History for ucns4.uchicago.edu
Domain: uchicago.edu • Tracking since 2026-08-04 23:25 UTC
DNS response history for ucns4.uchicago.edu
ucns4.uchicago.edu 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 61 DNS check records, 60 successful responses, 1 failed responses, and 226 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 ucns4.uchicago.edu.
Records on Selected Date
61
Historical checks stored for this nameserver on selected date
Average Latency
226 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-25 20:58
All timestamps shown in UTC
Latest Resolved IP on Selected Date
128.135.247.250
Most recently resolved hosting IP on selected date
Successful Responses
60
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 ucns4.uchicago.edu
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 |
|---|---|---|---|---|---|
| 61 | 2026-08-25 20:58 | 639232880143390843 |
|
147 ms | 128.135.247.250 |
| 60 | 2026-08-25 20:40 | 639232869755024069 |
|
112 ms | 128.135.247.250 |
| 59 | 2026-08-25 20:23 | 639232859355940346 |
|
116 ms | 128.135.247.250 |
| 58 | 2026-08-25 20:06 | 639232848992244953 |
|
27 ms | 128.135.247.250 |
| 57 | 2026-08-25 19:48 | 639232838596478500 |
|
2008 ms | 128.135.247.250 |
| 56 | 2026-08-25 19:31 | 639232828175327683 |
|
118 ms | 128.135.247.250 |
| 55 | 2026-08-25 19:14 | 639232817798330473 |
|
9 ms | 128.135.247.250 |
| 54 | 2026-08-25 18:20 | 639232785462407552 |
|
125 ms | 128.135.247.250 |
| 53 | 2026-08-25 18:03 | 639232775177487032 |
|
- | |
| 52 | 2026-08-25 17:46 | 639232764991087115 |
|
118 ms | 128.135.247.250 |
| 51 | 2026-08-25 17:29 | 639232754842971478 |
|
2125 ms | 128.135.247.250 |
| 50 | 2026-08-25 17:12 | 639232744455159107 |
|
16 ms | 128.135.247.250 |
| 49 | 2026-08-25 16:54 | 639232734145178231 |
|
36 ms | 128.135.247.250 |
| 48 | 2026-08-25 16:37 | 639232723827874402 |
|
9 ms | 128.135.247.250 |
| 47 | 2026-08-25 16:20 | 639232713533011892 |
|
144 ms | 128.135.247.250 |
| 46 | 2026-08-25 16:03 | 639232703065318207 |
|
52 ms | 128.135.247.250 |
| 45 | 2026-08-25 15:45 | 639232692629559470 |
|
34 ms | 128.135.247.250 |
| 44 | 2026-08-25 15:28 | 639232682238836475 |
|
144 ms | 128.135.247.250 |
| 43 | 2026-08-25 15:10 | 639232671787004306 |
|
29 ms | 128.135.247.250 |
| 42 | 2026-08-25 14:16 | 639232638994329666 |
|
115 ms | 128.135.247.250 |
| 41 | 2026-08-25 13:58 | 639232628614783237 |
|
121 ms | 128.135.247.250 |
| 40 | 2026-08-25 13:41 | 639232618360728578 |
|
123 ms | 128.135.247.250 |
| 39 | 2026-08-25 13:24 | 639232608016476376 |
|
123 ms | 128.135.247.250 |
| 38 | 2026-08-25 13:07 | 639232597643611557 |
|
117 ms | 128.135.247.250 |
| 37 | 2026-08-25 12:49 | 639232587225721862 |
|
11 ms | 128.135.247.250 |
| 36 | 2026-08-25 12:32 | 639232576780683689 |
|
17 ms | 128.135.247.250 |
| 35 | 2026-08-25 12:15 | 639232566381512620 |
|
179 ms | 128.135.247.250 |
| 34 | 2026-08-25 11:58 | 639232556111768563 |
|
2051 ms | 128.135.247.250 |
| 33 | 2026-08-25 11:40 | 639232545839529039 |
|
135 ms | 128.135.247.250 |
| 32 | 2026-08-25 11:23 | 639232535349285207 |
|
117 ms | 128.135.247.250 |
| 31 | 2026-08-25 11:06 | 639232524938080723 |
|
112 ms | 128.135.247.250 |
| 30 | 2026-08-25 10:12 | 639232492740373468 |
|
144 ms | 128.135.247.250 |
| 29 | 2026-08-25 09:55 | 639232482235303141 |
|
117 ms | 128.135.247.250 |
| 28 | 2026-08-25 09:37 | 639232471861770303 |
|
40 ms | 128.135.247.250 |
| 27 | 2026-08-25 09:20 | 639232461630217327 |
|
119 ms | 128.135.247.250 |
| 26 | 2026-08-25 09:03 | 639232451282965990 |
|
2053 ms | 128.135.247.250 |
| 25 | 2026-08-25 08:45 | 639232440814614938 |
|
37 ms | 128.135.247.250 |
| 24 | 2026-08-25 08:28 | 639232430410720425 |
|
122 ms | 128.135.247.250 |
| 23 | 2026-08-25 08:11 | 639232420003096185 |
|
28 ms | 128.135.247.250 |
| 22 | 2026-08-25 07:53 | 639232409467287444 |
|
10 ms | 128.135.247.250 |
| 21 | 2026-08-25 07:36 | 639232399077195997 |
|
118 ms | 128.135.247.250 |
| 20 | 2026-08-25 07:19 | 639232388731528337 |
|
31 ms | 128.135.247.250 |
| 19 | 2026-08-25 07:01 | 639232378288598612 |
|
110 ms | 128.135.247.250 |
| 18 | 2026-08-25 06:08 | 639232346196373643 |
|
127 ms | 128.135.247.250 |
| 17 | 2026-08-25 05:51 | 639232336112370741 |
|
117 ms | 128.135.247.250 |
| 16 | 2026-08-25 05:34 | 639232326146508970 |
|
132 ms | 128.135.247.250 |
| 15 | 2026-08-25 05:18 | 639232316189381720 |
|
141 ms | 128.135.247.250 |
| 14 | 2026-08-25 05:01 | 639232306217998913 |
|
132 ms | 128.135.247.250 |
| 13 | 2026-08-25 04:45 | 639232296255744174 |
|
9 ms | 128.135.247.250 |
| 12 | 2026-08-25 04:28 | 639232286095760789 |
|
26 ms | 128.135.247.250 |
| 11 | 2026-08-25 04:11 | 639232276086186273 |
|
274 ms | 128.135.247.250 |
| 10 | 2026-08-25 03:54 | 639232265900986425 |
|
116 ms | 128.135.247.250 |
| 9 | 2026-08-25 03:37 | 639232255723518075 |
|
48 ms | 128.135.247.250 |
| 8 | 2026-08-25 03:20 | 639232245484452890 |
|
114 ms | 128.135.247.250 |
| 7 | 2026-08-25 03:03 | 639232235157175331 |
|
149 ms | 128.135.247.250 |
| 6 | 2026-08-25 02:09 | 639232203197189095 |
|
172 ms | 128.135.247.250 |
| 5 | 2026-08-25 01:52 | 639232192844564298 |
|
16 ms | 128.135.247.250 |
| 4 | 2026-08-25 01:35 | 639232182496008942 |
|
127 ms | 128.135.247.250 |
| 3 | 2026-08-25 01:18 | 639232172197053132 |
|
113 ms | 128.135.247.250 |
| 2 | 2026-08-25 00:24 | 639232140250307418 |
|
118 ms | 128.135.247.250 |
| 1 | 2026-08-25 00:07 | 639232129927860324 |
|
117 ms | 128.135.247.250 |