ms | 42.247.21.32 |
| 54 | 2026-08-25 18:14 | 639232775177487032 |
|
1259 ms | 42.247.21.32 |
| 53 | 2026-08-25 17:57 | 639232764991087115 |
|
2321 ms | 42.247.21.32 |
| 52 | 2026-08-25 17:40 | 639232754842971478 |
|
1764 ms | 42.247.21.32 |
| 51 | 2026-08-25 17:23 | 639232744455159107 |
|
3832 ms | 42.247.21.32 |
| 50 | 2026-08-25 17:06 | 639232734145178231 |
|
4320 ms | 42.247.21.32 |
| 49 | 2026-08-25 16:49 | 639232723827874402 |
|
5262 ms | 42.247.21.32 |
| 48 | 2026-08-25 16:32 | 639232713533011892 |
|
3783 ms | 42.247.21.32 |
| 47 | 2026-08-25 16:15 | 639232703065318207 |
|
4325 ms | 42.247.21.32 |
| 46 | 2026-08-25 15:57 | 639232692629559470 |
|
3776 ms | 42.247.21.32 |
| 45 | 2026-08-25 15:40 | 639232682238836475 |
|
3813 ms | 42.247.21.32 |
| 44 | 2026-08-25 15:22 | 639232671787004306 |
|
2321 ms | 42.247.21.32 |
| 43 | 2026-08-25 14:28 | 639232638994329666 |
|
4359 ms | 42.247.21.32 |
| 42 | 2026-08-25 14:10 | 639232628614783237 |
|
2296 ms | 42.247.21.32 |
| 41 | 2026-08-25 13:53 | 639232618360728578 |
|
1512 ms | 42.247.21.32 |
| 40 | 2026-08-25 13:36 | 639232608016476376 |
|
2337 ms | 42.247.21.32 |
| 39 | 2026-08-25 13:19 | 639232597643611557 |
|
3828 ms | 42.247.21.32 |
| 38 | 2026-08-25 13:01 | 639232587225721862 |
|
1276 ms | 42.247.21.32 |
| 37 | 2026-08-25 12:44 | 639232576780683689 |
|
2367 ms | 42.247.21.32 |
| 36 | 2026-08-25 12:27 | 639232566381512620 |
|
2530 ms | 42.247.21.32 |
| 35 | 2026-08-25 12:09 | 639232556111768563 |
|
2286 ms | 42.247.21.32 |
| 34 | 2026-08-25 11:52 | 639232545839529039 |
|
1746 ms | 42.247.21.32 |
| 33 | 2026-08-25 11:35 | 639232535349285207 |
|
2322 ms | 42.247.21.32 |
| 32 | 2026-08-25 11:18 | 639232524938080723 |
|
4376 ms | 42.247.21.32 |
| 31 | 2026-08-25 10:24 | 639232492740373468 |
|
1297 ms | 42.247.21.32 |
| 30 | 2026-08-25 10:06 | 639232482235303141 |
|
1797 ms | 42.247.21.32 |
| 29 | 2026-08-25 09:49 | 639232471861770303 |
|
2370 ms | 42.247.21.32 |
| 28 | 2026-08-25 09:32 | 639232461630217327 |
|
4372 ms | 42.247.21.32 |
| 27 | 2026-08-25 09:15 | 639232451282965990 |
|
1267 ms | 42.247.21.32 |
| 26 | 2026-08-25 08:57 | 639232440814614938 |
|
2342 ms | 42.247.21.32 |
| 25 | 2026-08-25 08:40 | 639232430410720425 |
|
1761 ms | 42.247.21.32 |
| 24 | 2026-08-25 08:23 | 639232420003096185 |
|
2348 ms | 42.247.21.32 |
| 23 | 2026-08-25 08:05 | 639232409467287444 |
|
4333 ms | 42.247.21.32 |
| 22 | 2026-08-25 07:48 | 639232399077195997 |
|
2333 ms | 42.247.21.32 |
| 21 | 2026-08-25 07:30 | 639232388731528337 |
|
2828 ms | 42.247.21.32 |
| 20 | 2026-08-25 07:13 | 639232378288598612 |
|
4325 ms | 42.247.21.32 |
| 19 | 2026-08-25 06:19 | 639232346196373643 |
|
2325 ms | 42.247.21.32 |
| 18 | 2026-08-25 06:02 | 639232336112370741 |
|
4327 ms | 42.247.21.32 |
| 17 | 2026-08-25 05:45 | 639232326146508970 |
|
2322 ms | 42.247.21.32 |
| 16 | 2026-08-25 05:29 | 639232316189381720 |
|
4333 ms | 42.247.21.32 |
| 15 | 2026-08-25 05:12 | 639232306217998913 |
|
3782 ms | 42.247.21.32 |
| 14 | 2026-08-25 04:56 | 639232296255744174 |
|
1759 ms | 42.247.21.32 |
| 13 | 2026-08-25 04:39 | 639232286095760789 |
|
2285 ms | 42.247.21.32 |
| 12 | 2026-08-25 04:22 | 639232276086186273 |
|
4331 ms | 42.247.21.32 |
| 11 | 2026-08-25 04:05 | 639232265900986425 |
|
4328 ms | 42.247.21.32 |
| 10 | 2026-08-25 03:49 | 639232255723518075 |
|
2341 ms | 42.247.21.32 |
| 9 | 2026-08-25 03:31 | 639232245484452890 |
|
2700 ms | 42.247.21.32 |
| 8 | 2026-08-25 03:15 | 639232235157175331 |
|
2325 ms | 42.247.21.32 |
| 7 | 2026-08-25 02:21 | 639232203197189095 |
|
4323 ms | 42.247.21.32 |
| 6 | 2026-08-25 02:04 | 639232192844564298 |
|
2316 ms | 42.247.21.32 |
| 5 | 2026-08-25 01:47 | 639232182496008942 |
|
256 ms | 42.247.21.32 |
| 4 | 2026-08-25 01:29 | 639232172197053132 |
|
1727 ms | 42.247.21.32 |
| 3 | 2026-08-25 00:36 | 639232140250307418 |
|
2327 ms | 42.247.21.32 |
| 2 | 2026-08-25 00:19 | 639232129927860324 |
|
1256 ms | 42.247.21.32 |
| 1 | 2026-08-25 00:02 | 639232119551972438 |
|
821 ms | 42.247.21.32 |