History for ns4.co.contra-costa.ca.us
Domain: contra-costa.ca.us • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns4.co.contra-costa.ca.us
ns4.co.contra-costa.ca.us 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 66 DNS check records, 65 successful responses, 1 failed responses, and 316 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 ns4.co.contra-costa.ca.us.
Records on Selected Date
66
Historical checks stored for this nameserver on selected date
Average Latency
316 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-25 22:32
All timestamps shown in UTC
Latest Resolved IP on Selected Date
64.166.144.4
Most recently resolved hosting IP on selected date
Successful Responses
65
Checks that returned a measurable response
Failed Responses
1
Checks with no response or no returned latency
Failure Rate
2%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for ns4.co.contra-costa.ca.us
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 |
|---|---|---|---|---|---|
| 66 | 2026-08-25 22:32 | 639232932163142799 |
|
202 ms | 64.166.144.4 |
| 65 | 2026-08-25 22:14 | 639232921673215474 |
|
217 ms | 64.166.144.4 |
| 64 | 2026-08-25 21:57 | 639232911234504639 |
|
174 ms | 64.166.144.4 |
| 63 | 2026-08-25 21:39 | 639232900747078453 |
|
166 ms | 64.166.144.4 |
| 62 | 2026-08-25 21:22 | 639232890389222534 |
|
2166 ms | 64.166.144.4 |
| 61 | 2026-08-25 21:05 | 639232880143390843 |
|
201 ms | 64.166.144.4 |
| 60 | 2026-08-25 20:48 | 639232869755024069 |
|
161 ms | 64.166.144.4 |
| 59 | 2026-08-25 20:30 | 639232859355940346 |
|
201 ms | 64.166.144.4 |
| 58 | 2026-08-25 20:13 | 639232848992244953 |
|
203 ms | 64.166.144.4 |
| 57 | 2026-08-25 19:56 | 639232838596478500 |
|
207 ms | 64.166.144.4 |
| 56 | 2026-08-25 19:38 | 639232828175327683 |
|
215 ms | 64.166.144.4 |
| 55 | 2026-08-25 19:21 | 639232817798330473 |
|
303 ms | 64.166.144.4 |
| 54 | 2026-08-25 18:27 | 639232785462407552 |
|
215 ms | 64.166.144.4 |
| 53 | 2026-08-25 18:10 | 639232775177487032 |
|
2163 ms | 64.166.144.4 |
| 52 | 2026-08-25 17:53 | 639232764991087115 |
|
204 ms | 64.166.144.4 |
| 51 | 2026-08-25 17:36 | 639232754842971478 |
|
191 ms | 64.166.144.4 |
| 50 | 2026-08-25 17:19 | 639232744455159107 |
|
184 ms | 64.166.144.4 |
| 49 | 2026-08-25 17:02 | 639232734145178231 |
|
222 ms | 64.166.144.4 |
| 48 | 2026-08-25 16:44 | 639232723827874402 |
|
199 ms | 64.166.144.4 |
| 47 | 2026-08-25 16:27 | 639232713533011892 |
|
177 ms | 64.166.144.4 |
| 46 | 2026-08-25 16:10 | 639232703065318207 |
|
168 ms | 64.166.144.4 |
| 45 | 2026-08-25 15:53 | 639232692629559470 |
|
203 ms | 64.166.144.4 |
| 44 | 2026-08-25 15:35 | 639232682238836475 |
|
185 ms | 64.166.144.4 |
| 43 | 2026-08-25 15:18 | 639232671787004306 |
|
181 ms | 64.166.144.4 |
| 42 | 2026-08-25 14:23 | 639232638994329666 |
|
202 ms | 64.166.144.4 |
| 41 | 2026-08-25 14:06 | 639232628614783237 |
|
166 ms | 64.166.144.4 |
| 40 | 2026-08-25 13:49 | 639232618360728578 |
|
197 ms | 64.166.144.4 |
| 39 | 2026-08-25 13:31 | 639232608016476376 |
|
177 ms | 64.166.144.4 |
| 38 | 2026-08-25 13:14 | 639232597643611557 |
|
194 ms | 64.166.144.4 |
| 37 | 2026-08-25 12:57 | 639232587225721862 |
|
170 ms | 64.166.144.4 |
| 36 | 2026-08-25 12:39 | 639232576780683689 |
|
213 ms | 64.166.144.4 |
| 35 | 2026-08-25 12:22 | 639232566381512620 |
|
168 ms | 64.166.144.4 |
| 34 | 2026-08-25 12:05 | 639232556111768563 |
|
205 ms | 64.166.144.4 |
| 33 | 2026-08-25 11:48 | 639232545839529039 |
|
169 ms | 64.166.144.4 |
| 32 | 2026-08-25 11:30 | 639232535349285207 |
|
200 ms | 64.166.144.4 |
| 31 | 2026-08-25 11:13 | 639232524938080723 |
|
178 ms | 64.166.144.4 |
| 30 | 2026-08-25 10:19 | 639232492740373468 |
|
197 ms | 64.166.144.4 |
| 29 | 2026-08-25 10:02 | 639232482235303141 |
|
194 ms | 64.166.144.4 |
| 28 | 2026-08-25 09:44 | 639232471861770303 |
|
187 ms | 64.166.144.4 |
| 27 | 2026-08-25 09:27 | 639232461630217327 |
|
175 ms | 64.166.144.4 |
| 26 | 2026-08-25 09:10 | 639232451282965990 |
|
206 ms | 64.166.144.4 |
| 25 | 2026-08-25 08:53 | 639232440814614938 |
|
- | |
| 24 | 2026-08-25 08:35 | 639232430410720425 |
|
179 ms | 64.166.144.4 |
| 23 | 2026-08-25 08:18 | 639232420003096185 |
|
211 ms | 64.166.144.4 |
| 22 | 2026-08-25 08:01 | 639232409467287444 |
|
175 ms | 64.166.144.4 |
| 21 | 2026-08-25 07:43 | 639232399077195997 |
|
198 ms | 64.166.144.4 |
| 20 | 2026-08-25 07:26 | 639232388731528337 |
|
195 ms | 64.166.144.4 |
| 19 | 2026-08-25 07:08 | 639232378288598612 |
|
198 ms | 64.166.144.4 |
| 18 | 2026-08-25 06:15 | 639232346196373643 |
|
208 ms | 64.166.144.4 |
| 17 | 2026-08-25 05:58 | 639232336112370741 |
|
162 ms | 64.166.144.4 |
| 16 | 2026-08-25 05:41 | 639232326146508970 |
|
181 ms | 64.166.144.4 |
| 15 | 2026-08-25 05:25 | 639232316189381720 |
|
173 ms | 64.166.144.4 |
| 14 | 2026-08-25 05:08 | 639232306217998913 |
|
195 ms | 64.166.144.4 |
| 13 | 2026-08-25 04:52 | 639232296255744174 |
|
186 ms | 64.166.144.4 |
| 12 | 2026-08-25 04:35 | 639232286095760789 |
|
294 ms | 64.166.144.4 |
| 11 | 2026-08-25 04:18 | 639232276086186273 |
|
191 ms | 64.166.144.4 |
| 10 | 2026-08-25 04:01 | 639232265900986425 |
|
193 ms | 64.166.144.4 |
| 9 | 2026-08-25 03:44 | 639232255723518075 |
|
183 ms | 64.166.144.4 |
| 8 | 2026-08-25 03:27 | 639232245484452890 |
|
198 ms | 64.166.144.4 |
| 7 | 2026-08-25 03:10 | 639232235157175331 |
|
198 ms | 64.166.144.4 |
| 6 | 2026-08-25 02:17 | 639232203197189095 |
|
2175 ms | 64.166.144.4 |
| 5 | 2026-08-25 02:00 | 639232192844564298 |
|
177 ms | 64.166.144.4 |
| 4 | 2026-08-25 01:42 | 639232182496008942 |
|
201 ms | 64.166.144.4 |
| 3 | 2026-08-25 01:25 | 639232172197053132 |
|
203 ms | 64.166.144.4 |
| 2 | 2026-08-25 00:32 | 639232140250307418 |
|
196 ms | 64.166.144.4 |
| 1 | 2026-08-25 00:15 | 639232129927860324 |
|
2171 ms | 64.166.144.4 |