DNS response history for ns21.ndsnet.jp

ns21.ndsnet.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 2026-08-24. For this date, NameServerHistory found 31 DNS check records, 31 successful responses, 0 failed responses, and 258 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 ns21.ndsnet.jp.
Records on Selected Date

31

Historical checks stored for this nameserver on selected date

Average Latency

258 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-24 13:16

All timestamps shown in UTC

Latest Resolved IP on Selected Date

153.139.248.227

Most recently resolved hosting IP on selected date

Successful Responses

31

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 ns21.ndsnet.jp

Showing DNS history for 2026-08-24 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
31 2026-08-24 13:16 639231735407682062
589 ms 153.139.248.227
30 2026-08-24 12:24 639231703815441688
521 ms 153.139.248.227
29 2026-08-24 12:07 639231693747052549
4 ms 153.139.248.227
28 2026-08-24 11:50 639231683712487276
516 ms 153.139.248.227
27 2026-08-24 11:33 639231673513573868
16 ms 153.139.248.227
26 2026-08-24 10:40 639231641791249939
522 ms 153.139.248.227
25 2026-08-24 10:24 639231631866211033
9 ms 153.139.248.227
24 2026-08-24 10:07 639231621644955316
15 ms 153.139.248.227
23 2026-08-24 09:50 639231611478799259
4 ms 153.139.248.227
22 2026-08-24 08:57 639231579923718211
287 ms 153.139.248.227
21 2026-08-24 08:41 639231569810702936
532 ms 153.139.248.227
20 2026-08-24 08:24 639231559762411619
4 ms 153.139.248.227
19 2026-08-24 08:07 639231549663595407
6 ms 153.139.248.227
18 2026-08-24 07:14 639231518076817246
515 ms 153.139.248.227
17 2026-08-24 06:58 639231508078650885
512 ms 153.139.248.227
16 2026-08-24 06:41 639231498210697093
512 ms 153.139.248.227
15 2026-08-24 06:24 639231488109699360
252 ms 153.139.248.227
14 2026-08-24 05:32 639231456772510692
10 ms 153.139.248.227
13 2026-08-24 05:16 639231447084631185
507 ms 153.139.248.227
12 2026-08-24 04:59 639231437208519473
518 ms 153.139.248.227
11 2026-08-24 04:43 639231427209627490
2 ms 153.139.248.227
10 2026-08-24 03:50 639231395791246644
2 ms 153.139.248.227
9 2026-08-24 03:34 639231386075551458
3 ms 153.139.248.227
8 2026-08-24 03:18 639231376208713791
260 ms 153.139.248.227
7 2026-08-24 03:01 639231366170589276
506 ms 153.139.248.227
6 2026-08-24 02:09 639231334732159368
275 ms 153.139.248.227
5 2026-08-24 01:52 639231325035670078
9 ms 153.139.248.227
4 2026-08-24 01:36 639231315132253837
10 ms 153.139.248.227
3 2026-08-24 01:19 639231305014280808
516 ms 153.139.248.227
2 2026-08-24 00:27 639231273779380675
545 ms 153.139.248.227
1 2026-08-24 00:11 639231264180839154
8 ms 153.139.248.227