DNS response history for ns21.classicku.com

ns21.classicku.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 2026-08-25. For this date, NameServerHistory found 19 DNS check records, 19 successful responses, 0 failed responses, and 524 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 ns21.classicku.com.
Records on Selected Date

19

Historical checks stored for this nameserver on selected date

Average Latency

524 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-25 06:17

All timestamps shown in UTC

Latest Resolved IP on Selected Date

218.189.18.220

Most recently resolved hosting IP on selected date

Successful Responses

19

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 ns21.classicku.com

Showing DNS history for 2026-08-25 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
19 2026-08-25 06:17 639232346196373643
2213 ms 218.189.18.220
18 2026-08-25 06:00 639232336112370741
792 ms 218.189.18.220
17 2026-08-25 05:44 639232326146508970
1008 ms 218.189.18.220
16 2026-08-25 05:27 639232316189381720
425 ms 218.189.18.220
15 2026-08-25 05:10 639232306217998913
208 ms 218.189.18.220
14 2026-08-25 04:54 639232296255744174
210 ms 218.189.18.220
13 2026-08-25 04:37 639232286095760789
227 ms 218.189.18.220
12 2026-08-25 04:20 639232276086186273
214 ms 218.189.18.220
11 2026-08-25 04:03 639232265900986425
425 ms 218.189.18.220
10 2026-08-25 03:47 639232255723518075
208 ms 218.189.18.220
9 2026-08-25 03:29 639232245484452890
438 ms 218.189.18.220
8 2026-08-25 03:12 639232235157175331
420 ms 218.189.18.220
7 2026-08-25 02:19 639232203197189095
209 ms 218.189.18.220
6 2026-08-25 02:02 639232192844564298
217 ms 218.189.18.220
5 2026-08-25 01:45 639232182496008942
207 ms 218.189.18.220
4 2026-08-25 01:27 639232172197053132
1709 ms 218.189.18.220
3 2026-08-25 00:34 639232140250307418
217 ms 218.189.18.220
2 2026-08-25 00:17 639232129927860324
418 ms 218.189.18.220
1 2026-08-25 00:00 639232119551972438
200 ms 218.189.18.220