History for sys2.vdec.u-tokyo.ac.jp
Domain: u-tokyo.ac.jp • Tracking since 2026-08-04 23:25 UTC
DNS response history for sys2.vdec.u-tokyo.ac.jp
sys2.vdec.u-tokyo.ac.jp 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 36 DNS check records, 36 successful responses, 0 failed responses, and 555 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 sys2.vdec.u-tokyo.ac.jp.
Records on Selected Date
36
Historical checks stored for this nameserver on selected date
Average Latency
555 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 11:57
All timestamps shown in UTC
Latest Resolved IP on Selected Date
133.11.58.4
Most recently resolved hosting IP on selected date
Successful Responses
36
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 sys2.vdec.u-tokyo.ac.jp
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 |
|---|---|---|---|---|---|
| 36 | 2026-08-26 11:57 | 639233414056832719 |
|
9 ms | 133.11.58.4 |
| 35 | 2026-08-26 11:39 | 639233403515141099 |
|
501 ms | 133.11.58.4 |
| 34 | 2026-08-26 10:45 | 639233370841350248 |
|
513 ms | 133.11.58.4 |
| 33 | 2026-08-26 10:27 | 639233360361507238 |
|
285 ms | 133.11.58.4 |
| 32 | 2026-08-26 10:10 | 639233350067824371 |
|
784 ms | 133.11.58.4 |
| 31 | 2026-08-26 09:53 | 639233339545274518 |
|
513 ms | 133.11.58.4 |
| 30 | 2026-08-26 09:35 | 639233329214918079 |
|
780 ms | 133.11.58.4 |
| 29 | 2026-08-26 09:18 | 639233318749762337 |
|
507 ms | 133.11.58.4 |
| 28 | 2026-08-26 09:01 | 639233308387917838 |
|
296 ms | 133.11.58.4 |
| 27 | 2026-08-26 08:43 | 639233297961740122 |
|
538 ms | 133.11.58.4 |
| 26 | 2026-08-26 08:26 | 639233287487159094 |
|
294 ms | 133.11.58.4 |
| 25 | 2026-08-26 08:08 | 639233276995531707 |
|
805 ms | 133.11.58.4 |
| 24 | 2026-08-26 07:51 | 639233266521568229 |
|
548 ms | 133.11.58.4 |
| 23 | 2026-08-26 07:33 | 639233256081047431 |
|
820 ms | 133.11.58.4 |
| 22 | 2026-08-26 06:39 | 639233223620132921 |
|
802 ms | 133.11.58.4 |
| 21 | 2026-08-26 06:22 | 639233213287814244 |
|
293 ms | 133.11.58.4 |
| 20 | 2026-08-26 06:05 | 639233202925983161 |
|
1017 ms | 133.11.58.4 |
| 19 | 2026-08-26 05:48 | 639233192644780696 |
|
525 ms | 133.11.58.4 |
| 18 | 2026-08-26 05:30 | 639233182401183833 |
|
229 ms | 133.11.58.4 |
| 17 | 2026-08-26 05:13 | 639233172074181051 |
|
841 ms | 133.11.58.4 |
| 16 | 2026-08-26 04:56 | 639233161808421455 |
|
531 ms | 133.11.58.4 |
| 15 | 2026-08-26 04:39 | 639233151357344052 |
|
283 ms | 133.11.58.4 |
| 14 | 2026-08-26 04:22 | 639233141034116946 |
|
814 ms | 133.11.58.4 |
| 13 | 2026-08-26 04:04 | 639233130828334142 |
|
492 ms | 133.11.58.4 |
| 12 | 2026-08-26 03:47 | 639233120373450007 |
|
548 ms | 133.11.58.4 |
| 11 | 2026-08-26 03:30 | 639233110066216193 |
|
1063 ms | 133.11.58.4 |
| 10 | 2026-08-26 02:37 | 639233078065410564 |
|
469 ms | 133.11.58.4 |
| 9 | 2026-08-26 02:20 | 639233067787457832 |
|
1078 ms | 133.11.58.4 |
| 8 | 2026-08-26 02:02 | 639233057501801162 |
|
472 ms | 133.11.58.4 |
| 7 | 2026-08-26 01:45 | 639233047089431703 |
|
290 ms | 133.11.58.4 |
| 6 | 2026-08-26 01:28 | 639233036754790688 |
|
805 ms | 133.11.58.4 |
| 5 | 2026-08-26 01:11 | 639233026412602472 |
|
531 ms | 133.11.58.4 |
| 4 | 2026-08-26 00:53 | 639233016064066127 |
|
496 ms | 133.11.58.4 |
| 3 | 2026-08-26 00:36 | 639233005922655772 |
|
276 ms | 133.11.58.4 |
| 2 | 2026-08-26 00:19 | 639232995672256907 |
|
468 ms | 133.11.58.4 |
| 1 | 2026-08-26 00:02 | 639232985300872416 |
|
476 ms | 133.11.58.4 |