History for ns21.cfirsthost.com
Domain: cfirsthost.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns21.cfirsthost.com
ns21.cfirsthost.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 2026-08-17. For this date, NameServerHistory found 72 DNS check records, 70 successful responses, 2 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.cfirsthost.com.
Records on Selected Date
72
Historical checks stored for this nameserver on selected date
Average Latency
326 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-17 23:54
All timestamps shown in UTC
Latest Resolved IP on Selected Date
170.249.233.193
Most recently resolved hosting IP on selected date
Successful Responses
70
Checks that returned a measurable response
Failed Responses
2
Checks with no response or no returned latency
Failure Rate
3%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for ns21.cfirsthost.com
Showing DNS history for 2026-08-17 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 |
|---|---|---|---|---|---|
| 72 | 2026-08-17 23:54 | 639226072268080268 |
|
111 ms | 170.249.233.193 |
| 71 | 2026-08-17 23:37 | 639226062577647657 |
|
233 ms | 170.249.233.193 |
| 70 | 2026-08-17 22:45 | 639226031060857136 |
|
115 ms | 170.249.233.193 |
| 69 | 2026-08-17 22:29 | 639226021535117364 |
|
2215 ms | 170.249.233.193 |
| 68 | 2026-08-17 22:13 | 639226011884237078 |
|
134 ms | 170.249.233.193 |
| 67 | 2026-08-17 21:57 | 639226002309299142 |
|
114 ms | 170.249.233.193 |
| 66 | 2026-08-17 21:41 | 639225992791784448 |
|
217 ms | 170.249.233.193 |
| 65 | 2026-08-17 21:25 | 639225983045271390 |
|
138 ms | 170.249.233.193 |
| 64 | 2026-08-17 21:08 | 639225973246293513 |
|
117 ms | 170.249.233.193 |
| 63 | 2026-08-17 20:52 | 639225963620186236 |
|
139 ms | 170.249.233.193 |
| 62 | 2026-08-17 20:36 | 639225953899183916 |
|
2141 ms | 170.249.233.193 |
| 61 | 2026-08-17 20:20 | 639225944391528206 |
|
2032 ms | 170.249.233.193 |
| 60 | 2026-08-17 20:04 | 639225934593254169 |
|
118 ms | 170.249.233.193 |
| 59 | 2026-08-17 19:47 | 639225924669984512 |
|
136 ms | 170.249.233.193 |
| 58 | 2026-08-17 18:55 | 639225893048561320 |
|
163 ms | 170.249.233.193 |
| 57 | 2026-08-17 18:39 | 639225883481298424 |
|
30 ms | 170.249.233.193 |
| 56 | 2026-08-17 18:23 | 639225873845394034 |
|
2119 ms | 170.249.233.193 |
| 55 | 2026-08-17 18:07 | 639225864216078662 |
|
38 ms | 170.249.233.193 |
| 54 | 2026-08-17 17:50 | 639225854541857773 |
|
129 ms | 170.249.233.193 |
| 53 | 2026-08-17 17:34 | 639225844733604072 |
|
125 ms | 170.249.233.193 |
| 52 | 2026-08-17 17:18 | 639225835085229232 |
|
212 ms | 170.249.233.193 |
| 51 | 2026-08-17 17:02 | 639225825349373981 |
|
138 ms | 170.249.233.193 |
| 50 | 2026-08-17 16:46 | 639225815690604161 |
|
200 ms | 170.249.233.193 |
| 49 | 2026-08-17 16:30 | 639225805952472306 |
|
129 ms | 170.249.233.193 |
| 48 | 2026-08-17 16:13 | 639225796264729638 |
|
227 ms | 170.249.233.193 |
| 47 | 2026-08-17 15:57 | 639225786326499329 |
|
240 ms | 170.249.233.193 |
| 46 | 2026-08-17 15:04 | 639225754798130711 |
|
2141 ms | 170.249.233.193 |
| 45 | 2026-08-17 14:48 | 639225745123193922 |
|
243 ms | 170.249.233.193 |
| 44 | 2026-08-17 14:32 | 639225735540597271 |
|
179 ms | 170.249.233.193 |
| 43 | 2026-08-17 14:16 | 639225725894857396 |
|
125 ms | 170.249.233.193 |
| 42 | 2026-08-17 14:00 | 639225716249606913 |
|
261 ms | 170.249.233.193 |
| 41 | 2026-08-17 13:44 | 639225706638238179 |
|
137 ms | 170.249.233.193 |
| 40 | 2026-08-17 13:28 | 639225696949691423 |
|
121 ms | 170.249.233.193 |
| 39 | 2026-08-17 13:12 | 639225687286186336 |
|
8 ms | 170.249.233.193 |
| 38 | 2026-08-17 12:56 | 639225677679573133 |
|
8 ms | 170.249.233.193 |
| 37 | 2026-08-17 12:39 | 639225667957861024 |
|
227 ms | 170.249.233.193 |
| 36 | 2026-08-17 12:23 | 639225658298791618 |
|
246 ms | 170.249.233.193 |
| 35 | 2026-08-17 12:07 | 639225648583652785 |
|
131 ms | 170.249.233.193 |
| 34 | 2026-08-17 11:14 | 639225617000524308 |
|
226 ms | 170.249.233.193 |
| 33 | 2026-08-17 10:59 | 639225607668541600 |
|
131 ms | 170.249.233.193 |
| 32 | 2026-08-17 10:43 | 639225598117279238 |
|
- | |
| 31 | 2026-08-17 10:27 | 639225588751002710 |
|
119 ms | 170.249.233.193 |
| 30 | 2026-08-17 10:12 | 639225579295831051 |
|
79 ms | 170.249.233.193 |
| 29 | 2026-08-17 09:56 | 639225569761469940 |
|
121 ms | 170.249.233.193 |
| 28 | 2026-08-17 09:40 | 639225560161422333 |
|
218 ms | 170.249.233.193 |
| 27 | 2026-08-17 09:24 | 639225550739955565 |
|
158 ms | 170.249.233.193 |
| 26 | 2026-08-17 09:08 | 639225541125222426 |
|
114 ms | 170.249.233.193 |
| 25 | 2026-08-17 08:52 | 639225531526675983 |
|
114 ms | 170.249.233.193 |
| 24 | 2026-08-17 08:36 | 639225521915528222 |
|
- | |
| 23 | 2026-08-17 08:20 | 639225512148151789 |
|
116 ms | 170.249.233.193 |
| 22 | 2026-08-17 07:27 | 639225480786142412 |
|
305 ms | 170.249.233.193 |
| 21 | 2026-08-17 07:12 | 639225471394348551 |
|
125 ms | 170.249.233.193 |
| 20 | 2026-08-17 06:56 | 639225462031685068 |
|
186 ms | 170.249.233.193 |
| 19 | 2026-08-17 06:40 | 639225452639458328 |
|
26 ms | 170.249.233.193 |
| 18 | 2026-08-17 06:25 | 639225443300966543 |
|
609 ms | 170.249.233.193 |
| 17 | 2026-08-17 06:09 | 639225433880499379 |
|
219 ms | 170.249.233.193 |
| 16 | 2026-08-17 05:53 | 639225424395198277 |
|
9 ms | 170.249.233.193 |
| 15 | 2026-08-17 05:38 | 639225414744137487 |
|
163 ms | 170.249.233.193 |
| 14 | 2026-08-17 05:21 | 639225405186783164 |
|
180 ms | 170.249.233.193 |
| 13 | 2026-08-17 05:05 | 639225395563669822 |
|
118 ms | 170.249.233.193 |
| 12 | 2026-08-17 04:49 | 639225386076645158 |
|
117 ms | 170.249.233.193 |
| 11 | 2026-08-17 04:34 | 639225376620669704 |
|
125 ms | 170.249.233.193 |
| 10 | 2026-08-17 03:42 | 639225345580892706 |
|
122 ms | 170.249.233.193 |
| 9 | 2026-08-17 03:26 | 639225336207383710 |
|
229 ms | 170.249.233.193 |
| 8 | 2026-08-17 03:11 | 639225326726565001 |
|
117 ms | 170.249.233.193 |
| 7 | 2026-08-17 02:55 | 639225317249271010 |
|
2113 ms | 170.249.233.193 |
| 6 | 2026-08-17 02:03 | 639225286280886044 |
|
122 ms | 170.249.233.193 |
| 5 | 2026-08-17 01:48 | 639225276872567548 |
|
126 ms | 170.249.233.193 |
| 4 | 2026-08-17 01:32 | 639225267353865348 |
|
247 ms | 170.249.233.193 |
| 3 | 2026-08-17 01:16 | 639225258033914248 |
|
249 ms | 170.249.233.193 |
| 2 | 2026-08-17 00:24 | 639225226652221583 |
|
230 ms | 170.249.233.193 |
| 1 | 2026-08-17 00:08 | 639225217156387684 |
|
137 ms | 170.249.233.193 |