DNS response history for dc09-ns01.isfnet.co.jp

dc09-ns01.isfnet.co.jp 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 72 DNS check records, 72 successful responses, 0 failed responses, and 458 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 dc09-ns01.isfnet.co.jp.
Records on Selected Date

72

Historical checks stored for this nameserver on selected date

Average Latency

458 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-23 23:07

All timestamps shown in UTC

Latest Resolved IP on Selected Date

153.153.156.159

Most recently resolved hosting IP on selected date

Successful Responses

72

Checks that returned a measurable response

Failed Responses

0

Checks with no response or no returned latency

Failure Rate

0%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for dc09-ns01.isfnet.co.jp

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
72 2026-08-23 23:07 639231225024549139
2025 ms 153.153.156.159
71 2026-08-23 22:51 639231214931957622
4 ms 153.153.156.159
70 2026-08-23 22:34 639231204962010549
247 ms 153.153.156.159
69 2026-08-23 22:18 639231195170138463
3 ms 153.153.156.159
68 2026-08-23 22:01 639231185235020577
454 ms 153.153.156.159
67 2026-08-23 21:45 639231175558690075
144 ms 153.153.156.159
66 2026-08-23 21:28 639231165610444012
143 ms 153.153.156.159
65 2026-08-23 20:36 639231133806425363
133 ms 153.153.156.159
64 2026-08-23 20:19 639231124203758023
28 ms 153.153.156.159
63 2026-08-23 20:03 639231114428262706
88 ms 153.153.156.159
62 2026-08-23 19:47 639231104662480065
26 ms 153.153.156.159
61 2026-08-23 19:31 639231094840372018
299 ms 153.153.156.159
60 2026-08-23 19:14 639231085024583224
100 ms 153.153.156.159
59 2026-08-23 18:58 639231075257417427
4 ms 153.153.156.159
58 2026-08-23 18:42 639231065516009503
261 ms 153.153.156.159
57 2026-08-23 18:25 639231055805348837
991 ms 153.153.156.159
56 2026-08-23 18:09 639231045980373765
37 ms 153.153.156.159
55 2026-08-23 17:53 639231035984577527
828 ms 153.153.156.159
54 2026-08-23 17:36 639231025928115303
794 ms 153.153.156.159
53 2026-08-23 16:43 639230994250157583
2 ms 153.153.156.159
52 2026-08-23 16:27 639230984476411369
564 ms 153.153.156.159
51 2026-08-23 16:10 639230974838373450
4 ms 153.153.156.159
50 2026-08-23 15:54 639230965244277645
337 ms 153.153.156.159
49 2026-08-23 15:38 639230955522101820
709 ms 153.153.156.159
48 2026-08-23 15:22 639230945754521603
619 ms 153.153.156.159
47 2026-08-23 15:06 639230935852040504
4 ms 153.153.156.159
46 2026-08-23 14:49 639230926222061048
971 ms 153.153.156.159
45 2026-08-23 14:33 639230916449726907
4 ms 153.153.156.159
44 2026-08-23 14:17 639230906595053086
9 ms 153.153.156.159
43 2026-08-23 14:00 639230896680429441
104 ms 153.153.156.159
42 2026-08-23 13:44 639230886630210965
599 ms 153.153.156.159
41 2026-08-23 12:51 639230855430405719
456 ms 153.153.156.159
40 2026-08-23 12:35 639230845707499136
247 ms 153.153.156.159
39 2026-08-23 12:19 639230836186805419
841 ms 153.153.156.159
38 2026-08-23 12:03 639230826493828316
471 ms 153.153.156.159
37 2026-08-23 11:47 639230816817882996
3 ms 153.153.156.159
36 2026-08-23 11:31 639230806933854189
150 ms 153.153.156.159
35 2026-08-23 11:14 639230797120243854
171 ms 153.153.156.159
34 2026-08-23 10:58 639230787310272840
428 ms 153.153.156.159
33 2026-08-23 10:42 639230777600173142
711 ms 153.153.156.159
32 2026-08-23 10:25 639230767665024593
2025 ms 153.153.156.159
31 2026-08-23 10:09 639230757720962293
240 ms 153.153.156.159
30 2026-08-23 09:52 639230747722189784
313 ms 153.153.156.159
29 2026-08-23 09:00 639230716313923480
558 ms 153.153.156.159
28 2026-08-23 08:43 639230706813835990
654 ms 153.153.156.159
27 2026-08-23 08:28 639230696871062203
293 ms 153.153.156.159
26 2026-08-23 08:11 639230687142781616
797 ms 153.153.156.159
25 2026-08-23 07:55 639230677432142227
2664 ms 153.153.156.159
24 2026-08-23 07:39 639230667686258061
3 ms 153.153.156.159
23 2026-08-23 07:23 639230658039243685
7 ms 153.153.156.159
22 2026-08-23 07:06 639230648468473803
238 ms 153.153.156.159
21 2026-08-23 06:50 639230638829658294
175 ms 153.153.156.159
20 2026-08-23 06:34 639230629247017617
2307 ms 153.153.156.159
19 2026-08-23 06:18 639230619625318239
310 ms 153.153.156.159
18 2026-08-23 06:02 639230609697630264
246 ms 153.153.156.159
17 2026-08-23 05:10 639230578570131864
106 ms 153.153.156.159
16 2026-08-23 04:54 639230568958963168
9 ms 153.153.156.159
15 2026-08-23 04:38 639230559287611211
1612 ms 153.153.156.159
14 2026-08-23 04:22 639230549524312030
98 ms 153.153.156.159
13 2026-08-23 04:05 639230539739801669
892 ms 153.153.156.159
12 2026-08-23 03:49 639230530084069375
246 ms 153.153.156.159
11 2026-08-23 03:33 639230520362691441
3 ms 153.153.156.159
10 2026-08-23 03:17 639230510677194518
229 ms 153.153.156.159
9 2026-08-23 03:01 639230501156002646
4 ms 153.153.156.159
8 2026-08-23 02:45 639230491502198541
496 ms 153.153.156.159
7 2026-08-23 02:29 639230481860318494
2127 ms 153.153.156.159
6 2026-08-23 02:12 639230471893008575
257 ms 153.153.156.159
5 2026-08-23 01:19 639230440030877421
733 ms 153.153.156.159
4 2026-08-23 01:03 639230430479725508
715 ms 153.153.156.159
3 2026-08-23 00:47 639230420875160219
3 ms 153.153.156.159
2 2026-08-23 00:31 639230411240692575
568 ms 153.153.156.159
1 2026-08-23 00:15 639230401550806607
2 ms 153.153.156.159