DNS response history for ns1.questdiagnostics.com

ns1.questdiagnostics.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 2026-08-21. For this date, NameServerHistory found 73 DNS check records, 72 successful responses, 1 failed responses, and 278 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 ns1.questdiagnostics.com.
Records on Selected Date

73

Historical checks stored for this nameserver on selected date

Average Latency

278 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-21 23:54

All timestamps shown in UTC

Latest Resolved IP on Selected Date

216.203.80.72

Most recently resolved hosting IP on selected date

Successful Responses

72

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

1%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns1.questdiagnostics.com

Showing DNS history for 2026-08-21 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
73 2026-08-21 23:54 639229527598660841
102 ms 216.203.80.72
72 2026-08-21 23:38 639229517954323214
150 ms 216.203.80.72
71 2026-08-21 23:22 639229508269999021
114 ms 216.203.80.72
70 2026-08-21 23:05 639229498559060171
204 ms 216.203.80.72
69 2026-08-21 22:49 639229488519347586
100 ms 216.203.80.72
68 2026-08-21 21:56 639229456606578934
242 ms 216.203.80.72
67 2026-08-21 21:39 639229446985772499
149 ms 216.203.80.72
66 2026-08-21 21:23 639229437367313098
135 ms 216.203.80.72
65 2026-08-21 21:07 639229427923950391
134 ms 216.203.80.72
64 2026-08-21 20:51 639229418168588854
110 ms 216.203.80.72
63 2026-08-21 20:35 639229408345678334
113 ms 216.203.80.72
62 2026-08-21 20:19 639229398616354648
107 ms 216.203.80.72
61 2026-08-21 20:02 639229388634592323
234 ms 216.203.80.72
60 2026-08-21 19:46 639229378792837692
147 ms 216.203.80.72
59 2026-08-21 19:30 639229369154682311
156 ms 216.203.80.72
58 2026-08-21 19:13 639229359248017926
102 ms 216.203.80.72
57 2026-08-21 18:56 639229349124294642
233 ms 216.203.80.72
56 2026-08-21 18:04 639229317791715692
24 ms 216.203.80.72
55 2026-08-21 17:48 639229308115194575
105 ms 216.203.80.72
54 2026-08-21 17:32 639229298320320558
197 ms 216.203.80.72
53 2026-08-21 17:16 639229288674863221
159 ms 216.203.80.72
52 2026-08-21 16:59 639229278983677079
107 ms 216.203.80.72
51 2026-08-21 16:43 639229269405517175
2020 ms 216.203.80.72
50 2026-08-21 16:27 639229259594798244
2104 ms 216.203.80.72
49 2026-08-21 16:11 639229249736681188
2109 ms 216.203.80.72
48 2026-08-21 15:54 639229239699417787
112 ms 216.203.80.72
47 2026-08-21 15:37 639229229621964033
206 ms 216.203.80.72
46 2026-08-21 15:20 639229219567270965
114 ms 216.203.80.72
45 2026-08-21 15:04 639229209406666856
137 ms 216.203.80.72
44 2026-08-21 14:11 639229177815876178
117 ms 216.203.80.72
43 2026-08-21 13:55 639229168243572685
149 ms 216.203.80.72
42 2026-08-21 13:39 639229158599856475
110 ms 216.203.80.72
41 2026-08-21 13:23 639229148998940902
106 ms 216.203.80.72
40 2026-08-21 13:07 639229139276923594
135 ms 216.203.80.72
39 2026-08-21 12:50 639229129709912394
189 ms 216.203.80.72
38 2026-08-21 12:34 639229119801488500
2134 ms 216.203.80.72
37 2026-08-21 12:18 639229110135262458
117 ms 216.203.80.72
36 2026-08-21 12:02 639229100336051392
128 ms 216.203.80.72
35 2026-08-21 11:45 639229090641415626
118 ms 216.203.80.72
34 2026-08-21 11:29 639229080702683947
112 ms 216.203.80.72
33 2026-08-21 11:12 639229070601456699
209 ms 216.203.80.72
32 2026-08-21 10:19 639229038947447232
107 ms 216.203.80.72
31 2026-08-21 10:03 639229029268708773
111 ms 216.203.80.72
30 2026-08-21 09:47 639229019647910603
132 ms 216.203.80.72
29 2026-08-21 09:31 639229009983843738
105 ms 216.203.80.72
28 2026-08-21 09:15 639229000203331882
96 ms 216.203.80.72
27 2026-08-21 08:58 639228990302335999
-
26 2026-08-21 08:42 639228980567740722
214 ms 216.203.80.72
25 2026-08-21 08:26 639228970762445174
100 ms 216.203.80.72
24 2026-08-21 08:10 639228961065054445
102 ms 216.203.80.72
23 2026-08-21 07:53 639228951224649885
202 ms 216.203.80.72
22 2026-08-21 07:36 639228941303864592
133 ms 216.203.80.72
21 2026-08-21 07:20 639228931191328583
148 ms 216.203.80.72
20 2026-08-21 06:27 639228899518173317
244 ms 216.203.80.72
19 2026-08-21 06:11 639228889785027669
221 ms 216.203.80.72
18 2026-08-21 05:55 639228880106330161
103 ms 216.203.80.72
17 2026-08-21 05:38 639228870316184091
115 ms 216.203.80.72
16 2026-08-21 05:22 639228860695366512
164 ms 216.203.80.72
15 2026-08-21 05:06 639228851027209500
173 ms 216.203.80.72
14 2026-08-21 04:50 639228841479265462
103 ms 216.203.80.72
13 2026-08-21 04:34 639228831752962260
145 ms 216.203.80.72
12 2026-08-21 04:18 639228821953295483
251 ms 216.203.80.72
11 2026-08-21 04:02 639228812227429953
106 ms 216.203.80.72
10 2026-08-21 03:45 639228802476107538
224 ms 216.203.80.72
9 2026-08-21 03:29 639228792525492032
120 ms 216.203.80.72
8 2026-08-21 02:36 639228761131421385
2100 ms 216.203.80.72
7 2026-08-21 02:20 639228751571206692
95 ms 216.203.80.72
6 2026-08-21 02:04 639228741705571019
110 ms 216.203.80.72
5 2026-08-21 01:47 639228731642208228
154 ms 216.203.80.72
4 2026-08-21 00:55 639228700387002072
110 ms 216.203.80.72
3 2026-08-21 00:39 639228690742014433
135 ms 216.203.80.72
2 2026-08-21 00:22 639228680877937122
222 ms 216.203.80.72
1 2026-08-21 00:06 639228670775860800
108 ms 216.203.80.72