DNS response history for ns1.concentric.com

ns1.concentric.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 2026-08-23. For this date, NameServerHistory found 75 DNS check records, 73 successful responses, 2 failed responses, and 223 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.concentric.com.
Records on Selected Date

75

Historical checks stored for this nameserver on selected date

Average Latency

223 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-23 23:53

All timestamps shown in UTC

Latest Resolved IP on Selected Date

156.154.64.25

Most recently resolved hosting IP on selected date

Successful Responses

73

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 ns1.concentric.com

Showing DNS history for 2026-08-23 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
75 2026-08-23 23:53 639231254406598736
131 ms 156.154.64.25
74 2026-08-23 23:36 639231244697865594
15 ms 156.154.64.25
73 2026-08-23 23:20 639231234893504693
8 ms 156.154.64.25
72 2026-08-23 23:03 639231225024549139
269 ms 156.154.64.25
71 2026-08-23 22:47 639231214931957622
256 ms 156.154.64.25
70 2026-08-23 22:30 639231204962010549
5 ms 156.154.64.25
69 2026-08-23 22:14 639231195170138463
3 ms 156.154.64.25
68 2026-08-23 21:57 639231185235020577
37 ms 156.154.64.25
67 2026-08-23 21:41 639231175558690075
2138 ms 156.154.64.25
66 2026-08-23 21:24 639231165610444012
254 ms 156.154.64.25
65 2026-08-23 20:32 639231133806425363
17 ms 156.154.64.25
64 2026-08-23 20:15 639231124203758023
241 ms 156.154.64.25
63 2026-08-23 19:59 639231114428262706
138 ms 156.154.64.25
62 2026-08-23 19:43 639231104662480065
251 ms 156.154.64.25
61 2026-08-23 19:27 639231094840372018
2 ms 156.154.64.25
60 2026-08-23 19:10 639231085024583224
130 ms 156.154.64.25
59 2026-08-23 18:54 639231075257417427
168 ms 156.154.64.25
58 2026-08-23 18:38 639231065516009503
4 ms 156.154.64.25
57 2026-08-23 18:21 639231055805348837
247 ms 156.154.64.25
56 2026-08-23 18:05 639231045980373765
14 ms 156.154.64.25
55 2026-08-23 17:49 639231035984577527
236 ms 156.154.64.25
54 2026-08-23 17:32 639231025928115303
7 ms 156.154.64.25
53 2026-08-23 16:39 639230994250157583
8 ms 156.154.64.25
52 2026-08-23 16:23 639230984476411369
11 ms 156.154.64.25
51 2026-08-23 16:06 639230974838373450
233 ms 156.154.64.25
50 2026-08-23 15:51 639230965244277645
4 ms 156.154.64.25
49 2026-08-23 15:34 639230955522101820
-
48 2026-08-23 15:18 639230945754521603
4 ms 156.154.64.25
47 2026-08-23 15:02 639230935852040504
121 ms 156.154.64.25
46 2026-08-23 14:45 639230926222061048
4 ms 156.154.64.25
45 2026-08-23 14:29 639230916449726907
2164 ms 156.154.64.25
44 2026-08-23 14:13 639230906595053086
58 ms 156.154.64.25
43 2026-08-23 13:56 639230896680429441
231 ms 156.154.64.25
42 2026-08-23 13:40 639230886630210965
251 ms 156.154.64.25
41 2026-08-23 12:48 639230855430405719
4 ms 156.154.64.25
40 2026-08-23 12:31 639230845707499136
238 ms 156.154.64.25
39 2026-08-23 12:15 639230836186805419
174 ms 156.154.64.25
38 2026-08-23 11:59 639230826493828316
271 ms 156.154.64.25
37 2026-08-23 11:43 639230816817882996
9 ms 156.154.64.25
36 2026-08-23 11:27 639230806933854189
249 ms 156.154.64.25
35 2026-08-23 11:10 639230797120243854
7 ms 156.154.64.25
34 2026-08-23 10:54 639230787310272840
3 ms 156.154.64.25
33 2026-08-23 10:38 639230777600173142
7 ms 156.154.64.25
32 2026-08-23 10:21 639230767665024593
4 ms 156.154.64.25
31 2026-08-23 10:05 639230757720962293
4 ms 156.154.64.25
30 2026-08-23 09:48 639230747722189784
239 ms 156.154.64.25
29 2026-08-23 08:56 639230716313923480
4 ms 156.154.64.25
28 2026-08-23 08:40 639230706813835990
2 ms 156.154.64.25
27 2026-08-23 08:24 639230696871062203
379 ms 156.154.64.25
26 2026-08-23 08:07 639230687142781616
16 ms 156.154.64.25
25 2026-08-23 07:51 639230677432142227
244 ms 156.154.64.25
24 2026-08-23 07:35 639230667686258061
20 ms 156.154.64.25
23 2026-08-23 07:19 639230658039243685
3 ms 156.154.64.25
22 2026-08-23 07:02 639230648468473803
12 ms 156.154.64.25
21 2026-08-23 06:46 639230638829658294
128 ms 156.154.64.25
20 2026-08-23 06:30 639230629247017617
234 ms 156.154.64.25
19 2026-08-23 06:14 639230619625318239
276 ms 156.154.64.25
18 2026-08-23 05:58 639230609697630264
164 ms 156.154.64.25
17 2026-08-23 05:06 639230578570131864
7 ms 156.154.64.25
16 2026-08-23 04:50 639230568958963168
144 ms 156.154.64.25
15 2026-08-23 04:34 639230559287611211
10 ms 156.154.64.25
14 2026-08-23 04:18 639230549524312030
2113 ms 156.154.64.25
13 2026-08-23 04:02 639230539739801669
-
12 2026-08-23 03:45 639230530084069375
166 ms 156.154.64.25
11 2026-08-23 03:29 639230520362691441
2129 ms 156.154.64.25
10 2026-08-23 03:13 639230510677194518
2 ms 156.154.64.25
9 2026-08-23 02:57 639230501156002646
2 ms 156.154.64.25
8 2026-08-23 02:41 639230491502198541
344 ms 156.154.64.25
7 2026-08-23 02:25 639230481860318494
34 ms 156.154.64.25
6 2026-08-23 02:08 639230471893008575
310 ms 156.154.64.25
5 2026-08-23 01:15 639230440030877421
203 ms 156.154.64.25
4 2026-08-23 00:59 639230430479725508
3 ms 156.154.64.25
3 2026-08-23 00:43 639230420875160219
231 ms 156.154.64.25
2 2026-08-23 00:27 639230411240692575
130 ms 156.154.64.25
1 2026-08-23 00:11 639230401550806607
118 ms 156.154.64.25