History for a.root-servers.net
Domain: root-servers.net • Tracking since 2026-08-04 23:25 UTC
DNS response history for a.root-servers.net
a.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 2026-08-21. For this date, NameServerHistory found 72 DNS check records, 72 successful responses, 0 failed responses, and 352 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 a.root-servers.net.
Records on Selected Date
72
Historical checks stored for this nameserver on selected date
Average Latency
352 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-21 23:46
All timestamps shown in UTC
Latest Resolved IP on Selected Date
198.41.0.4
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 a.root-servers.net
Showing DNS history for 2026-08-21 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 | 2026-08-21 23:46 | 639229527598660841 |
|
19 ms | 198.41.0.4 |
| 71 | 2026-08-21 23:30 | 639229517954323214 |
|
8 ms | 198.41.0.4 |
| 70 | 2026-08-21 23:13 | 639229508269999021 |
|
34 ms | 198.41.0.4 |
| 69 | 2026-08-21 22:57 | 639229498559060171 |
|
41 ms | 198.41.0.4 |
| 68 | 2026-08-21 22:41 | 639229488519347586 |
|
60 ms | 198.41.0.4 |
| 67 | 2026-08-21 21:47 | 639229456606578934 |
|
3 ms | 198.41.0.4 |
| 66 | 2026-08-21 21:31 | 639229446985772499 |
|
35 ms | 198.41.0.4 |
| 65 | 2026-08-21 21:15 | 639229437367313098 |
|
25 ms | 198.41.0.4 |
| 64 | 2026-08-21 21:00 | 639229427923950391 |
|
22 ms | 198.41.0.4 |
| 63 | 2026-08-21 20:43 | 639229418168588854 |
|
5 ms | 198.41.0.4 |
| 62 | 2026-08-21 20:27 | 639229408345678334 |
|
13 ms | 198.41.0.4 |
| 61 | 2026-08-21 20:11 | 639229398616354648 |
|
2036 ms | 198.41.0.4 |
| 60 | 2026-08-21 19:54 | 639229388634592323 |
|
5 ms | 198.41.0.4 |
| 59 | 2026-08-21 19:38 | 639229378792837692 |
|
2013 ms | 198.41.0.4 |
| 58 | 2026-08-21 19:22 | 639229369154682311 |
|
2 ms | 198.41.0.4 |
| 57 | 2026-08-21 19:05 | 639229359248017926 |
|
2009 ms | 198.41.0.4 |
| 56 | 2026-08-21 18:48 | 639229349124294642 |
|
14 ms | 198.41.0.4 |
| 55 | 2026-08-21 17:56 | 639229317791715692 |
|
10 ms | 198.41.0.4 |
| 54 | 2026-08-21 17:40 | 639229308115194575 |
|
29 ms | 198.41.0.4 |
| 53 | 2026-08-21 17:24 | 639229298320320558 |
|
52 ms | 198.41.0.4 |
| 52 | 2026-08-21 17:07 | 639229288674863221 |
|
18 ms | 198.41.0.4 |
| 51 | 2026-08-21 16:51 | 639229278983677079 |
|
7 ms | 198.41.0.4 |
| 50 | 2026-08-21 16:35 | 639229269405517175 |
|
18 ms | 198.41.0.4 |
| 49 | 2026-08-21 16:19 | 639229259594798244 |
|
2028 ms | 198.41.0.4 |
| 48 | 2026-08-21 16:03 | 639229249736681188 |
|
33 ms | 198.41.0.4 |
| 47 | 2026-08-21 15:46 | 639229239699417787 |
|
11 ms | 198.41.0.4 |
| 46 | 2026-08-21 15:29 | 639229229621964033 |
|
3 ms | 198.41.0.4 |
| 45 | 2026-08-21 15:12 | 639229219567270965 |
|
27 ms | 198.41.0.4 |
| 44 | 2026-08-21 14:55 | 639229209406666856 |
|
12 ms | 198.41.0.4 |
| 43 | 2026-08-21 14:03 | 639229177815876178 |
|
10 ms | 198.41.0.4 |
| 42 | 2026-08-21 13:47 | 639229168243572685 |
|
20 ms | 198.41.0.4 |
| 41 | 2026-08-21 13:31 | 639229158599856475 |
|
17 ms | 198.41.0.4 |
| 40 | 2026-08-21 13:15 | 639229148998940902 |
|
9 ms | 198.41.0.4 |
| 39 | 2026-08-21 12:58 | 639229139276923594 |
|
7 ms | 198.41.0.4 |
| 38 | 2026-08-21 12:43 | 639229129709912394 |
|
2023 ms | 198.41.0.4 |
| 37 | 2026-08-21 12:26 | 639229119801488500 |
|
14 ms | 198.41.0.4 |
| 36 | 2026-08-21 12:10 | 639229110135262458 |
|
13 ms | 198.41.0.4 |
| 35 | 2026-08-21 11:54 | 639229100336051392 |
|
12 ms | 198.41.0.4 |
| 34 | 2026-08-21 11:37 | 639229090641415626 |
|
20 ms | 198.41.0.4 |
| 33 | 2026-08-21 11:21 | 639229080702683947 |
|
13 ms | 198.41.0.4 |
| 32 | 2026-08-21 11:04 | 639229070601456699 |
|
2008 ms | 198.41.0.4 |
| 31 | 2026-08-21 10:11 | 639229038947447232 |
|
8 ms | 198.41.0.4 |
| 30 | 2026-08-21 09:55 | 639229029268708773 |
|
2016 ms | 198.41.0.4 |
| 29 | 2026-08-21 09:39 | 639229019647910603 |
|
7 ms | 198.41.0.4 |
| 28 | 2026-08-21 09:23 | 639229009983843738 |
|
2027 ms | 198.41.0.4 |
| 27 | 2026-08-21 09:07 | 639229000203331882 |
|
2022 ms | 198.41.0.4 |
| 26 | 2026-08-21 08:50 | 639228990302335999 |
|
3 ms | 198.41.0.4 |
| 25 | 2026-08-21 08:34 | 639228980567740722 |
|
2 ms | 198.41.0.4 |
| 24 | 2026-08-21 08:18 | 639228970762445174 |
|
43 ms | 198.41.0.4 |
| 23 | 2026-08-21 08:01 | 639228961065054445 |
|
4 ms | 198.41.0.4 |
| 22 | 2026-08-21 07:45 | 639228951224649885 |
|
11 ms | 198.41.0.4 |
| 21 | 2026-08-21 07:28 | 639228941303864592 |
|
10 ms | 198.41.0.4 |
| 20 | 2026-08-21 07:12 | 639228931191328583 |
|
25 ms | 198.41.0.4 |
| 19 | 2026-08-21 06:19 | 639228899518173317 |
|
2 ms | 198.41.0.4 |
| 18 | 2026-08-21 06:03 | 639228889785027669 |
|
16 ms | 198.41.0.4 |
| 17 | 2026-08-21 05:46 | 639228880106330161 |
|
7 ms | 198.41.0.4 |
| 16 | 2026-08-21 05:30 | 639228870316184091 |
|
10 ms | 198.41.0.4 |
| 15 | 2026-08-21 05:14 | 639228860695366512 |
|
29 ms | 198.41.0.4 |
| 14 | 2026-08-21 04:58 | 639228851027209500 |
|
14 ms | 198.41.0.4 |
| 13 | 2026-08-21 04:42 | 639228841479265462 |
|
14 ms | 198.41.0.4 |
| 12 | 2026-08-21 04:26 | 639228831752962260 |
|
2011 ms | 198.41.0.4 |
| 11 | 2026-08-21 04:10 | 639228821953295483 |
|
13 ms | 198.41.0.4 |
| 10 | 2026-08-21 03:53 | 639228812227429953 |
|
20 ms | 198.41.0.4 |
| 9 | 2026-08-21 03:37 | 639228802476107538 |
|
37 ms | 198.41.0.4 |
| 8 | 2026-08-21 03:21 | 639228792525492032 |
|
86 ms | 198.41.0.4 |
| 7 | 2026-08-21 02:28 | 639228761131421385 |
|
27 ms | 198.41.0.4 |
| 6 | 2026-08-21 02:12 | 639228751571206692 |
|
3 ms | 198.41.0.4 |
| 5 | 2026-08-21 01:56 | 639228741705571019 |
|
4022 ms | 198.41.0.4 |
| 4 | 2026-08-21 01:39 | 639228731642208228 |
|
52 ms | 198.41.0.4 |
| 3 | 2026-08-21 00:47 | 639228700387002072 |
|
36 ms | 198.41.0.4 |
| 2 | 2026-08-21 00:31 | 639228690742014433 |
|
7 ms | 198.41.0.4 |
| 1 | 2026-08-21 00:14 | 639228680877937122 |
|
19 ms | 198.41.0.4 |