DNS response history for b2.cyber-construction.com

b2.cyber-construction.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, 74 successful responses, 1 failed responses, and 209 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 b2.cyber-construction.com.
Records on Selected Date

75

Historical checks stored for this nameserver on selected date

Average Latency

209 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-23 23:54

All timestamps shown in UTC

Latest Resolved IP on Selected Date

172.81.118.21

Most recently resolved hosting IP on selected date

Successful Responses

74

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 b2.cyber-construction.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 23:54 639231254406598736
188 ms 172.81.118.21
74 2026-08-23 23:38 639231244697865594
187 ms 172.81.118.21
73 2026-08-23 23:21 639231234893504693
2095 ms 172.81.118.21
72 2026-08-23 23:05 639231225024549139
4 ms 172.81.118.21
71 2026-08-23 22:48 639231214931957622
7 ms 172.81.118.21
70 2026-08-23 22:31 639231204962010549
37 ms 172.81.118.21
69 2026-08-23 22:15 639231195170138463
3 ms 172.81.118.21
68 2026-08-23 21:59 639231185235020577
93 ms 172.81.118.21
67 2026-08-23 21:42 639231175558690075
91 ms 172.81.118.21
66 2026-08-23 21:26 639231165610444012
100 ms 172.81.118.21
65 2026-08-23 20:33 639231133806425363
112 ms 172.81.118.21
64 2026-08-23 20:17 639231124203758023
30 ms 172.81.118.21
63 2026-08-23 20:01 639231114428262706
193 ms 172.81.118.21
62 2026-08-23 19:44 639231104662480065
104 ms 172.81.118.21
61 2026-08-23 19:28 639231094840372018
184 ms 172.81.118.21
60 2026-08-23 19:12 639231085024583224
2008 ms 172.81.118.21
59 2026-08-23 18:55 639231075257417427
26 ms 172.81.118.21
58 2026-08-23 18:39 639231065516009503
104 ms 172.81.118.21
57 2026-08-23 18:23 639231055805348837
100 ms 172.81.118.21
56 2026-08-23 18:06 639231045980373765
8 ms 172.81.118.21
55 2026-08-23 17:50 639231035984577527
96 ms 172.81.118.21
54 2026-08-23 17:33 639231025928115303
179 ms 172.81.118.21
53 2026-08-23 16:40 639230994250157583
8 ms 172.81.118.21
52 2026-08-23 16:24 639230984476411369
-
51 2026-08-23 16:08 639230974838373450
8 ms 172.81.118.21
50 2026-08-23 15:52 639230965244277645
28 ms 172.81.118.21
49 2026-08-23 15:36 639230955522101820
104 ms 172.81.118.21
48 2026-08-23 15:19 639230945754521603
7 ms 172.81.118.21
47 2026-08-23 15:03 639230935852040504
31 ms 172.81.118.21
46 2026-08-23 14:47 639230926222061048
185 ms 172.81.118.21
45 2026-08-23 14:30 639230916449726907
187 ms 172.81.118.21
44 2026-08-23 14:14 639230906595053086
97 ms 172.81.118.21
43 2026-08-23 13:58 639230896680429441
101 ms 172.81.118.21
42 2026-08-23 13:41 639230886630210965
93 ms 172.81.118.21
41 2026-08-23 12:49 639230855430405719
104 ms 172.81.118.21
40 2026-08-23 12:33 639230845707499136
96 ms 172.81.118.21
39 2026-08-23 12:17 639230836186805419
2147 ms 172.81.118.21
38 2026-08-23 12:01 639230826493828316
94 ms 172.81.118.21
37 2026-08-23 11:44 639230816817882996
7 ms 172.81.118.21
36 2026-08-23 11:28 639230806933854189
10 ms 172.81.118.21
35 2026-08-23 11:12 639230797120243854
8 ms 172.81.118.21
34 2026-08-23 10:55 639230787310272840
93 ms 172.81.118.21
33 2026-08-23 10:39 639230777600173142
12 ms 172.81.118.21
32 2026-08-23 10:23 639230767665024593
4 ms 172.81.118.21
31 2026-08-23 10:06 639230757720962293
2101 ms 172.81.118.21
30 2026-08-23 09:49 639230747722189784
4 ms 172.81.118.21
29 2026-08-23 08:57 639230716313923480
13 ms 172.81.118.21
28 2026-08-23 08:41 639230706813835990
3 ms 172.81.118.21
27 2026-08-23 08:25 639230696871062203
2 ms 172.81.118.21
26 2026-08-23 08:08 639230687142781616
3 ms 172.81.118.21
25 2026-08-23 07:52 639230677432142227
94 ms 172.81.118.21
24 2026-08-23 07:36 639230667686258061
105 ms 172.81.118.21
23 2026-08-23 07:20 639230658039243685
4 ms 172.81.118.21
22 2026-08-23 07:04 639230648468473803
3 ms 172.81.118.21
21 2026-08-23 06:48 639230638829658294
191 ms 172.81.118.21
20 2026-08-23 06:32 639230629247017617
3 ms 172.81.118.21
19 2026-08-23 06:16 639230619625318239
97 ms 172.81.118.21
18 2026-08-23 05:59 639230609697630264
186 ms 172.81.118.21
17 2026-08-23 05:07 639230578570131864
4 ms 172.81.118.21
16 2026-08-23 04:51 639230568958963168
3 ms 172.81.118.21
15 2026-08-23 04:35 639230559287611211
35 ms 172.81.118.21
14 2026-08-23 04:19 639230549524312030
104 ms 172.81.118.21
13 2026-08-23 04:03 639230539739801669
94 ms 172.81.118.21
12 2026-08-23 03:47 639230530084069375
204 ms 172.81.118.21
11 2026-08-23 03:30 639230520362691441
3 ms 172.81.118.21
10 2026-08-23 03:14 639230510677194518
5 ms 172.81.118.21
9 2026-08-23 02:58 639230501156002646
4 ms 172.81.118.21
8 2026-08-23 02:42 639230491502198541
4 ms 172.81.118.21
7 2026-08-23 02:26 639230481860318494
4 ms 172.81.118.21
6 2026-08-23 02:10 639230471893008575
195 ms 172.81.118.21
5 2026-08-23 01:16 639230440030877421
92 ms 172.81.118.21
4 2026-08-23 01:01 639230430479725508
204 ms 172.81.118.21
3 2026-08-23 00:44 639230420875160219
95 ms 172.81.118.21
2 2026-08-23 00:28 639230411240692575
7 ms 172.81.118.21
1 2026-08-23 00:12 639230401550806607
2208 ms 172.81.118.21