History for ctn-extdns-01.samrc.ac.za
Domain: samrc.ac.za • Tracking since 2026-08-04 23:25 UTC
DNS response history for ctn-extdns-01.samrc.ac.za
ctn-extdns-01.samrc.ac.za 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 36 DNS check records, 36 successful responses, 0 failed responses, and 552 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 ctn-extdns-01.samrc.ac.za.
Records on Selected Date
36
Historical checks stored for this nameserver on selected date
Average Latency
552 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 12:10
All timestamps shown in UTC
Latest Resolved IP on Selected Date
196.21.144.200
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 ctn-extdns-01.samrc.ac.za
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 |
|---|---|---|---|---|---|
| 36 | 2026-08-26 12:10 | 639233424567558554 |
|
387 ms | 196.21.144.200 |
| 35 | 2026-08-26 11:53 | 639233414056832719 |
|
387 ms | 196.21.144.200 |
| 34 | 2026-08-26 11:35 | 639233403515141099 |
|
2033 ms | 196.21.144.200 |
| 33 | 2026-08-26 10:40 | 639233370841350248 |
|
388 ms | 196.21.144.200 |
| 32 | 2026-08-26 10:23 | 639233360361507238 |
|
1704 ms | 196.21.144.200 |
| 31 | 2026-08-26 10:06 | 639233350067824371 |
|
561 ms | 196.21.144.200 |
| 30 | 2026-08-26 09:49 | 639233339545274518 |
|
2177 ms | 196.21.144.200 |
| 29 | 2026-08-26 09:31 | 639233329214918079 |
|
2058 ms | 196.21.144.200 |
| 28 | 2026-08-26 09:14 | 639233318749762337 |
|
389 ms | 196.21.144.200 |
| 27 | 2026-08-26 08:56 | 639233308387917838 |
|
399 ms | 196.21.144.200 |
| 26 | 2026-08-26 08:39 | 639233297961740122 |
|
195 ms | 196.21.144.200 |
| 25 | 2026-08-26 08:22 | 639233287487159094 |
|
2349 ms | 196.21.144.200 |
| 24 | 2026-08-26 08:04 | 639233276995531707 |
|
256 ms | 196.21.144.200 |
| 23 | 2026-08-26 07:47 | 639233266521568229 |
|
390 ms | 196.21.144.200 |
| 22 | 2026-08-26 07:29 | 639233256081047431 |
|
397 ms | 196.21.144.200 |
| 21 | 2026-08-26 06:35 | 639233223620132921 |
|
387 ms | 196.21.144.200 |
| 20 | 2026-08-26 06:18 | 639233213287814244 |
|
395 ms | 196.21.144.200 |
| 19 | 2026-08-26 06:01 | 639233202925983161 |
|
460 ms | 196.21.144.200 |
| 18 | 2026-08-26 05:43 | 639233192644780696 |
|
7 ms | 196.21.144.200 |
| 17 | 2026-08-26 05:26 | 639233182401183833 |
|
194 ms | 196.21.144.200 |
| 16 | 2026-08-26 05:09 | 639233172074181051 |
|
388 ms | 196.21.144.200 |
| 15 | 2026-08-26 04:52 | 639233161808421455 |
|
4 ms | 196.21.144.200 |
| 14 | 2026-08-26 04:35 | 639233151357344052 |
|
389 ms | 196.21.144.200 |
| 13 | 2026-08-26 04:17 | 639233141034116946 |
|
386 ms | 196.21.144.200 |
| 12 | 2026-08-26 04:00 | 639233130828334142 |
|
3 ms | 196.21.144.200 |
| 11 | 2026-08-26 03:43 | 639233120373450007 |
|
8 ms | 196.21.144.200 |
| 10 | 2026-08-26 03:26 | 639233110066216193 |
|
559 ms | 196.21.144.200 |
| 9 | 2026-08-26 02:33 | 639233078065410564 |
|
396 ms | 196.21.144.200 |
| 8 | 2026-08-26 02:15 | 639233067787457832 |
|
391 ms | 196.21.144.200 |
| 7 | 2026-08-26 01:58 | 639233057501801162 |
|
400 ms | 196.21.144.200 |
| 6 | 2026-08-26 01:41 | 639233047089431703 |
|
397 ms | 196.21.144.200 |
| 5 | 2026-08-26 01:24 | 639233036754790688 |
|
7 ms | 196.21.144.200 |
| 4 | 2026-08-26 01:07 | 639233026412602472 |
|
392 ms | 196.21.144.200 |
| 3 | 2026-08-26 00:49 | 639233016064066127 |
|
229 ms | 196.21.144.200 |
| 2 | 2026-08-26 00:32 | 639233005922655772 |
|
8 ms | 196.21.144.200 |
| 1 | 2026-08-26 00:15 | 639232995672256907 |
|
394 ms | 196.21.144.200 |