History for b.root-servers.net
Domain: root-servers.net • Tracking since 2026-08-04 23:25 UTC
DNS response history for b.root-servers.net
b.root-servers.net 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, 75 successful responses, 0 failed responses, and 15 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.net.
Records on Selected Date
75
Historical checks stored for this nameserver on selected date
Average Latency
15 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-23 23:44
All timestamps shown in UTC
Latest Resolved IP on Selected Date
170.247.170.2
Most recently resolved hosting IP on selected date
Successful Responses
75
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.net
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 23:44 | 639231254406598736 |
|
5 ms | 170.247.170.2 |
| 74 | 2026-08-23 23:27 | 639231244697865594 |
|
5 ms | 170.247.170.2 |
| 73 | 2026-08-23 23:11 | 639231234893504693 |
|
5 ms | 170.247.170.2 |
| 72 | 2026-08-23 22:55 | 639231225024549139 |
|
3 ms | 170.247.170.2 |
| 71 | 2026-08-23 22:38 | 639231214931957622 |
|
16 ms | 170.247.170.2 |
| 70 | 2026-08-23 22:21 | 639231204962010549 |
|
34 ms | 170.247.170.2 |
| 69 | 2026-08-23 22:05 | 639231195170138463 |
|
4 ms | 170.247.170.2 |
| 68 | 2026-08-23 21:48 | 639231185235020577 |
|
4 ms | 170.247.170.2 |
| 67 | 2026-08-23 21:32 | 639231175558690075 |
|
7 ms | 170.247.170.2 |
| 66 | 2026-08-23 21:16 | 639231165610444012 |
|
85 ms | 170.247.170.2 |
| 65 | 2026-08-23 20:23 | 639231133806425363 |
|
5 ms | 170.247.170.2 |
| 64 | 2026-08-23 20:07 | 639231124203758023 |
|
4 ms | 170.247.170.2 |
| 63 | 2026-08-23 19:50 | 639231114428262706 |
|
4 ms | 170.247.170.2 |
| 62 | 2026-08-23 19:34 | 639231104662480065 |
|
6 ms | 170.247.170.2 |
| 61 | 2026-08-23 19:18 | 639231094840372018 |
|
13 ms | 170.247.170.2 |
| 60 | 2026-08-23 19:01 | 639231085024583224 |
|
4 ms | 170.247.170.2 |
| 59 | 2026-08-23 18:45 | 639231075257417427 |
|
7 ms | 170.247.170.2 |
| 58 | 2026-08-23 18:29 | 639231065516009503 |
|
6 ms | 170.247.170.2 |
| 57 | 2026-08-23 18:13 | 639231055805348837 |
|
4 ms | 170.247.170.2 |
| 56 | 2026-08-23 17:56 | 639231045980373765 |
|
5 ms | 170.247.170.2 |
| 55 | 2026-08-23 17:39 | 639231035984577527 |
|
21 ms | 170.247.170.2 |
| 54 | 2026-08-23 17:23 | 639231025928115303 |
|
100 ms | 170.247.170.2 |
| 53 | 2026-08-23 16:30 | 639230994250157583 |
|
5 ms | 170.247.170.2 |
| 52 | 2026-08-23 16:14 | 639230984476411369 |
|
5 ms | 170.247.170.2 |
| 51 | 2026-08-23 15:58 | 639230974838373450 |
|
3 ms | 170.247.170.2 |
| 50 | 2026-08-23 15:42 | 639230965244277645 |
|
8 ms | 170.247.170.2 |
| 49 | 2026-08-23 15:25 | 639230955522101820 |
|
8 ms | 170.247.170.2 |
| 48 | 2026-08-23 15:09 | 639230945754521603 |
|
6 ms | 170.247.170.2 |
| 47 | 2026-08-23 14:53 | 639230935852040504 |
|
7 ms | 170.247.170.2 |
| 46 | 2026-08-23 14:37 | 639230926222061048 |
|
4 ms | 170.247.170.2 |
| 45 | 2026-08-23 14:20 | 639230916449726907 |
|
7 ms | 170.247.170.2 |
| 44 | 2026-08-23 14:04 | 639230906595053086 |
|
5 ms | 170.247.170.2 |
| 43 | 2026-08-23 13:47 | 639230896680429441 |
|
12 ms | 170.247.170.2 |
| 42 | 2026-08-23 13:31 | 639230886630210965 |
|
98 ms | 170.247.170.2 |
| 41 | 2026-08-23 12:39 | 639230855430405719 |
|
4 ms | 170.247.170.2 |
| 40 | 2026-08-23 12:22 | 639230845707499136 |
|
5 ms | 170.247.170.2 |
| 39 | 2026-08-23 12:06 | 639230836186805419 |
|
4 ms | 170.247.170.2 |
| 38 | 2026-08-23 11:50 | 639230826493828316 |
|
4 ms | 170.247.170.2 |
| 37 | 2026-08-23 11:34 | 639230816817882996 |
|
8 ms | 170.247.170.2 |
| 36 | 2026-08-23 11:18 | 639230806933854189 |
|
3 ms | 170.247.170.2 |
| 35 | 2026-08-23 11:01 | 639230797120243854 |
|
4 ms | 170.247.170.2 |
| 34 | 2026-08-23 10:45 | 639230787310272840 |
|
4 ms | 170.247.170.2 |
| 33 | 2026-08-23 10:29 | 639230777600173142 |
|
3 ms | 170.247.170.2 |
| 32 | 2026-08-23 10:12 | 639230767665024593 |
|
6 ms | 170.247.170.2 |
| 31 | 2026-08-23 09:56 | 639230757720962293 |
|
4 ms | 170.247.170.2 |
| 30 | 2026-08-23 09:39 | 639230747722189784 |
|
83 ms | 170.247.170.2 |
| 29 | 2026-08-23 08:47 | 639230716313923480 |
|
5 ms | 170.247.170.2 |
| 28 | 2026-08-23 08:31 | 639230706813835990 |
|
10 ms | 170.247.170.2 |
| 27 | 2026-08-23 08:14 | 639230696871062203 |
|
4 ms | 170.247.170.2 |
| 26 | 2026-08-23 07:58 | 639230687142781616 |
|
4 ms | 170.247.170.2 |
| 25 | 2026-08-23 07:42 | 639230677432142227 |
|
3 ms | 170.247.170.2 |
| 24 | 2026-08-23 07:26 | 639230667686258061 |
|
3 ms | 170.247.170.2 |
| 23 | 2026-08-23 07:10 | 639230658039243685 |
|
13 ms | 170.247.170.2 |
| 22 | 2026-08-23 06:54 | 639230648468473803 |
|
21 ms | 170.247.170.2 |
| 21 | 2026-08-23 06:38 | 639230638829658294 |
|
9 ms | 170.247.170.2 |
| 20 | 2026-08-23 06:22 | 639230629247017617 |
|
14 ms | 170.247.170.2 |
| 19 | 2026-08-23 06:06 | 639230619625318239 |
|
11 ms | 170.247.170.2 |
| 18 | 2026-08-23 05:49 | 639230609697630264 |
|
112 ms | 170.247.170.2 |
| 17 | 2026-08-23 04:57 | 639230578570131864 |
|
17 ms | 170.247.170.2 |
| 16 | 2026-08-23 04:41 | 639230568958963168 |
|
3 ms | 170.247.170.2 |
| 15 | 2026-08-23 04:25 | 639230559287611211 |
|
12 ms | 170.247.170.2 |
| 14 | 2026-08-23 04:09 | 639230549524312030 |
|
3 ms | 170.247.170.2 |
| 13 | 2026-08-23 03:52 | 639230539739801669 |
|
10 ms | 170.247.170.2 |
| 12 | 2026-08-23 03:36 | 639230530084069375 |
|
9 ms | 170.247.170.2 |
| 11 | 2026-08-23 03:20 | 639230520362691441 |
|
4 ms | 170.247.170.2 |
| 10 | 2026-08-23 03:04 | 639230510677194518 |
|
3 ms | 170.247.170.2 |
| 9 | 2026-08-23 02:48 | 639230501156002646 |
|
5 ms | 170.247.170.2 |
| 8 | 2026-08-23 02:32 | 639230491502198541 |
|
50 ms | 170.247.170.2 |
| 7 | 2026-08-23 02:16 | 639230481860318494 |
|
7 ms | 170.247.170.2 |
| 6 | 2026-08-23 01:59 | 639230471893008575 |
|
108 ms | 170.247.170.2 |
| 5 | 2026-08-23 01:06 | 639230440030877421 |
|
7 ms | 170.247.170.2 |
| 4 | 2026-08-23 00:50 | 639230430479725508 |
|
4 ms | 170.247.170.2 |
| 3 | 2026-08-23 00:34 | 639230420875160219 |
|
5 ms | 170.247.170.2 |
| 2 | 2026-08-23 00:18 | 639230411240692575 |
|
4 ms | 170.247.170.2 |
| 1 | 2026-08-23 00:02 | 639230401550806607 |
|
5 ms | 170.247.170.2 |