History for ns21.dns.cf-ns.com
Domain: cf-ns.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns21.dns.cf-ns.com
ns21.dns.cf-ns.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 2026-08-24. For this date, NameServerHistory found 26 DNS check records, 26 successful responses, 0 failed responses, and 326 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.dns.cf-ns.com.
Records on Selected Date
26
Historical checks stored for this nameserver on selected date
Average Latency
326 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-24 10:41
All timestamps shown in UTC
Latest Resolved IP on Selected Date
116.198.165.54
Most recently resolved hosting IP on selected date
Successful Responses
26
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.dns.cf-ns.com
Showing DNS history for 2026-08-24 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 |
|---|---|---|---|---|---|
| 26 | 2026-08-24 10:41 | 639231641791249939 |
|
222 ms | 116.198.165.54 |
| 25 | 2026-08-24 10:25 | 639231631866211033 |
|
227 ms | 116.198.49.187 |
| 24 | 2026-08-24 10:08 | 639231621644955316 |
|
216 ms | 114.67.192.245 |
| 23 | 2026-08-24 09:51 | 639231611478799259 |
|
266 ms | 116.198.165.54 |
| 22 | 2026-08-24 08:59 | 639231579923718211 |
|
221 ms | 116.198.49.187 |
| 21 | 2026-08-24 08:42 | 639231569810702936 |
|
289 ms | 116.198.49.187 |
| 20 | 2026-08-24 08:25 | 639231559762411619 |
|
248 ms | 116.198.165.54 |
| 19 | 2026-08-24 08:08 | 639231549663595407 |
|
239 ms | 114.67.192.245 |
| 18 | 2026-08-24 07:15 | 639231518076817246 |
|
220 ms | 116.198.165.54 |
| 17 | 2026-08-24 06:59 | 639231508078650885 |
|
234 ms | 116.198.165.54 |
| 16 | 2026-08-24 06:42 | 639231498210697093 |
|
252 ms | 116.198.49.187 |
| 15 | 2026-08-24 06:26 | 639231488109699360 |
|
598 ms | 116.198.49.187 |
| 14 | 2026-08-24 05:33 | 639231456772510692 |
|
245 ms | 114.67.192.245 |
| 13 | 2026-08-24 05:17 | 639231447084631185 |
|
248 ms | 116.198.49.187 |
| 12 | 2026-08-24 05:00 | 639231437208519473 |
|
227 ms | 116.198.49.187 |
| 11 | 2026-08-24 04:44 | 639231427209627490 |
|
217 ms | 116.198.49.187 |
| 10 | 2026-08-24 03:51 | 639231395791246644 |
|
245 ms | 116.198.49.187 |
| 9 | 2026-08-24 03:35 | 639231386075551458 |
|
237 ms | 116.198.165.54 |
| 8 | 2026-08-24 03:19 | 639231376208713791 |
|
249 ms | 116.198.49.187 |
| 7 | 2026-08-24 03:02 | 639231366170589276 |
|
199 ms | 116.198.165.54 |
| 6 | 2026-08-24 02:10 | 639231334732159368 |
|
231 ms | 114.67.192.245 |
| 5 | 2026-08-24 01:53 | 639231325035670078 |
|
224 ms | 114.67.192.245 |
| 4 | 2026-08-24 01:37 | 639231315132253837 |
|
232 ms | 116.198.49.187 |
| 3 | 2026-08-24 01:21 | 639231305014280808 |
|
232 ms | 116.198.49.187 |
| 2 | 2026-08-24 00:28 | 639231273779380675 |
|
2246 ms | 116.198.49.187 |
| 1 | 2026-08-24 00:12 | 639231264180839154 |
|
203 ms | 116.198.49.187 |