History for ns1.optotutor.com
Domain: optotutor.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns1.optotutor.com
ns1.optotutor.com 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 2026-08-14. For this date, NameServerHistory found 77 DNS check records, 76 successful responses, 1 failed responses, and 375 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.optotutor.com.
Records on Selected Date
77
Historical checks stored for this nameserver on selected date
Average Latency
375 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-14 23:48
All timestamps shown in UTC
Latest Resolved IP on Selected Date
217.154.54.136
Most recently resolved hosting IP on selected date
Successful Responses
76
Checks that returned a measurable response
Failed Responses
1
Checks with no response or no returned latency
Failure Rate
1%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for ns1.optotutor.com
Showing DNS history for 2026-08-14 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 |
|---|---|---|---|---|---|
| 77 | 2026-08-14 23:48 | 639223477272309567 |
|
61 ms | 217.154.54.136 |
| 76 | 2026-08-14 23:33 | 639223467876800215 |
|
2033 ms | 217.154.54.136 |
| 75 | 2026-08-14 23:17 | 639223458466733344 |
|
38 ms | 217.154.54.136 |
| 74 | 2026-08-14 23:01 | 639223449196197019 |
|
104 ms | 217.154.54.136 |
| 73 | 2026-08-14 22:46 | 639223439729973302 |
|
17 ms | 217.154.54.136 |
| 72 | 2026-08-14 22:30 | 639223430298973377 |
|
46 ms | 217.154.54.136 |
| 71 | 2026-08-14 22:14 | 639223420812183061 |
|
82 ms | 217.154.54.136 |
| 70 | 2026-08-14 21:58 | 639223411307572360 |
|
33 ms | 217.154.54.136 |
| 69 | 2026-08-14 21:43 | 639223401895099116 |
|
61 ms | 217.154.54.136 |
| 68 | 2026-08-14 20:49 | 639223370328282191 |
|
39 ms | 217.154.54.136 |
| 67 | 2026-08-14 20:34 | 639223361156898888 |
|
35 ms | 217.154.54.136 |
| 66 | 2026-08-14 20:18 | 639223351683501109 |
|
4040 ms | 217.154.54.136 |
| 65 | 2026-08-14 20:03 | 639223342485908428 |
|
126 ms | 217.154.54.136 |
| 64 | 2026-08-14 19:47 | 639223333113923772 |
|
2140 ms | 217.154.54.136 |
| 63 | 2026-08-14 19:32 | 639223323766820131 |
|
9 ms | 217.154.54.136 |
| 62 | 2026-08-14 19:16 | 639223314500774279 |
|
45 ms | 217.154.54.136 |
| 61 | 2026-08-14 19:01 | 639223305225877159 |
|
2055 ms | 217.154.54.136 |
| 60 | 2026-08-14 18:45 | 639223295834845965 |
|
62 ms | 217.154.54.136 |
| 59 | 2026-08-14 18:29 | 639223286312006616 |
|
63 ms | 217.154.54.136 |
| 58 | 2026-08-14 18:13 | 639223276659010988 |
|
34 ms | 217.154.54.136 |
| 57 | 2026-08-14 17:57 | 639223267203892251 |
|
76 ms | 217.154.54.136 |
| 56 | 2026-08-14 17:04 | 639223235652723921 |
|
2050 ms | 217.154.54.136 |
| 55 | 2026-08-14 16:48 | 639223226156684619 |
|
68 ms | 217.154.54.136 |
| 54 | 2026-08-14 16:32 | 639223216737677817 |
|
74 ms | 217.154.54.136 |
| 53 | 2026-08-14 16:17 | 639223207303987036 |
|
4059 ms | 217.154.54.136 |
| 52 | 2026-08-14 16:01 | 639223197972369650 |
|
31 ms | 217.154.54.136 |
| 51 | 2026-08-14 15:45 | 639223188476518684 |
|
2022 ms | 217.154.54.136 |
| 50 | 2026-08-14 15:29 | 639223179029668254 |
|
19 ms | 217.154.54.136 |
| 49 | 2026-08-14 15:14 | 639223169668684371 |
|
80 ms | 217.154.54.136 |
| 48 | 2026-08-14 14:58 | 639223160270013058 |
|
59 ms | 217.154.54.136 |
| 47 | 2026-08-14 14:42 | 639223150848386507 |
|
66 ms | 217.154.54.136 |
| 46 | 2026-08-14 14:27 | 639223141514160124 |
|
71 ms | 217.154.54.136 |
| 45 | 2026-08-14 14:11 | 639223131908897269 |
|
32 ms | 217.154.54.136 |
| 44 | 2026-08-14 13:19 | 639223100084750932 |
|
71 ms | 217.154.54.136 |
| 43 | 2026-08-14 13:03 | 639223090744921973 |
|
36 ms | 217.154.54.136 |
| 42 | 2026-08-14 12:47 | 639223081343134137 |
|
80 ms | 217.154.54.136 |
| 41 | 2026-08-14 12:31 | 639223071917003603 |
|
53 ms | 217.154.54.136 |
| 40 | 2026-08-14 12:16 | 639223062407395043 |
|
7 ms | 217.154.54.136 |
| 39 | 2026-08-14 12:00 | 639223052970600447 |
|
150 ms | 217.154.54.136 |
| 38 | 2026-08-14 11:44 | 639223043584242187 |
|
77 ms | 217.154.54.136 |
| 37 | 2026-08-14 11:29 | 639223034248611856 |
|
67 ms | 217.154.54.136 |
| 36 | 2026-08-14 11:13 | 639223024816175094 |
|
51 ms | 217.154.54.136 |
| 35 | 2026-08-14 10:57 | 639223015278211871 |
|
44 ms | 217.154.54.136 |
| 34 | 2026-08-14 10:41 | 639223005387568522 |
|
60 ms | 217.154.54.136 |
| 33 | 2026-08-14 10:25 | 639222995944735037 |
|
35 ms | 217.154.54.136 |
| 32 | 2026-08-14 09:32 | 639222964532402826 |
|
85 ms | 217.154.54.136 |
| 31 | 2026-08-14 09:16 | 639222955031971579 |
|
63 ms | 217.154.54.136 |
| 30 | 2026-08-14 09:00 | 639222945616352079 |
|
43 ms | 217.154.54.136 |
| 29 | 2026-08-14 08:45 | 639222936296615644 |
|
- | |
| 28 | 2026-08-14 08:29 | 639222926913151746 |
|
66 ms | 217.154.54.136 |
| 27 | 2026-08-14 08:13 | 639222917608375722 |
|
74 ms | 217.154.54.136 |
| 26 | 2026-08-14 07:58 | 639222908294448500 |
|
72 ms | 217.154.54.136 |
| 25 | 2026-08-14 07:42 | 639222898918389753 |
|
121 ms | 217.154.54.136 |
| 24 | 2026-08-14 07:27 | 639222889625876211 |
|
109 ms | 217.154.54.136 |
| 23 | 2026-08-14 07:11 | 639222880353707528 |
|
67 ms | 217.154.54.136 |
| 22 | 2026-08-14 06:56 | 639222871065611259 |
|
101 ms | 217.154.54.136 |
| 21 | 2026-08-14 06:40 | 639222861517093112 |
|
89 ms | 217.154.54.136 |
| 20 | 2026-08-14 05:48 | 639222830182717637 |
|
52 ms | 217.154.54.136 |
| 19 | 2026-08-14 05:32 | 639222820714737422 |
|
8 ms | 217.154.54.136 |
| 18 | 2026-08-14 05:16 | 639222811404284741 |
|
28 ms | 217.154.54.136 |
| 17 | 2026-08-14 05:00 | 639222801994952240 |
|
66 ms | 217.154.54.136 |
| 16 | 2026-08-14 04:45 | 639222792581940911 |
|
36 ms | 217.154.54.136 |
| 15 | 2026-08-14 04:29 | 639222783296631220 |
|
73 ms | 217.154.54.136 |
| 14 | 2026-08-14 04:14 | 639222773909528001 |
|
59 ms | 217.154.54.136 |
| 13 | 2026-08-14 03:58 | 639222764574707991 |
|
4059 ms | 217.154.54.136 |
| 12 | 2026-08-14 03:42 | 639222754982758281 |
|
33 ms | 217.154.54.136 |
| 11 | 2026-08-14 03:26 | 639222745650144239 |
|
84 ms | 217.154.54.136 |
| 10 | 2026-08-14 03:11 | 639222736060223018 |
|
80 ms | 217.154.54.136 |
| 9 | 2026-08-14 02:55 | 639222726529271510 |
|
51 ms | 217.154.54.136 |
| 8 | 2026-08-14 02:02 | 639222694791257846 |
|
43 ms | 217.154.54.136 |
| 7 | 2026-08-14 01:46 | 639222685350317820 |
|
54 ms | 217.154.54.136 |
| 6 | 2026-08-14 01:30 | 639222675895178560 |
|
78 ms | 217.154.54.136 |
| 5 | 2026-08-14 01:15 | 639222666344182743 |
|
67 ms | 217.154.54.136 |
| 4 | 2026-08-14 00:59 | 639222656762316965 |
|
69 ms | 217.154.54.136 |
| 3 | 2026-08-14 00:43 | 639222647109404695 |
|
34 ms | 217.154.54.136 |
| 2 | 2026-08-14 00:27 | 639222637659944389 |
|
60 ms | 217.154.54.136 |
| 1 | 2026-08-14 00:11 | 639222628151417313 |
|
2046 ms | 217.154.54.136 |