History for ns1.coolmail21.com
Domain: coolmail21.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns1.coolmail21.com
ns1.coolmail21.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 2026-08-26. For this date, NameServerHistory found 47 DNS check records, 47 successful responses, 0 failed responses, and 436 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.coolmail21.com.
Records on Selected Date
47
Historical checks stored for this nameserver on selected date
Average Latency
436 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 15:44
All timestamps shown in UTC
Latest Resolved IP on Selected Date
153.122.23.15
Most recently resolved hosting IP on selected date
Successful Responses
47
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.coolmail21.com
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 |
|---|---|---|---|---|---|
| 47 | 2026-08-26 15:44 | 639233550544357027 |
|
551 ms | 153.122.23.15 |
| 46 | 2026-08-26 14:50 | 639233517966053117 |
|
268 ms | 153.122.23.15 |
| 45 | 2026-08-26 14:33 | 639233507603253585 |
|
524 ms | 153.122.23.15 |
| 44 | 2026-08-26 14:15 | 639233497229039167 |
|
521 ms | 153.122.23.15 |
| 43 | 2026-08-26 13:58 | 639233486864546406 |
|
280 ms | 153.122.23.15 |
| 42 | 2026-08-26 13:41 | 639233476455174682 |
|
551 ms | 153.122.23.15 |
| 41 | 2026-08-26 13:23 | 639233466171592605 |
|
525 ms | 153.122.23.15 |
| 40 | 2026-08-26 13:06 | 639233455747096265 |
|
275 ms | 153.122.23.15 |
| 39 | 2026-08-26 12:49 | 639233445367152284 |
|
547 ms | 153.122.23.15 |
| 38 | 2026-08-26 12:32 | 639233434974187439 |
|
288 ms | 153.122.23.15 |
| 37 | 2026-08-26 12:14 | 639233424567558554 |
|
556 ms | 153.122.23.15 |
| 36 | 2026-08-26 11:57 | 639233414056832719 |
|
547 ms | 153.122.23.15 |
| 35 | 2026-08-26 11:39 | 639233403515141099 |
|
267 ms | 153.122.23.15 |
| 34 | 2026-08-26 10:45 | 639233370841350248 |
|
548 ms | 153.122.23.15 |
| 33 | 2026-08-26 10:27 | 639233360361507238 |
|
540 ms | 153.122.23.15 |
| 32 | 2026-08-26 10:10 | 639233350067824371 |
|
529 ms | 153.122.23.15 |
| 31 | 2026-08-26 09:53 | 639233339545274518 |
|
539 ms | 153.122.23.15 |
| 30 | 2026-08-26 09:35 | 639233329214918079 |
|
284 ms | 153.122.23.15 |
| 29 | 2026-08-26 09:18 | 639233318749762337 |
|
271 ms | 153.122.23.15 |
| 28 | 2026-08-26 09:00 | 639233308387917838 |
|
283 ms | 153.122.23.15 |
| 27 | 2026-08-26 08:43 | 639233297961740122 |
|
563 ms | 153.122.23.15 |
| 26 | 2026-08-26 08:26 | 639233287487159094 |
|
549 ms | 153.122.23.15 |
| 25 | 2026-08-26 08:08 | 639233276995531707 |
|
292 ms | 153.122.23.15 |
| 24 | 2026-08-26 07:51 | 639233266521568229 |
|
566 ms | 153.122.23.15 |
| 23 | 2026-08-26 07:33 | 639233256081047431 |
|
567 ms | 153.122.23.15 |
| 22 | 2026-08-26 06:39 | 639233223620132921 |
|
279 ms | 153.122.23.15 |
| 21 | 2026-08-26 06:22 | 639233213287814244 |
|
567 ms | 153.122.23.15 |
| 20 | 2026-08-26 06:05 | 639233202925983161 |
|
293 ms | 153.122.23.15 |
| 19 | 2026-08-26 05:48 | 639233192644780696 |
|
547 ms | 153.122.23.15 |
| 18 | 2026-08-26 05:30 | 639233182401183833 |
|
3 ms | 153.122.23.15 |
| 17 | 2026-08-26 05:13 | 639233172074181051 |
|
276 ms | 153.122.23.15 |
| 16 | 2026-08-26 04:56 | 639233161808421455 |
|
559 ms | 153.122.23.15 |
| 15 | 2026-08-26 04:39 | 639233151357344052 |
|
549 ms | 153.122.23.15 |
| 14 | 2026-08-26 04:22 | 639233141034116946 |
|
278 ms | 153.122.23.15 |
| 13 | 2026-08-26 04:04 | 639233130828334142 |
|
280 ms | 153.122.23.15 |
| 12 | 2026-08-26 03:47 | 639233120373450007 |
|
549 ms | 153.122.23.15 |
| 11 | 2026-08-26 03:30 | 639233110066216193 |
|
557 ms | 153.122.23.15 |
| 10 | 2026-08-26 02:37 | 639233078065410564 |
|
534 ms | 153.122.23.15 |
| 9 | 2026-08-26 02:20 | 639233067787457832 |
|
552 ms | 153.122.23.15 |
| 8 | 2026-08-26 02:02 | 639233057501801162 |
|
544 ms | 153.122.23.15 |
| 7 | 2026-08-26 01:45 | 639233047089431703 |
|
360 ms | 153.122.23.15 |
| 6 | 2026-08-26 01:28 | 639233036754790688 |
|
564 ms | 153.122.23.15 |
| 5 | 2026-08-26 01:11 | 639233026412602472 |
|
546 ms | 153.122.23.15 |
| 4 | 2026-08-26 00:53 | 639233016064066127 |
|
272 ms | 153.122.23.15 |
| 3 | 2026-08-26 00:36 | 639233005922655772 |
|
557 ms | 153.122.23.15 |
| 2 | 2026-08-26 00:19 | 639232995672256907 |
|
296 ms | 153.122.23.15 |
| 1 | 2026-08-26 00:02 | 639232985300872416 |
|
280 ms | 153.122.23.15 |