History for sys1.vdec.u-tokyo.ac.jp
Domain: u-tokyo.ac.jp • Tracking since 2026-08-04 23:25 UTC
DNS response history for sys1.vdec.u-tokyo.ac.jp
sys1.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 20 DNS check records, 20 successful responses, 0 failed responses, and 562 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 sys1.vdec.u-tokyo.ac.jp.
Records on Selected Date
20
Historical checks stored for this nameserver on selected date
Average Latency
562 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 06:05
All timestamps shown in UTC
Latest Resolved IP on Selected Date
133.11.58.3
Most recently resolved hosting IP on selected date
Successful Responses
20
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 sys1.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 |
|---|---|---|---|---|---|
| 20 | 2026-08-26 06:05 | 639233202925983161 |
|
468 ms | 133.11.58.3 |
| 19 | 2026-08-26 05:47 | 639233192644780696 |
|
599 ms | 133.11.58.3 |
| 18 | 2026-08-26 05:30 | 639233182401183833 |
|
291 ms | 133.11.58.3 |
| 17 | 2026-08-26 05:13 | 639233172074181051 |
|
465 ms | 133.11.58.3 |
| 16 | 2026-08-26 04:56 | 639233161808421455 |
|
544 ms | 133.11.58.3 |
| 15 | 2026-08-26 04:39 | 639233151357344052 |
|
480 ms | 133.11.58.3 |
| 14 | 2026-08-26 04:21 | 639233141034116946 |
|
2530 ms | 133.11.58.3 |
| 13 | 2026-08-26 04:04 | 639233130828334142 |
|
502 ms | 133.11.58.3 |
| 12 | 2026-08-26 03:47 | 639233120373450007 |
|
297 ms | 133.11.58.3 |
| 11 | 2026-08-26 03:30 | 639233110066216193 |
|
504 ms | 133.11.58.3 |
| 10 | 2026-08-26 02:36 | 639233078065410564 |
|
257 ms | 133.11.58.3 |
| 9 | 2026-08-26 02:19 | 639233067787457832 |
|
1036 ms | 133.11.58.3 |
| 8 | 2026-08-26 02:02 | 639233057501801162 |
|
298 ms | 133.11.58.3 |
| 7 | 2026-08-26 01:45 | 639233047089431703 |
|
248 ms | 133.11.58.3 |
| 6 | 2026-08-26 01:28 | 639233036754790688 |
|
515 ms | 133.11.58.3 |
| 5 | 2026-08-26 01:10 | 639233026412602472 |
|
510 ms | 133.11.58.3 |
| 4 | 2026-08-26 00:53 | 639233016064066127 |
|
299 ms | 133.11.58.3 |
| 3 | 2026-08-26 00:36 | 639233005922655772 |
|
675 ms | 133.11.58.3 |
| 2 | 2026-08-26 00:19 | 639232995672256907 |
|
467 ms | 133.11.58.3 |
| 1 | 2026-08-26 00:02 | 639232985300872416 |
|
256 ms | 133.11.58.3 |