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 2026-08-12. For this date, NameServerHistory found 62 DNS check records, 62 successful responses, 0 failed responses, and 13 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
62
Historical checks stored for this nameserver on selected date
Average Latency
13 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-12 23:48
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
62
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 2026-08-12 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 |
|---|---|---|---|---|---|
| 62 | 2026-08-12 23:48 | 639221753022017039 |
|
6 ms | 170.247.170.2 |
| 61 | 2026-08-12 23:33 | 639221744107644868 |
|
9 ms | 170.247.170.2 |
| 60 | 2026-08-12 23:18 | 639221735030187244 |
|
3 ms | 170.247.170.2 |
| 59 | 2026-08-12 23:03 | 639221725815508109 |
|
90 ms | 170.247.170.2 |
| 58 | 2026-08-12 22:11 | 639221694790955973 |
|
4 ms | 170.247.170.2 |
| 57 | 2026-08-12 21:55 | 639221685562451720 |
|
5 ms | 170.247.170.2 |
| 56 | 2026-08-12 21:40 | 639221676023655289 |
|
8 ms | 170.247.170.2 |
| 55 | 2026-08-12 21:24 | 639221666449119409 |
|
3 ms | 170.247.170.2 |
| 54 | 2026-08-12 20:32 | 639221635456432556 |
|
18 ms | 170.247.170.2 |
| 53 | 2026-08-12 20:17 | 639221626313054202 |
|
5 ms | 170.247.170.2 |
| 52 | 2026-08-12 20:01 | 639221617091958857 |
|
13 ms | 170.247.170.2 |
| 51 | 2026-08-12 19:46 | 639221607786737151 |
|
3 ms | 170.247.170.2 |
| 50 | 2026-08-12 18:54 | 639221576664330059 |
|
3 ms | 170.247.170.2 |
| 49 | 2026-08-12 18:39 | 639221567514216674 |
|
15 ms | 170.247.170.2 |
| 48 | 2026-08-12 18:23 | 639221558399762524 |
|
8 ms | 170.247.170.2 |
| 47 | 2026-08-12 18:08 | 639221549052016282 |
|
91 ms | 170.247.170.2 |
| 46 | 2026-08-12 17:16 | 639221517673834934 |
|
3 ms | 170.247.170.2 |
| 45 | 2026-08-12 17:00 | 639221508282311633 |
|
5 ms | 170.247.170.2 |
| 44 | 2026-08-12 16:44 | 639221498786324983 |
|
6 ms | 170.247.170.2 |
| 43 | 2026-08-12 16:28 | 639221489157589737 |
|
4 ms | 170.247.170.2 |
| 42 | 2026-08-12 15:36 | 639221457655914645 |
|
3 ms | 170.247.170.2 |
| 41 | 2026-08-12 15:20 | 639221448164090526 |
|
8 ms | 170.247.170.2 |
| 40 | 2026-08-12 15:04 | 639221438725783630 |
|
5 ms | 170.247.170.2 |
| 39 | 2026-08-12 14:48 | 639221429178071087 |
|
20 ms | 170.247.170.2 |
| 38 | 2026-08-12 13:56 | 639221397761278719 |
|
4 ms | 170.247.170.2 |
| 37 | 2026-08-12 13:40 | 639221388200567278 |
|
10 ms | 170.247.170.2 |
| 36 | 2026-08-12 13:24 | 639221378483570949 |
|
4 ms | 170.247.170.2 |
| 35 | 2026-08-12 13:08 | 639221368872360139 |
|
100 ms | 170.247.170.2 |
| 34 | 2026-08-12 12:15 | 639221337226647415 |
|
5 ms | 170.247.170.2 |
| 33 | 2026-08-12 11:59 | 639221327924087446 |
|
5 ms | 170.247.170.2 |
| 32 | 2026-08-12 11:43 | 639221318096976375 |
|
8 ms | 170.247.170.2 |
| 31 | 2026-08-12 11:27 | 639221308343145274 |
|
8 ms | 170.247.170.2 |
| 30 | 2026-08-12 10:35 | 639221277089610470 |
|
5 ms | 170.247.170.2 |
| 29 | 2026-08-12 10:19 | 639221267628136359 |
|
12 ms | 170.247.170.2 |
| 28 | 2026-08-12 10:03 | 639221257907569952 |
|
13 ms | 170.247.170.2 |
| 27 | 2026-08-12 09:47 | 639221248402420965 |
|
7 ms | 170.247.170.2 |
| 26 | 2026-08-12 08:54 | 639221216797540533 |
|
3 ms | 170.247.170.2 |
| 25 | 2026-08-12 08:38 | 639221207385792352 |
|
4 ms | 170.247.170.2 |
| 24 | 2026-08-12 08:23 | 639221198078534844 |
|
6 ms | 170.247.170.2 |
| 23 | 2026-08-12 08:07 | 639221188677585577 |
|
97 ms | 170.247.170.2 |
| 22 | 2026-08-12 07:15 | 639221157276484143 |
|
4 ms | 170.247.170.2 |
| 21 | 2026-08-12 06:59 | 639221147876262183 |
|
11 ms | 170.247.170.2 |
| 20 | 2026-08-12 06:43 | 639221138388812469 |
|
6 ms | 170.247.170.2 |
| 19 | 2026-08-12 06:28 | 639221128987381118 |
|
4 ms | 170.247.170.2 |
| 18 | 2026-08-12 05:36 | 639221097816416095 |
|
4 ms | 170.247.170.2 |
| 17 | 2026-08-12 05:20 | 639221088508065616 |
|
4 ms | 170.247.170.2 |
| 16 | 2026-08-12 05:05 | 639221079092308503 |
|
3 ms | 170.247.170.2 |
| 15 | 2026-08-12 04:49 | 639221069595873597 |
|
4 ms | 170.247.170.2 |
| 14 | 2026-08-12 03:57 | 639221038601577496 |
|
3 ms | 170.247.170.2 |
| 13 | 2026-08-12 03:42 | 639221029533901299 |
|
6 ms | 170.247.170.2 |
| 12 | 2026-08-12 03:27 | 639221020333828965 |
|
5 ms | 170.247.170.2 |
| 11 | 2026-08-12 03:11 | 639221011110510484 |
|
83 ms | 170.247.170.2 |
| 10 | 2026-08-12 02:19 | 639220979815209769 |
|
4 ms | 170.247.170.2 |
| 9 | 2026-08-12 02:04 | 639220970971410921 |
|
7 ms | 170.247.170.2 |
| 8 | 2026-08-12 01:49 | 639220961848982361 |
|
4 ms | 170.247.170.2 |
| 7 | 2026-08-12 01:34 | 639220952784591501 |
|
7 ms | 170.247.170.2 |
| 6 | 2026-08-12 01:19 | 639220943893596731 |
|
5 ms | 170.247.170.2 |
| 5 | 2026-08-12 01:04 | 639220934954704520 |
|
4 ms | 170.247.170.2 |
| 4 | 2026-08-12 00:49 | 639220925792457751 |
|
12 ms | 170.247.170.2 |
| 3 | 2026-08-12 00:34 | 639220916610063538 |
|
5 ms | 170.247.170.2 |
| 2 | 2026-08-12 00:18 | 639220907229361754 |
|
10 ms | 170.247.170.2 |
| 1 | 2026-08-12 00:03 | 639220897896762127 |
|
8 ms | 170.247.170.2 |