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 2026-08-13. For this date, NameServerHistory found 72 DNS check records, 72 successful responses, 0 failed responses, and 14 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
72
Historical checks stored for this nameserver on selected date
Average Latency
14 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-13 23:50
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
72
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 2026-08-13 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 |
|---|---|---|---|---|---|
| 72 | 2026-08-13 23:50 | 639222618462620588 |
|
4 ms | 170.247.170.2 |
| 71 | 2026-08-13 23:34 | 639222608688333012 |
|
10 ms | 170.247.170.2 |
| 70 | 2026-08-13 23:17 | 639222598741756356 |
|
7 ms | 170.247.170.2 |
| 69 | 2026-08-13 23:01 | 639222588615244093 |
|
91 ms | 170.247.170.2 |
| 68 | 2026-08-13 22:07 | 639222556495289724 |
|
4 ms | 170.247.170.2 |
| 67 | 2026-08-13 21:50 | 639222546477917698 |
|
10 ms | 170.247.170.2 |
| 66 | 2026-08-13 21:33 | 639222536257653790 |
|
7 ms | 170.247.170.2 |
| 65 | 2026-08-13 21:16 | 639222525833084485 |
|
4 ms | 170.247.170.2 |
| 64 | 2026-08-13 20:59 | 639222515446085004 |
|
3 ms | 170.247.170.2 |
| 63 | 2026-08-13 20:41 | 639222505166766781 |
|
6 ms | 170.247.170.2 |
| 62 | 2026-08-13 20:24 | 639222494930541001 |
|
6 ms | 170.247.170.2 |
| 61 | 2026-08-13 20:07 | 639222484469216890 |
|
4 ms | 170.247.170.2 |
| 60 | 2026-08-13 19:50 | 639222474270039940 |
|
5 ms | 170.247.170.2 |
| 59 | 2026-08-13 19:33 | 639222464005587385 |
|
10 ms | 170.247.170.2 |
| 58 | 2026-08-13 19:15 | 639222453485975041 |
|
4 ms | 170.247.170.2 |
| 57 | 2026-08-13 18:58 | 639222442984828770 |
|
88 ms | 170.247.170.2 |
| 56 | 2026-08-13 18:03 | 639222410191353397 |
|
7 ms | 170.247.170.2 |
| 55 | 2026-08-13 17:46 | 639222399952628376 |
|
11 ms | 170.247.170.2 |
| 54 | 2026-08-13 17:29 | 639222389608608647 |
|
5 ms | 170.247.170.2 |
| 53 | 2026-08-13 17:12 | 639222379604012481 |
|
10 ms | 170.247.170.2 |
| 52 | 2026-08-13 16:55 | 639222369372672858 |
|
3 ms | 170.247.170.2 |
| 51 | 2026-08-13 16:38 | 639222359096909298 |
|
17 ms | 170.247.170.2 |
| 50 | 2026-08-13 16:21 | 639222348814301655 |
|
5 ms | 170.247.170.2 |
| 49 | 2026-08-13 16:04 | 639222338608331104 |
|
7 ms | 170.247.170.2 |
| 48 | 2026-08-13 15:47 | 639222328204609760 |
|
3 ms | 170.247.170.2 |
| 47 | 2026-08-13 15:29 | 639222317859759909 |
|
6 ms | 170.247.170.2 |
| 46 | 2026-08-13 15:12 | 639222307560137918 |
|
24 ms | 170.247.170.2 |
| 45 | 2026-08-13 14:55 | 639222297274357149 |
|
89 ms | 170.247.170.2 |
| 44 | 2026-08-13 14:01 | 639222265004477827 |
|
6 ms | 170.247.170.2 |
| 43 | 2026-08-13 13:45 | 639222255176583683 |
|
4 ms | 170.247.170.2 |
| 42 | 2026-08-13 13:28 | 639222245340146131 |
|
4 ms | 170.247.170.2 |
| 41 | 2026-08-13 13:12 | 639222235662219956 |
|
5 ms | 170.247.170.2 |
| 40 | 2026-08-13 12:56 | 639222225817223284 |
|
3 ms | 170.247.170.2 |
| 39 | 2026-08-13 12:40 | 639222216341869648 |
|
6 ms | 170.247.170.2 |
| 38 | 2026-08-13 12:24 | 639222206848442189 |
|
6 ms | 170.247.170.2 |
| 37 | 2026-08-13 12:09 | 639222197538963225 |
|
6 ms | 170.247.170.2 |
| 36 | 2026-08-13 11:53 | 639222188113685569 |
|
7 ms | 170.247.170.2 |
| 35 | 2026-08-13 11:38 | 639222178880138458 |
|
5 ms | 170.247.170.2 |
| 34 | 2026-08-13 11:22 | 639222169343013317 |
|
4 ms | 170.247.170.2 |
| 33 | 2026-08-13 11:06 | 639222159910600596 |
|
102 ms | 170.247.170.2 |
| 32 | 2026-08-13 10:14 | 639222128676274866 |
|
14 ms | 170.247.170.2 |
| 31 | 2026-08-13 09:58 | 639222119169781983 |
|
3 ms | 170.247.170.2 |
| 30 | 2026-08-13 09:43 | 639222109996148889 |
|
8 ms | 170.247.170.2 |
| 29 | 2026-08-13 09:27 | 639222100791323799 |
|
4 ms | 170.247.170.2 |
| 28 | 2026-08-13 09:12 | 639222091647893142 |
|
6 ms | 170.247.170.2 |
| 27 | 2026-08-13 08:57 | 639222082524717649 |
|
6 ms | 170.247.170.2 |
| 26 | 2026-08-13 08:42 | 639222073378630456 |
|
22 ms | 170.247.170.2 |
| 25 | 2026-08-13 08:27 | 639222064537306701 |
|
5 ms | 170.247.170.2 |
| 24 | 2026-08-13 08:12 | 639222055409471864 |
|
4 ms | 170.247.170.2 |
| 23 | 2026-08-13 07:56 | 639222046117152411 |
|
8 ms | 170.247.170.2 |
| 22 | 2026-08-13 07:41 | 639222036915107067 |
|
8 ms | 170.247.170.2 |
| 21 | 2026-08-13 07:26 | 639222027654889141 |
|
75 ms | 170.247.170.2 |
| 20 | 2026-08-13 06:34 | 639221996824612035 |
|
13 ms | 170.247.170.2 |
| 19 | 2026-08-13 06:19 | 639221987863418113 |
|
3 ms | 170.247.170.2 |
| 18 | 2026-08-13 06:05 | 639221979006823112 |
|
4 ms | 170.247.170.2 |
| 17 | 2026-08-13 05:50 | 639221970068466615 |
|
7 ms | 170.247.170.2 |
| 16 | 2026-08-13 05:35 | 639221961001585139 |
|
4 ms | 170.247.170.2 |
| 15 | 2026-08-13 05:20 | 639221952104046397 |
|
7 ms | 170.247.170.2 |
| 14 | 2026-08-13 05:05 | 639221943247694484 |
|
4 ms | 170.247.170.2 |
| 13 | 2026-08-13 04:51 | 639221934603388241 |
|
4 ms | 170.247.170.2 |
| 12 | 2026-08-13 04:36 | 639221925729273358 |
|
20 ms | 170.247.170.2 |
| 11 | 2026-08-13 04:21 | 639221916777813401 |
|
5 ms | 170.247.170.2 |
| 10 | 2026-08-13 04:06 | 639221907816913910 |
|
3 ms | 170.247.170.2 |
| 9 | 2026-08-13 03:51 | 639221898639694322 |
|
98 ms | 170.247.170.2 |
| 8 | 2026-08-13 03:00 | 639221868257567489 |
|
9 ms | 170.247.170.2 |
| 7 | 2026-08-13 02:45 | 639221859270235608 |
|
6 ms | 170.247.170.2 |
| 6 | 2026-08-13 02:30 | 639221850184464515 |
|
5 ms | 170.247.170.2 |
| 5 | 2026-08-13 02:15 | 639221841141973425 |
|
4 ms | 170.247.170.2 |
| 4 | 2026-08-13 01:24 | 639221810548753083 |
|
19 ms | 170.247.170.2 |
| 3 | 2026-08-13 01:09 | 639221801656796262 |
|
4 ms | 170.247.170.2 |
| 2 | 2026-08-13 00:54 | 639221792658715334 |
|
2 ms | 170.247.170.2 |
| 1 | 2026-08-13 00:39 | 639221783571379176 |
|
5 ms | 170.247.170.2 |