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 2026-08-26. For this date, NameServerHistory found 71 DNS check records, 71 successful responses, 0 failed responses, and 331 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

71

Historical checks stored for this nameserver on selected date

Average Latency

331 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-26 23:56

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

71

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 2026-08-26 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
71 2026-08-26 23:56 639233846871926285
120 ms 143.198.131.228
70 2026-08-26 23:02 639233814527872887
120 ms 143.198.131.228
69 2026-08-26 22:45 639233804315489381
120 ms 143.198.131.228
68 2026-08-26 22:28 639233793971346256
339 ms 143.198.131.228
67 2026-08-26 22:10 639233783644630463
116 ms 143.198.131.228
66 2026-08-26 21:53 639233773302621314
249 ms 143.198.131.228
65 2026-08-26 21:36 639233762896723748
124 ms 143.198.131.228
64 2026-08-26 21:18 639233752543876329
116 ms 143.198.131.228
63 2026-08-26 21:01 639233742155931788
225 ms 143.198.131.228
62 2026-08-26 20:44 639233731712555311
116 ms 143.198.131.228
61 2026-08-26 20:26 639233721164051126
123 ms 143.198.131.228
60 2026-08-26 20:09 639233710560486320
118 ms 143.198.131.228
59 2026-08-26 19:51 639233699834667450
412 ms 143.198.131.228
58 2026-08-26 18:56 639233667209186136
349 ms 143.198.131.228
57 2026-08-26 18:39 639233656814316266
229 ms 143.198.131.228
56 2026-08-26 18:22 639233646245051806
823 ms 143.198.131.228
55 2026-08-26 18:04 639233635663779051
341 ms 143.198.131.228
54 2026-08-26 17:46 639233624977342122
278 ms 143.198.131.228
53 2026-08-26 17:28 639233614446136153
267 ms 143.198.131.228
52 2026-08-26 17:11 639233603737877581
386 ms 143.198.131.228
51 2026-08-26 16:53 639233593269224651
205 ms 143.198.131.228
50 2026-08-26 16:36 639233582635086903
324 ms 143.198.131.228
49 2026-08-26 16:18 639233572000374575
341 ms 143.198.131.228
48 2026-08-26 16:00 639233561188633861
123 ms 143.198.131.228
47 2026-08-26 15:42 639233550544357027
235 ms 143.198.131.228
46 2026-08-26 14:48 639233517966053117
639 ms 143.198.131.228
45 2026-08-26 14:30 639233507603253585
119 ms 143.198.131.228
44 2026-08-26 14:13 639233497229039167
333 ms 143.198.131.228
43 2026-08-26 13:56 639233486864546406
381 ms 143.198.131.228
42 2026-08-26 13:38 639233476455174682
231 ms 143.198.131.228
41 2026-08-26 13:21 639233466171592605
119 ms 143.198.131.228
40 2026-08-26 13:04 639233455747096265
119 ms 143.198.131.228
39 2026-08-26 12:47 639233445367152284
110 ms 143.198.131.228
38 2026-08-26 12:29 639233434974187439
230 ms 143.198.131.228
37 2026-08-26 12:12 639233424567558554
233 ms 143.198.131.228
36 2026-08-26 11:55 639233414056832719
353 ms 143.198.131.228
35 2026-08-26 11:37 639233403515141099
2016 ms 143.198.131.228
34 2026-08-26 10:42 639233370841350248
236 ms 143.198.131.228
33 2026-08-26 10:25 639233360361507238
337 ms 143.198.131.228
32 2026-08-26 10:08 639233350067824371
232 ms 143.198.131.228
31 2026-08-26 09:51 639233339545274518
228 ms 143.198.131.228
30 2026-08-26 09:33 639233329214918079
134 ms 143.198.131.228
29 2026-08-26 09:16 639233318749762337
2499 ms 143.198.131.228
28 2026-08-26 08:58 639233308387917838
244 ms 143.198.131.228
27 2026-08-26 08:41 639233297961740122
2462 ms 143.198.131.228
26 2026-08-26 08:24 639233287487159094
343 ms 143.198.131.228
25 2026-08-26 08:06 639233276995531707
271 ms 143.198.131.228
24 2026-08-26 07:49 639233266521568229
341 ms 143.198.131.228
23 2026-08-26 07:31 639233256081047431
338 ms 143.198.131.228
22 2026-08-26 06:37 639233223620132921
340 ms 143.198.131.228
21 2026-08-26 06:20 639233213287814244
115 ms 143.198.131.228
20 2026-08-26 06:03 639233202925983161
339 ms 143.198.131.228
19 2026-08-26 05:45 639233192644780696
338 ms 143.198.131.228
18 2026-08-26 05:28 639233182401183833
228 ms 143.198.131.228
17 2026-08-26 05:11 639233172074181051
115 ms 143.198.131.228
16 2026-08-26 04:54 639233161808421455
339 ms 143.198.131.228
15 2026-08-26 04:37 639233151357344052
13 ms 143.198.131.228
14 2026-08-26 04:19 639233141034116946
551 ms 143.198.131.228
13 2026-08-26 04:02 639233130828334142
123 ms 143.198.131.228
12 2026-08-26 03:45 639233120373450007
336 ms 143.198.131.228
11 2026-08-26 03:28 639233110066216193
115 ms 143.198.131.228
10 2026-08-26 02:34 639233078065410564
227 ms 143.198.131.228
9 2026-08-26 02:17 639233067787457832
228 ms 143.198.131.228
8 2026-08-26 02:00 639233057501801162
108 ms 143.198.131.228
7 2026-08-26 01:43 639233047089431703
123 ms 143.198.131.228
6 2026-08-26 01:26 639233036754790688
117 ms 143.198.131.228
5 2026-08-26 01:08 639233026412602472
229 ms 143.198.131.228
4 2026-08-26 00:51 639233016064066127
7 ms 143.198.131.228
3 2026-08-26 00:34 639233005922655772
231 ms 143.198.131.228
2 2026-08-26 00:17 639232995672256907
9 ms 143.198.131.228
1 2026-08-26 00:00 639232985300872416
518 ms 143.198.131.228