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 2026-08-19. For this date, NameServerHistory found 74 DNS check records, 72 successful responses, 2 failed responses, and 207 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
74
Historical checks stored for this nameserver on selected date
Average Latency
207 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-19 23:46
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
72
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 2026-08-19 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 |
|---|---|---|---|---|---|
| 74 | 2026-08-19 23:46 | 639227795899225951 |
|
7 ms | 170.249.233.193 |
| 73 | 2026-08-19 23:30 | 639227786351762008 |
|
229 ms | 170.249.233.193 |
| 72 | 2026-08-19 23:14 | 639227776640591733 |
|
11 ms | 170.249.233.193 |
| 71 | 2026-08-19 22:58 | 639227767128841282 |
|
255 ms | 170.249.233.193 |
| 70 | 2026-08-19 22:42 | 639227757477304711 |
|
260 ms | 170.249.233.193 |
| 69 | 2026-08-19 22:26 | 639227747572098014 |
|
168 ms | 170.249.233.193 |
| 68 | 2026-08-19 22:09 | 639227737588613113 |
|
118 ms | 170.249.233.193 |
| 67 | 2026-08-19 21:17 | 639227706134603955 |
|
114 ms | 170.249.233.193 |
| 66 | 2026-08-19 21:01 | 639227696589027396 |
|
8 ms | 170.249.233.193 |
| 65 | 2026-08-19 20:45 | 639227687097707639 |
|
259 ms | 170.249.233.193 |
| 64 | 2026-08-19 20:29 | 639227677474464487 |
|
119 ms | 170.249.233.193 |
| 63 | 2026-08-19 20:13 | 639227667767441118 |
|
124 ms | 170.249.233.193 |
| 62 | 2026-08-19 19:56 | 639227657984833832 |
|
220 ms | 170.249.233.193 |
| 61 | 2026-08-19 19:40 | 639227648079992640 |
|
140 ms | 170.249.233.193 |
| 60 | 2026-08-19 19:23 | 639227638125048441 |
|
243 ms | 170.249.233.193 |
| 59 | 2026-08-19 19:07 | 639227628211392142 |
|
- | |
| 58 | 2026-08-19 18:50 | 639227618261696275 |
|
130 ms | 170.249.233.193 |
| 57 | 2026-08-19 18:33 | 639227608366233645 |
|
229 ms | 170.249.233.193 |
| 56 | 2026-08-19 18:17 | 639227598301787588 |
|
2114 ms | 170.249.233.193 |
| 55 | 2026-08-19 17:24 | 639227566241010716 |
|
114 ms | 170.249.233.193 |
| 54 | 2026-08-19 17:07 | 639227556454538959 |
|
245 ms | 170.249.233.193 |
| 53 | 2026-08-19 16:51 | 639227546640305542 |
|
6 ms | 170.249.233.193 |
| 52 | 2026-08-19 16:35 | 639227536965466472 |
|
240 ms | 170.249.233.193 |
| 51 | 2026-08-19 16:18 | 639227527048658280 |
|
247 ms | 170.249.233.193 |
| 50 | 2026-08-19 16:02 | 639227517386634438 |
|
111 ms | 170.249.233.193 |
| 49 | 2026-08-19 15:45 | 639227507459551637 |
|
38 ms | 170.249.233.193 |
| 48 | 2026-08-19 15:29 | 639227497515595277 |
|
231 ms | 170.249.233.193 |
| 47 | 2026-08-19 15:12 | 639227487441798036 |
|
141 ms | 170.249.233.193 |
| 46 | 2026-08-19 14:55 | 639227477445551863 |
|
218 ms | 170.249.233.193 |
| 45 | 2026-08-19 14:38 | 639227467297067891 |
|
212 ms | 170.249.233.193 |
| 44 | 2026-08-19 14:21 | 639227457057795635 |
|
5 ms | 170.249.233.193 |
| 43 | 2026-08-19 13:28 | 639227425244777397 |
|
133 ms | 170.249.233.193 |
| 42 | 2026-08-19 13:12 | 639227415422116485 |
|
245 ms | 170.249.233.193 |
| 41 | 2026-08-19 12:55 | 639227405307256053 |
|
238 ms | 170.249.233.193 |
| 40 | 2026-08-19 12:39 | 639227395396602630 |
|
215 ms | 170.249.233.193 |
| 39 | 2026-08-19 12:22 | 639227385510363611 |
|
222 ms | 170.249.233.193 |
| 38 | 2026-08-19 12:05 | 639227375508324850 |
|
113 ms | 170.249.233.193 |
| 37 | 2026-08-19 11:49 | 639227365326611906 |
|
226 ms | 170.249.233.193 |
| 36 | 2026-08-19 11:32 | 639227355360014208 |
|
215 ms | 170.249.233.193 |
| 35 | 2026-08-19 11:15 | 639227345036782165 |
|
111 ms | 170.249.233.193 |
| 34 | 2026-08-19 10:58 | 639227334992964533 |
|
132 ms | 170.249.233.193 |
| 33 | 2026-08-19 10:41 | 639227324986605572 |
|
223 ms | 170.249.233.193 |
| 32 | 2026-08-19 10:24 | 639227314928414539 |
|
218 ms | 170.249.233.193 |
| 31 | 2026-08-19 09:31 | 639227283029182134 |
|
122 ms | 170.249.233.193 |
| 30 | 2026-08-19 09:15 | 639227273294779350 |
|
222 ms | 170.249.233.193 |
| 29 | 2026-08-19 08:59 | 639227263525231313 |
|
258 ms | 170.249.233.193 |
| 28 | 2026-08-19 08:42 | 639227253578313363 |
|
250 ms | 170.249.233.193 |
| 27 | 2026-08-19 08:26 | 639227243649973322 |
|
124 ms | 170.249.233.193 |
| 26 | 2026-08-19 08:09 | 639227233581059317 |
|
114 ms | 170.249.233.193 |
| 25 | 2026-08-19 07:52 | 639227223667352067 |
|
130 ms | 170.249.233.193 |
| 24 | 2026-08-19 07:36 | 639227213714837066 |
|
- | |
| 23 | 2026-08-19 07:19 | 639227203701208496 |
|
120 ms | 170.249.233.193 |
| 22 | 2026-08-19 07:02 | 639227193643202179 |
|
69 ms | 170.249.233.193 |
| 21 | 2026-08-19 06:45 | 639227183584431597 |
|
45 ms | 170.249.233.193 |
| 20 | 2026-08-19 06:29 | 639227173347403088 |
|
156 ms | 170.249.233.193 |
| 19 | 2026-08-19 05:35 | 639227141523007601 |
|
132 ms | 170.249.233.193 |
| 18 | 2026-08-19 05:19 | 639227131785931574 |
|
230 ms | 170.249.233.193 |
| 17 | 2026-08-19 05:03 | 639227122176475389 |
|
244 ms | 170.249.233.193 |
| 16 | 2026-08-19 04:47 | 639227112668934596 |
|
7 ms | 170.249.233.193 |
| 15 | 2026-08-19 04:31 | 639227102773292788 |
|
2129 ms | 170.249.233.193 |
| 14 | 2026-08-19 04:15 | 639227093141136930 |
|
132 ms | 170.249.233.193 |
| 13 | 2026-08-19 03:59 | 639227083449420147 |
|
228 ms | 170.249.233.193 |
| 12 | 2026-08-19 03:43 | 639227073771748493 |
|
104 ms | 170.249.233.193 |
| 11 | 2026-08-19 03:26 | 639227063977347614 |
|
140 ms | 170.249.233.193 |
| 10 | 2026-08-19 03:10 | 639227054253519024 |
|
216 ms | 170.249.233.193 |
| 9 | 2026-08-19 02:53 | 639227044381963886 |
|
116 ms | 170.249.233.193 |
| 8 | 2026-08-19 02:37 | 639227034441085514 |
|
25 ms | 170.249.233.193 |
| 7 | 2026-08-19 01:45 | 639227003126489968 |
|
214 ms | 170.249.233.193 |
| 6 | 2026-08-19 01:29 | 639226993456311614 |
|
154 ms | 170.249.233.193 |
| 5 | 2026-08-19 01:13 | 639226983847312345 |
|
126 ms | 170.249.233.193 |
| 4 | 2026-08-19 00:57 | 639226974357874853 |
|
13 ms | 170.249.233.193 |
| 3 | 2026-08-19 00:41 | 639226964670484721 |
|
6 ms | 170.249.233.193 |
| 2 | 2026-08-19 00:24 | 639226954857899696 |
|
23 ms | 170.249.233.193 |
| 1 | 2026-08-19 00:08 | 639226945091603488 |
|
222 ms | 170.249.233.193 |