History for ns1.ultra.coins.tsukuba.ac.jp
Domain: tsukuba.ac.jp • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns1.ultra.coins.tsukuba.ac.jp
ns1.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 43 DNS check records, 43 successful responses, 0 failed responses, and 833 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 ns1.ultra.coins.tsukuba.ac.jp.
Records on Selected Date
43
Historical checks stored for this nameserver on selected date
Average Latency
833 ms
Calculated from available response records
Latest Check on Selected Date
2026-09-01 14:34
All timestamps shown in UTC
Latest Resolved IP on Selected Date
163.220.236.12
Most recently resolved hosting IP on selected date
Successful Responses
43
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 ns1.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 |
|---|---|---|---|---|---|
| 43 | 2026-09-01 14:34 | 639238690993873259 |
|
825 ms | 163.220.236.12 |
| 42 | 2026-09-01 14:16 | 639238680658140472 |
|
1092 ms | 163.220.236.12 |
| 41 | 2026-09-01 13:59 | 639238670295233158 |
|
760 ms | 163.220.236.12 |
| 40 | 2026-09-01 13:42 | 639238659704397018 |
|
1077 ms | 163.220.236.12 |
| 39 | 2026-09-01 13:24 | 639238649308394463 |
|
1110 ms | 163.220.236.12 |
| 38 | 2026-09-01 13:07 | 639238638904588883 |
|
788 ms | 163.220.236.12 |
| 37 | 2026-09-01 12:49 | 639238628486902752 |
|
818 ms | 163.220.236.12 |
| 36 | 2026-09-01 12:32 | 639238617906743100 |
|
1127 ms | 163.220.236.12 |
| 35 | 2026-09-01 12:14 | 639238607506044626 |
|
1004 ms | 163.220.236.12 |
| 34 | 2026-09-01 11:57 | 639238597040761406 |
|
1002 ms | 163.220.236.12 |
| 33 | 2026-09-01 11:39 | 639238586261546969 |
|
759 ms | 163.220.236.12 |
| 32 | 2026-09-01 11:22 | 639238575587642333 |
|
807 ms | 163.220.236.12 |
| 31 | 2026-09-01 10:27 | 639238543127398267 |
|
821 ms | 163.220.236.12 |
| 30 | 2026-09-01 10:10 | 639238532668234016 |
|
807 ms | 163.220.236.12 |
| 29 | 2026-09-01 09:52 | 639238522029321761 |
|
701 ms | 163.220.236.12 |
| 28 | 2026-09-01 09:35 | 639238511519050351 |
|
745 ms | 163.220.236.12 |
| 27 | 2026-09-01 09:17 | 639238500942239673 |
|
805 ms | 163.220.236.12 |
| 26 | 2026-09-01 08:59 | 639238490412377398 |
|
808 ms | 163.220.236.12 |
| 25 | 2026-09-01 08:42 | 639238479833203021 |
|
775 ms | 163.220.236.12 |
| 24 | 2026-09-01 08:24 | 639238469140507479 |
|
788 ms | 163.220.236.12 |
| 23 | 2026-09-01 08:06 | 639238458443560361 |
|
717 ms | 163.220.236.12 |
| 22 | 2026-09-01 07:48 | 639238447694851502 |
|
1005 ms | 163.220.236.12 |
| 21 | 2026-09-01 07:31 | 639238436624109087 |
|
1118 ms | 163.220.236.12 |
| 20 | 2026-09-01 07:12 | 639238425565611335 |
|
809 ms | 163.220.236.12 |
| 19 | 2026-09-01 06:16 | 639238392250222581 |
|
741 ms | 163.220.236.12 |
| 18 | 2026-09-01 05:58 | 639238381322537831 |
|
1068 ms | 163.220.236.12 |
| 17 | 2026-09-01 05:40 | 639238370248186084 |
|
814 ms | 163.220.236.12 |
| 16 | 2026-09-01 05:22 | 639238359264687845 |
|
793 ms | 163.220.236.12 |
| 15 | 2026-09-01 05:03 | 639238348534621818 |
|
830 ms | 163.220.236.12 |
| 14 | 2026-09-01 04:45 | 639238337725739433 |
|
833 ms | 163.220.236.12 |
| 13 | 2026-09-01 04:27 | 639238326844749368 |
|
1052 ms | 163.220.236.12 |
| 12 | 2026-09-01 04:09 | 639238315792024737 |
|
703 ms | 163.220.236.12 |
| 11 | 2026-09-01 03:51 | 639238304931064768 |
|
725 ms | 163.220.236.12 |
| 10 | 2026-09-01 03:33 | 639238294131483803 |
|
726 ms | 163.220.236.12 |
| 9 | 2026-09-01 03:15 | 639238283314985519 |
|
727 ms | 163.220.236.12 |
| 8 | 2026-09-01 02:57 | 639238272374093187 |
|
721 ms | 163.220.236.12 |
| 7 | 2026-09-01 02:03 | 639238240032549922 |
|
726 ms | 163.220.236.12 |
| 6 | 2026-09-01 01:45 | 639238229204177368 |
|
706 ms | 163.220.236.12 |
| 5 | 2026-09-01 01:27 | 639238218326150282 |
|
730 ms | 163.220.236.12 |
| 4 | 2026-09-01 01:09 | 639238207574700853 |
|
708 ms | 163.220.236.12 |
| 3 | 2026-09-01 00:51 | 639238196660283915 |
|
720 ms | 163.220.236.12 |
| 2 | 2026-09-01 00:32 | 639238185782358546 |
|
718 ms | 163.220.236.12 |
| 1 | 2026-09-01 00:14 | 639238175054391781 |
|
730 ms | 163.220.236.12 |