History for ns2.ultra.coins.tsukuba.ac.jp
Domain: tsukuba.ac.jp • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns2.ultra.coins.tsukuba.ac.jp
ns2.ultra.coins.tsukuba.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 2026-09-01. For this date, NameServerHistory found 36 DNS check records, 36 successful responses, 0 failed responses, and 855 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 ns2.ultra.coins.tsukuba.ac.jp.
Records on Selected Date
36
Historical checks stored for this nameserver on selected date
Average Latency
855 ms
Calculated from available response records
Latest Check on Selected Date
2026-09-01 12:32
All timestamps shown in UTC
Latest Resolved IP on Selected Date
163.220.236.13
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 ns2.ultra.coins.tsukuba.ac.jp
Showing DNS history for 2026-09-01 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 | 2026-09-01 12:32 | 639238617906743100 |
|
1068 ms | 163.220.236.13 |
| 35 | 2026-09-01 12:14 | 639238607506044626 |
|
1078 ms | 163.220.236.13 |
| 34 | 2026-09-01 11:57 | 639238597040761406 |
|
1052 ms | 163.220.236.13 |
| 33 | 2026-09-01 11:39 | 639238586261546969 |
|
836 ms | 163.220.236.13 |
| 32 | 2026-09-01 11:22 | 639238575587642333 |
|
1098 ms | 163.220.236.13 |
| 31 | 2026-09-01 10:27 | 639238543127398267 |
|
799 ms | 163.220.236.13 |
| 30 | 2026-09-01 10:10 | 639238532668234016 |
|
797 ms | 163.220.236.13 |
| 29 | 2026-09-01 09:52 | 639238522029321761 |
|
772 ms | 163.220.236.13 |
| 28 | 2026-09-01 09:35 | 639238511519050351 |
|
810 ms | 163.220.236.13 |
| 27 | 2026-09-01 09:17 | 639238500942239673 |
|
801 ms | 163.220.236.13 |
| 26 | 2026-09-01 08:59 | 639238490412377398 |
|
804 ms | 163.220.236.13 |
| 25 | 2026-09-01 08:42 | 639238479833203021 |
|
813 ms | 163.220.236.13 |
| 24 | 2026-09-01 08:24 | 639238469140507479 |
|
1098 ms | 163.220.236.13 |
| 23 | 2026-09-01 08:06 | 639238458443560361 |
|
799 ms | 163.220.236.13 |
| 22 | 2026-09-01 07:48 | 639238447694851502 |
|
1082 ms | 163.220.236.13 |
| 21 | 2026-09-01 07:31 | 639238436624109087 |
|
813 ms | 163.220.236.13 |
| 20 | 2026-09-01 07:12 | 639238425565611335 |
|
1050 ms | 163.220.236.13 |
| 19 | 2026-09-01 06:16 | 639238392250222581 |
|
820 ms | 163.220.236.13 |
| 18 | 2026-09-01 05:58 | 639238381322537831 |
|
839 ms | 163.220.236.13 |
| 17 | 2026-09-01 05:40 | 639238370248186084 |
|
828 ms | 163.220.236.13 |
| 16 | 2026-09-01 05:22 | 639238359264687845 |
|
1098 ms | 163.220.236.13 |
| 15 | 2026-09-01 05:03 | 639238348534621818 |
|
1106 ms | 163.220.236.13 |
| 14 | 2026-09-01 04:45 | 639238337725739433 |
|
816 ms | 163.220.236.13 |
| 13 | 2026-09-01 04:27 | 639238326844749368 |
|
818 ms | 163.220.236.13 |
| 12 | 2026-09-01 04:09 | 639238315792024737 |
|
807 ms | 163.220.236.13 |
| 11 | 2026-09-01 03:51 | 639238304931064768 |
|
702 ms | 163.220.236.13 |
| 10 | 2026-09-01 03:33 | 639238294131483803 |
|
719 ms | 163.220.236.13 |
| 9 | 2026-09-01 03:15 | 639238283314985519 |
|
945 ms | 163.220.236.13 |
| 8 | 2026-09-01 02:57 | 639238272374093187 |
|
707 ms | 163.220.236.13 |
| 7 | 2026-09-01 02:03 | 639238240032549922 |
|
715 ms | 163.220.236.13 |
| 6 | 2026-09-01 01:45 | 639238229204177368 |
|
689 ms | 163.220.236.13 |
| 5 | 2026-09-01 01:27 | 639238218326150282 |
|
736 ms | 163.220.236.13 |
| 4 | 2026-09-01 01:09 | 639238207574700853 |
|
726 ms | 163.220.236.13 |
| 3 | 2026-09-01 00:51 | 639238196660283915 |
|
726 ms | 163.220.236.13 |
| 2 | 2026-09-01 00:32 | 639238185782358546 |
|
696 ms | 163.220.236.13 |
| 1 | 2026-09-01 00:14 | 639238175054391781 |
|
722 ms | 163.220.236.13 |