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 2026-08-14. For this date, NameServerHistory found 78 DNS check records, 78 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
78
Historical checks stored for this nameserver on selected date
Average Latency
13 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-14 23:57
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
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.net
Showing DNS history for 2026-08-14 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 | 2026-08-14 23:57 | 639223486524583054 |
|
2 ms | 170.247.170.2 |
| 77 | 2026-08-14 23:42 | 639223477272309567 |
|
5 ms | 170.247.170.2 |
| 76 | 2026-08-14 23:26 | 639223467876800215 |
|
7 ms | 170.247.170.2 |
| 75 | 2026-08-14 23:10 | 639223458466733344 |
|
2 ms | 170.247.170.2 |
| 74 | 2026-08-14 22:55 | 639223449196197019 |
|
6 ms | 170.247.170.2 |
| 73 | 2026-08-14 22:39 | 639223439729973302 |
|
4 ms | 170.247.170.2 |
| 72 | 2026-08-14 22:23 | 639223430298973377 |
|
3 ms | 170.247.170.2 |
| 71 | 2026-08-14 22:08 | 639223420812183061 |
|
4 ms | 170.247.170.2 |
| 70 | 2026-08-14 21:52 | 639223411307572360 |
|
4 ms | 170.247.170.2 |
| 69 | 2026-08-14 21:36 | 639223401895099116 |
|
108 ms | 170.247.170.2 |
| 68 | 2026-08-14 20:43 | 639223370328282191 |
|
6 ms | 170.247.170.2 |
| 67 | 2026-08-14 20:28 | 639223361156898888 |
|
15 ms | 170.247.170.2 |
| 66 | 2026-08-14 20:12 | 639223351683501109 |
|
5 ms | 170.247.170.2 |
| 65 | 2026-08-14 19:57 | 639223342485908428 |
|
4 ms | 170.247.170.2 |
| 64 | 2026-08-14 19:41 | 639223333113923772 |
|
12 ms | 170.247.170.2 |
| 63 | 2026-08-14 19:26 | 639223323766820131 |
|
4 ms | 170.247.170.2 |
| 62 | 2026-08-14 19:10 | 639223314500774279 |
|
5 ms | 170.247.170.2 |
| 61 | 2026-08-14 18:55 | 639223305225877159 |
|
5 ms | 170.247.170.2 |
| 60 | 2026-08-14 18:39 | 639223295834845965 |
|
3 ms | 170.247.170.2 |
| 59 | 2026-08-14 18:23 | 639223286312006616 |
|
7 ms | 170.247.170.2 |
| 58 | 2026-08-14 18:07 | 639223276659010988 |
|
6 ms | 170.247.170.2 |
| 57 | 2026-08-14 17:52 | 639223267203892251 |
|
95 ms | 170.247.170.2 |
| 56 | 2026-08-14 16:59 | 639223235652723921 |
|
4 ms | 170.247.170.2 |
| 55 | 2026-08-14 16:43 | 639223226156684619 |
|
14 ms | 170.247.170.2 |
| 54 | 2026-08-14 16:27 | 639223216737677817 |
|
8 ms | 170.247.170.2 |
| 53 | 2026-08-14 16:12 | 639223207303987036 |
|
7 ms | 170.247.170.2 |
| 52 | 2026-08-14 15:56 | 639223197972369650 |
|
5 ms | 170.247.170.2 |
| 51 | 2026-08-14 15:40 | 639223188476518684 |
|
3 ms | 170.247.170.2 |
| 50 | 2026-08-14 15:25 | 639223179029668254 |
|
4 ms | 170.247.170.2 |
| 49 | 2026-08-14 15:09 | 639223169668684371 |
|
6 ms | 170.247.170.2 |
| 48 | 2026-08-14 14:53 | 639223160270013058 |
|
6 ms | 170.247.170.2 |
| 47 | 2026-08-14 14:38 | 639223150848386507 |
|
3 ms | 170.247.170.2 |
| 46 | 2026-08-14 14:22 | 639223141514160124 |
|
7 ms | 170.247.170.2 |
| 45 | 2026-08-14 14:06 | 639223131908897269 |
|
81 ms | 170.247.170.2 |
| 44 | 2026-08-14 13:13 | 639223100084750932 |
|
4 ms | 170.247.170.2 |
| 43 | 2026-08-14 12:57 | 639223090744921973 |
|
12 ms | 170.247.170.2 |
| 42 | 2026-08-14 12:42 | 639223081343134137 |
|
10 ms | 170.247.170.2 |
| 41 | 2026-08-14 12:26 | 639223071917003603 |
|
3 ms | 170.247.170.2 |
| 40 | 2026-08-14 12:10 | 639223062407395043 |
|
5 ms | 170.247.170.2 |
| 39 | 2026-08-14 11:54 | 639223052970600447 |
|
11 ms | 170.247.170.2 |
| 38 | 2026-08-14 11:39 | 639223043584242187 |
|
5 ms | 170.247.170.2 |
| 37 | 2026-08-14 11:23 | 639223034248611856 |
|
11 ms | 170.247.170.2 |
| 36 | 2026-08-14 11:08 | 639223024816175094 |
|
5 ms | 170.247.170.2 |
| 35 | 2026-08-14 10:52 | 639223015278211871 |
|
4 ms | 170.247.170.2 |
| 34 | 2026-08-14 10:35 | 639223005387568522 |
|
7 ms | 170.247.170.2 |
| 33 | 2026-08-14 10:19 | 639222995944735037 |
|
90 ms | 170.247.170.2 |
| 32 | 2026-08-14 09:27 | 639222964532402826 |
|
20 ms | 170.247.170.2 |
| 31 | 2026-08-14 09:11 | 639222955031971579 |
|
12 ms | 170.247.170.2 |
| 30 | 2026-08-14 08:56 | 639222945616352079 |
|
4 ms | 170.247.170.2 |
| 29 | 2026-08-14 08:40 | 639222936296615644 |
|
5 ms | 170.247.170.2 |
| 28 | 2026-08-14 08:24 | 639222926913151746 |
|
7 ms | 170.247.170.2 |
| 27 | 2026-08-14 08:09 | 639222917608375722 |
|
4 ms | 170.247.170.2 |
| 26 | 2026-08-14 07:53 | 639222908294448500 |
|
5 ms | 170.247.170.2 |
| 25 | 2026-08-14 07:38 | 639222898918389753 |
|
6 ms | 170.247.170.2 |
| 24 | 2026-08-14 07:22 | 639222889625876211 |
|
2 ms | 170.247.170.2 |
| 23 | 2026-08-14 07:07 | 639222880353707528 |
|
5 ms | 170.247.170.2 |
| 22 | 2026-08-14 06:51 | 639222871065611259 |
|
11 ms | 170.247.170.2 |
| 21 | 2026-08-14 06:35 | 639222861517093112 |
|
88 ms | 170.247.170.2 |
| 20 | 2026-08-14 05:43 | 639222830182717637 |
|
4 ms | 170.247.170.2 |
| 19 | 2026-08-14 05:27 | 639222820714737422 |
|
12 ms | 170.247.170.2 |
| 18 | 2026-08-14 05:12 | 639222811404284741 |
|
14 ms | 170.247.170.2 |
| 17 | 2026-08-14 04:56 | 639222801994952240 |
|
2 ms | 170.247.170.2 |
| 16 | 2026-08-14 04:40 | 639222792581940911 |
|
10 ms | 170.247.170.2 |
| 15 | 2026-08-14 04:25 | 639222783296631220 |
|
5 ms | 170.247.170.2 |
| 14 | 2026-08-14 04:09 | 639222773909528001 |
|
9 ms | 170.247.170.2 |
| 13 | 2026-08-14 03:54 | 639222764574707991 |
|
3 ms | 170.247.170.2 |
| 12 | 2026-08-14 03:38 | 639222754982758281 |
|
17 ms | 170.247.170.2 |
| 11 | 2026-08-14 03:22 | 639222745650144239 |
|
23 ms | 170.247.170.2 |
| 10 | 2026-08-14 03:06 | 639222736060223018 |
|
7 ms | 170.247.170.2 |
| 9 | 2026-08-14 02:50 | 639222726529271510 |
|
97 ms | 170.247.170.2 |
| 8 | 2026-08-14 01:57 | 639222694791257846 |
|
9 ms | 170.247.170.2 |
| 7 | 2026-08-14 01:42 | 639222685350317820 |
|
3 ms | 170.247.170.2 |
| 6 | 2026-08-14 01:26 | 639222675895178560 |
|
5 ms | 170.247.170.2 |
| 5 | 2026-08-14 01:10 | 639222666344182743 |
|
4 ms | 170.247.170.2 |
| 4 | 2026-08-14 00:54 | 639222656762316965 |
|
3 ms | 170.247.170.2 |
| 3 | 2026-08-14 00:38 | 639222647109404695 |
|
5 ms | 170.247.170.2 |
| 2 | 2026-08-14 00:22 | 639222637659944389 |
|
12 ms | 170.247.170.2 |
| 1 | 2026-08-14 00:06 | 639222628151417313 |
|
3 ms | 170.247.170.2 |