DNS response history for b.root-servers.nv.com

b.root-servers.nv.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 2026-08-09. For this date, NameServerHistory found 78 DNS check records, 78 successful responses, 0 failed responses, and 412 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 b.root-servers.nv.com.
Records on Selected Date

78

Historical checks stored for this nameserver on selected date

Average Latency

412 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-09 23:18

All timestamps shown in UTC

Latest Resolved IP on Selected Date

143.198.131.228

Most recently resolved hosting IP on selected date

Successful Responses

78

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 b.root-servers.nv.com

Showing DNS history for 2026-08-09 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
78 2026-08-09 23:18 639219137912168440
2182 ms 143.198.131.228
77 2026-08-09 23:03 639219129014206359
108 ms 143.198.131.228
76 2026-08-09 22:48 639219120129816185
489 ms 143.198.131.228
75 2026-08-09 22:33 639219111180200055
345 ms 143.198.131.228
74 2026-08-09 22:18 639219102397272208
236 ms 143.198.131.228
73 2026-08-09 22:04 639219093318422880
146 ms 143.198.131.228
72 2026-08-09 21:48 639219084400315753
3 ms 143.198.131.228
71 2026-08-09 21:34 639219075254551587
334 ms 143.198.131.228
70 2026-08-09 21:18 639219065729192158
153 ms 143.198.131.228
69 2026-08-09 21:02 639219056747802098
109 ms 143.198.131.228
68 2026-08-09 20:47 639219047713450952
242 ms 143.198.131.228
67 2026-08-09 20:32 639219038561445315
368 ms 143.198.131.228
66 2026-08-09 19:41 639219007390383771
149 ms 143.198.131.228
65 2026-08-09 19:26 639218998523265596
550 ms 143.198.131.228
64 2026-08-09 19:11 639218989631630804
115 ms 143.198.131.228
63 2026-08-09 18:56 639218980808450892
224 ms 143.198.131.228
62 2026-08-09 18:41 639218971852160604
334 ms 143.198.131.228
61 2026-08-09 18:26 639218962783650906
231 ms 143.198.131.228
60 2026-08-09 18:11 639218953792820819
350 ms 143.198.131.228
59 2026-08-09 17:57 639218944959692876
125 ms 143.198.131.228
58 2026-08-09 17:42 639218936169104506
132 ms 143.198.131.228
57 2026-08-09 17:27 639218927166062556
115 ms 143.198.131.228
56 2026-08-09 17:12 639218918015715420
251 ms 143.198.131.228
55 2026-08-09 16:56 639218908881852638
514 ms 143.198.131.228
54 2026-08-09 16:05 639218877956262035
2614 ms 143.198.131.228
53 2026-08-09 15:50 639218869143729797
123 ms 143.198.131.228
52 2026-08-09 15:35 639218860485298832
182 ms 143.198.131.228
51 2026-08-09 15:21 639218851607906747
121 ms 143.198.131.228
50 2026-08-09 15:06 639218842720839568
221 ms 143.198.131.228
49 2026-08-09 14:51 639218833878788864
118 ms 143.198.131.228
48 2026-08-09 14:36 639218825180862573
102 ms 143.198.131.228
47 2026-08-09 14:22 639218816469621951
247 ms 143.198.131.228
46 2026-08-09 14:07 639218807685036212
96 ms 143.198.131.228
45 2026-08-09 13:53 639218798978271509
238 ms 143.198.131.228
44 2026-08-09 13:38 639218790065423597
112 ms 143.198.131.228
43 2026-08-09 13:23 639218781304584862
346 ms 143.198.131.228
42 2026-08-09 12:33 639218750311179000
97 ms 143.198.131.228
41 2026-08-09 12:18 639218741750420268
483 ms 143.198.131.228
40 2026-08-09 12:04 639218733057535576
224 ms 143.198.131.228
39 2026-08-09 11:50 639218724471329044
234 ms 143.198.131.228
38 2026-08-09 11:35 639218715911974203
349 ms 143.198.131.228
37 2026-08-09 11:21 639218707310812834
123 ms 143.198.131.228
36 2026-08-09 11:06 639218698790485612
340 ms 143.198.131.228
35 2026-08-09 10:52 639218690367692706
48 ms 143.198.131.228
34 2026-08-09 10:38 639218681923173883
121 ms 143.198.131.228
33 2026-08-09 10:24 639218673547179738
231 ms 143.198.131.228
32 2026-08-09 10:10 639218664890274867
127 ms 143.198.131.228
31 2026-08-09 09:55 639218656036928157
93 ms 143.198.131.228
30 2026-08-09 09:04 639218624808018222
237 ms 143.198.131.228
29 2026-08-09 08:49 639218616243340806
223 ms 143.198.131.228
28 2026-08-09 08:35 639218607397811973
2944 ms 143.198.131.228
27 2026-08-09 08:20 639218598812444454
230 ms 143.198.131.228
26 2026-08-09 08:05 639218590219570048
4 ms 143.198.131.228
25 2026-08-09 07:51 639218581690210758
6 ms 143.198.131.228
24 2026-08-09 07:37 639218573057388822
2 ms 143.198.131.228
23 2026-08-09 07:23 639218564408781785
121 ms 143.198.131.228
22 2026-08-09 07:08 639218555767188482
21 ms 143.198.131.228
21 2026-08-09 06:54 639218547142705295
265 ms 143.198.131.228
20 2026-08-09 06:39 639218538090114532
233 ms 143.198.131.228
19 2026-08-09 06:24 639218529257910584
326 ms 143.198.131.228
18 2026-08-09 05:30 639218498473231858
444 ms 143.198.131.228
17 2026-08-09 05:16 639218489802113995
116 ms 143.198.131.228
16 2026-08-09 05:01 639218481006804516
2506 ms 143.198.131.228
15 2026-08-09 04:46 639218472048712427
122 ms 143.198.131.228
14 2026-08-09 04:32 639218463224432974
2462 ms 143.198.131.228
13 2026-08-09 04:17 639218454384107526
227 ms 143.198.131.228
12 2026-08-09 04:02 639218445331231791
120 ms 143.198.131.228
11 2026-08-09 03:47 639218436285215733
344 ms 143.198.131.228
10 2026-08-09 03:32 639218427289555123
2093 ms 143.198.131.228
9 2026-08-09 03:17 639218418227819981
130 ms 143.198.131.228
8 2026-08-09 03:02 639218409119503123
123 ms 143.198.131.228
7 2026-08-09 02:46 639218399771712154
241 ms 143.198.131.228
6 2026-08-09 01:54 639218368648652303
131 ms 143.198.131.228
5 2026-08-09 01:39 639218359569598460
243 ms 143.198.131.228
4 2026-08-09 01:23 639218350555429902
444 ms 143.198.131.228
3 2026-08-09 01:08 639218341311543299
2106 ms 143.198.131.228
2 2026-08-09 00:16 639218309981981465
124 ms 143.198.131.228
1 2026-08-09 00:01 639218300987184335
725 ms 143.198.131.228