History for ns1.istt.ir
Domain: istt.ir • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns1.istt.ir
ns1.istt.ir 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 49 DNS check records, 49 successful responses, 0 failed responses, and 366 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.istt.ir.
Records on Selected Date
49
Historical checks stored for this nameserver on selected date
Average Latency
366 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 16:33
All timestamps shown in UTC
Latest Resolved IP on Selected Date
194.9.81.131
Most recently resolved hosting IP on selected date
Successful Responses
49
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.istt.ir
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 |
|---|---|---|---|---|---|
| 49 | 2026-08-26 16:33 | 639233582635086903 |
|
4 ms | 194.9.81.131 |
| 48 | 2026-08-26 16:16 | 639233572000374575 |
|
189 ms | 194.9.81.131 |
| 47 | 2026-08-26 15:58 | 639233561188633861 |
|
204 ms | 194.9.81.131 |
| 46 | 2026-08-26 15:40 | 639233550544357027 |
|
227 ms | 194.9.81.131 |
| 45 | 2026-08-26 14:46 | 639233517966053117 |
|
200 ms | 194.9.81.131 |
| 44 | 2026-08-26 14:28 | 639233507603253585 |
|
223 ms | 194.9.81.131 |
| 43 | 2026-08-26 14:11 | 639233497229039167 |
|
208 ms | 194.9.81.131 |
| 42 | 2026-08-26 13:53 | 639233486864546406 |
|
3 ms | 194.9.81.131 |
| 41 | 2026-08-26 13:36 | 639233476455174682 |
|
212 ms | 194.9.81.131 |
| 40 | 2026-08-26 13:19 | 639233466171592605 |
|
217 ms | 194.9.81.131 |
| 39 | 2026-08-26 13:02 | 639233455747096265 |
|
204 ms | 194.9.81.131 |
| 38 | 2026-08-26 12:44 | 639233445367152284 |
|
205 ms | 194.9.81.131 |
| 37 | 2026-08-26 12:27 | 639233434974187439 |
|
209 ms | 194.9.81.131 |
| 36 | 2026-08-26 12:10 | 639233424567558554 |
|
224 ms | 194.9.81.131 |
| 35 | 2026-08-26 11:52 | 639233414056832719 |
|
189 ms | 194.9.81.131 |
| 34 | 2026-08-26 11:35 | 639233403515141099 |
|
222 ms | 194.9.81.131 |
| 33 | 2026-08-26 10:40 | 639233370841350248 |
|
228 ms | 194.9.81.131 |
| 32 | 2026-08-26 10:23 | 639233360361507238 |
|
206 ms | 194.9.81.131 |
| 31 | 2026-08-26 10:05 | 639233350067824371 |
|
203 ms | 194.9.81.131 |
| 30 | 2026-08-26 09:48 | 639233339545274518 |
|
97 ms | 194.9.81.131 |
| 29 | 2026-08-26 09:31 | 639233329214918079 |
|
126 ms | 194.9.81.131 |
| 28 | 2026-08-26 09:13 | 639233318749762337 |
|
199 ms | 194.9.81.131 |
| 27 | 2026-08-26 08:56 | 639233308387917838 |
|
202 ms | 194.9.81.131 |
| 26 | 2026-08-26 08:39 | 639233297961740122 |
|
223 ms | 194.9.81.131 |
| 25 | 2026-08-26 08:21 | 639233287487159094 |
|
199 ms | 194.9.81.131 |
| 24 | 2026-08-26 08:04 | 639233276995531707 |
|
2101 ms | 194.9.81.131 |
| 23 | 2026-08-26 07:46 | 639233266521568229 |
|
188 ms | 194.9.81.131 |
| 22 | 2026-08-26 07:29 | 639233256081047431 |
|
119 ms | 194.9.81.131 |
| 21 | 2026-08-26 06:35 | 639233223620132921 |
|
188 ms | 194.9.81.131 |
| 20 | 2026-08-26 06:18 | 639233213287814244 |
|
2152 ms | 194.9.81.131 |
| 19 | 2026-08-26 06:00 | 639233202925983161 |
|
195 ms | 194.9.81.131 |
| 18 | 2026-08-26 05:43 | 639233192644780696 |
|
196 ms | 194.9.81.131 |
| 17 | 2026-08-26 05:26 | 639233182401183833 |
|
209 ms | 194.9.81.131 |
| 16 | 2026-08-26 05:09 | 639233172074181051 |
|
204 ms | 194.9.81.131 |
| 15 | 2026-08-26 04:52 | 639233161808421455 |
|
3 ms | 194.9.81.131 |
| 14 | 2026-08-26 04:34 | 639233151357344052 |
|
219 ms | 194.9.81.131 |
| 13 | 2026-08-26 04:17 | 639233141034116946 |
|
219 ms | 194.9.81.131 |
| 12 | 2026-08-26 04:00 | 639233130828334142 |
|
198 ms | 194.9.81.131 |
| 11 | 2026-08-26 03:43 | 639233120373450007 |
|
208 ms | 194.9.81.131 |
| 10 | 2026-08-26 03:25 | 639233110066216193 |
|
201 ms | 194.9.81.131 |
| 9 | 2026-08-26 02:32 | 639233078065410564 |
|
2009 ms | 194.9.81.131 |
| 8 | 2026-08-26 02:15 | 639233067787457832 |
|
191 ms | 194.9.81.131 |
| 7 | 2026-08-26 01:58 | 639233057501801162 |
|
2739 ms | 194.9.81.131 |
| 6 | 2026-08-26 01:41 | 639233047089431703 |
|
201 ms | 194.9.81.131 |
| 5 | 2026-08-26 01:23 | 639233036754790688 |
|
262 ms | 194.9.81.131 |
| 4 | 2026-08-26 01:06 | 639233026412602472 |
|
105 ms | 194.9.81.131 |
| 3 | 2026-08-26 00:49 | 639233016064066127 |
|
238 ms | 194.9.81.131 |
| 2 | 2026-08-26 00:32 | 639233005922655772 |
|
762 ms | 194.9.81.131 |
| 1 | 2026-08-26 00:15 | 639232995672256907 |
|
196 ms | 194.9.81.131 |