History for ns.cs.ac.kr
Domain: cs.ac.kr • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns.cs.ac.kr
ns.cs.ac.kr 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 2026-08-23. For this date, NameServerHistory found 76 DNS check records, 76 successful responses, 0 failed responses, and 420 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 ns.cs.ac.kr.
Records on Selected Date
76
Historical checks stored for this nameserver on selected date
Average Latency
420 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-23 23:58
All timestamps shown in UTC
Latest Resolved IP on Selected Date
221.161.21.21
Most recently resolved hosting IP on selected date
Successful Responses
76
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 ns.cs.ac.kr
Showing DNS history for 2026-08-23 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 |
|---|---|---|---|---|---|
| 76 | 2026-08-23 23:58 | 639231254406598736 |
|
493 ms | 221.161.21.21 |
| 75 | 2026-08-23 23:41 | 639231244697865594 |
|
494 ms | 221.161.21.21 |
| 74 | 2026-08-23 23:25 | 639231234893504693 |
|
495 ms | 221.161.21.21 |
| 73 | 2026-08-23 23:08 | 639231225024549139 |
|
497 ms | 221.161.21.21 |
| 72 | 2026-08-23 22:52 | 639231214931957622 |
|
517 ms | 221.161.21.21 |
| 71 | 2026-08-23 22:35 | 639231204962010549 |
|
507 ms | 221.161.21.21 |
| 70 | 2026-08-23 22:19 | 639231195170138463 |
|
240 ms | 221.161.21.21 |
| 69 | 2026-08-23 22:02 | 639231185235020577 |
|
492 ms | 221.161.21.21 |
| 68 | 2026-08-23 21:46 | 639231175558690075 |
|
500 ms | 221.161.21.21 |
| 67 | 2026-08-23 21:29 | 639231165610444012 |
|
251 ms | 221.161.21.21 |
| 66 | 2026-08-23 20:37 | 639231133806425363 |
|
260 ms | 221.161.21.21 |
| 65 | 2026-08-23 20:20 | 639231124203758023 |
|
256 ms | 221.161.21.21 |
| 64 | 2026-08-23 20:04 | 639231114428262706 |
|
492 ms | 221.161.21.21 |
| 63 | 2026-08-23 19:48 | 639231104662480065 |
|
558 ms | 221.161.21.21 |
| 62 | 2026-08-23 19:32 | 639231094840372018 |
|
258 ms | 221.161.21.21 |
| 61 | 2026-08-23 19:15 | 639231085024583224 |
|
257 ms | 221.161.21.21 |
| 60 | 2026-08-23 18:59 | 639231075257417427 |
|
262 ms | 221.161.21.21 |
| 59 | 2026-08-23 18:43 | 639231065516009503 |
|
498 ms | 221.161.21.21 |
| 58 | 2026-08-23 18:26 | 639231055805348837 |
|
259 ms | 221.161.21.21 |
| 57 | 2026-08-23 18:10 | 639231045980373765 |
|
263 ms | 221.161.21.21 |
| 56 | 2026-08-23 17:54 | 639231035984577527 |
|
502 ms | 221.161.21.21 |
| 55 | 2026-08-23 17:37 | 639231025928115303 |
|
502 ms | 221.161.21.21 |
| 54 | 2026-08-23 16:44 | 639230994250157583 |
|
256 ms | 221.161.21.21 |
| 53 | 2026-08-23 16:28 | 639230984476411369 |
|
500 ms | 221.161.21.21 |
| 52 | 2026-08-23 16:11 | 639230974838373450 |
|
496 ms | 221.161.21.21 |
| 51 | 2026-08-23 15:55 | 639230965244277645 |
|
250 ms | 221.161.21.21 |
| 50 | 2026-08-23 15:39 | 639230955522101820 |
|
252 ms | 221.161.21.21 |
| 49 | 2026-08-23 15:23 | 639230945754521603 |
|
483 ms | 221.161.21.21 |
| 48 | 2026-08-23 15:07 | 639230935852040504 |
|
503 ms | 221.161.21.21 |
| 47 | 2026-08-23 14:50 | 639230926222061048 |
|
279 ms | 221.161.21.21 |
| 46 | 2026-08-23 14:34 | 639230916449726907 |
|
518 ms | 221.161.21.21 |
| 45 | 2026-08-23 14:18 | 639230906595053086 |
|
254 ms | 221.161.21.21 |
| 44 | 2026-08-23 14:01 | 639230896680429441 |
|
245 ms | 221.161.21.21 |
| 43 | 2026-08-23 13:45 | 639230886630210965 |
|
250 ms | 221.161.21.21 |
| 42 | 2026-08-23 12:52 | 639230855430405719 |
|
509 ms | 221.161.21.21 |
| 41 | 2026-08-23 12:36 | 639230845707499136 |
|
505 ms | 221.161.21.21 |
| 40 | 2026-08-23 12:20 | 639230836186805419 |
|
496 ms | 221.161.21.21 |
| 39 | 2026-08-23 12:04 | 639230826493828316 |
|
493 ms | 221.161.21.21 |
| 38 | 2026-08-23 11:48 | 639230816817882996 |
|
241 ms | 221.161.21.21 |
| 37 | 2026-08-23 11:32 | 639230806933854189 |
|
260 ms | 221.161.21.21 |
| 36 | 2026-08-23 11:15 | 639230797120243854 |
|
245 ms | 221.161.21.21 |
| 35 | 2026-08-23 10:59 | 639230787310272840 |
|
496 ms | 221.161.21.21 |
| 34 | 2026-08-23 10:43 | 639230777600173142 |
|
283 ms | 221.161.21.21 |
| 33 | 2026-08-23 10:26 | 639230767665024593 |
|
273 ms | 221.161.21.21 |
| 32 | 2026-08-23 10:10 | 639230757720962293 |
|
504 ms | 221.161.21.21 |
| 31 | 2026-08-23 09:53 | 639230747722189784 |
|
252 ms | 221.161.21.21 |
| 30 | 2026-08-23 09:01 | 639230716313923480 |
|
261 ms | 221.161.21.21 |
| 29 | 2026-08-23 08:44 | 639230706813835990 |
|
503 ms | 221.161.21.21 |
| 28 | 2026-08-23 08:29 | 639230696871062203 |
|
254 ms | 221.161.21.21 |
| 27 | 2026-08-23 08:12 | 639230687142781616 |
|
279 ms | 221.161.21.21 |
| 26 | 2026-08-23 07:56 | 639230677432142227 |
|
629 ms | 221.161.21.21 |
| 25 | 2026-08-23 07:40 | 639230667686258061 |
|
490 ms | 221.161.21.21 |
| 24 | 2026-08-23 07:23 | 639230658039243685 |
|
242 ms | 221.161.21.21 |
| 23 | 2026-08-23 07:07 | 639230648468473803 |
|
499 ms | 221.161.21.21 |
| 22 | 2026-08-23 06:51 | 639230638829658294 |
|
509 ms | 221.161.21.21 |
| 21 | 2026-08-23 06:35 | 639230629247017617 |
|
512 ms | 221.161.21.21 |
| 20 | 2026-08-23 06:19 | 639230619625318239 |
|
492 ms | 221.161.21.21 |
| 19 | 2026-08-23 06:03 | 639230609697630264 |
|
490 ms | 221.161.21.21 |
| 18 | 2026-08-23 05:11 | 639230578570131864 |
|
489 ms | 221.161.21.21 |
| 17 | 2026-08-23 04:55 | 639230568958963168 |
|
256 ms | 221.161.21.21 |
| 16 | 2026-08-23 04:39 | 639230559287611211 |
|
527 ms | 221.161.21.21 |
| 15 | 2026-08-23 04:23 | 639230549524312030 |
|
276 ms | 221.161.21.21 |
| 14 | 2026-08-23 04:06 | 639230539739801669 |
|
255 ms | 221.161.21.21 |
| 13 | 2026-08-23 03:50 | 639230530084069375 |
|
486 ms | 221.161.21.21 |
| 12 | 2026-08-23 03:34 | 639230520362691441 |
|
247 ms | 221.161.21.21 |
| 11 | 2026-08-23 03:18 | 639230510677194518 |
|
491 ms | 221.161.21.21 |
| 10 | 2026-08-23 03:02 | 639230501156002646 |
|
496 ms | 221.161.21.21 |
| 9 | 2026-08-23 02:46 | 639230491502198541 |
|
484 ms | 221.161.21.21 |
| 8 | 2026-08-23 02:30 | 639230481860318494 |
|
2277 ms | 221.161.21.21 |
| 7 | 2026-08-23 02:13 | 639230471893008575 |
|
240 ms | 221.161.21.21 |
| 6 | 2026-08-23 01:20 | 639230440030877421 |
|
531 ms | 221.161.21.21 |
| 5 | 2026-08-23 01:04 | 639230430479725508 |
|
264 ms | 221.161.21.21 |
| 4 | 2026-08-23 00:48 | 639230420875160219 |
|
253 ms | 221.161.21.21 |
| 3 | 2026-08-23 00:32 | 639230411240692575 |
|
495 ms | 221.161.21.21 |
| 2 | 2026-08-23 00:16 | 639230401550806607 |
|
496 ms | 221.161.21.21 |
| 1 | 2026-08-23 00:00 | 639230391807229016 |
|
497 ms | 221.161.21.21 |