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 2026-08-17. For this date, NameServerHistory found 72 DNS check records, 71 successful responses, 1 failed responses, and 163 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
163 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-17 23:47
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
71
Checks that returned a measurable response
Failed Responses
1
Checks with no response or no returned latency
Failure Rate
1%
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 2026-08-17 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 | 2026-08-17 23:47 | 639226072268080268 |
|
3 ms | 198.41.0.4 |
| 71 | 2026-08-17 23:31 | 639226062577647657 |
|
21 ms | 198.41.0.4 |
| 70 | 2026-08-17 22:38 | 639226031060857136 |
|
10 ms | 198.41.0.4 |
| 69 | 2026-08-17 22:22 | 639226021535117364 |
|
31 ms | 198.41.0.4 |
| 68 | 2026-08-17 22:06 | 639226011884237078 |
|
43 ms | 198.41.0.4 |
| 67 | 2026-08-17 21:50 | 639226002309299142 |
|
3 ms | 198.41.0.4 |
| 66 | 2026-08-17 21:34 | 639225992791784448 |
|
9 ms | 198.41.0.4 |
| 65 | 2026-08-17 21:18 | 639225983045271390 |
|
2031 ms | 198.41.0.4 |
| 64 | 2026-08-17 21:02 | 639225973246293513 |
|
9 ms | 198.41.0.4 |
| 63 | 2026-08-17 20:46 | 639225963620186236 |
|
22 ms | 198.41.0.4 |
| 62 | 2026-08-17 20:29 | 639225953899183916 |
|
8 ms | 198.41.0.4 |
| 61 | 2026-08-17 20:14 | 639225944391528206 |
|
7 ms | 198.41.0.4 |
| 60 | 2026-08-17 19:57 | 639225934593254169 |
|
43 ms | 198.41.0.4 |
| 59 | 2026-08-17 19:41 | 639225924669984512 |
|
58 ms | 198.41.0.4 |
| 58 | 2026-08-17 18:48 | 639225893048561320 |
|
28 ms | 198.41.0.4 |
| 57 | 2026-08-17 18:32 | 639225883481298424 |
|
6 ms | 198.41.0.4 |
| 56 | 2026-08-17 18:16 | 639225873845394034 |
|
7 ms | 198.41.0.4 |
| 55 | 2026-08-17 18:00 | 639225864216078662 |
|
1 ms | 198.41.0.4 |
| 54 | 2026-08-17 17:44 | 639225854541857773 |
|
2012 ms | 198.41.0.4 |
| 53 | 2026-08-17 17:28 | 639225844733604072 |
|
16 ms | 198.41.0.4 |
| 52 | 2026-08-17 17:11 | 639225835085229232 |
|
21 ms | 198.41.0.4 |
| 51 | 2026-08-17 16:55 | 639225825349373981 |
|
25 ms | 198.41.0.4 |
| 50 | 2026-08-17 16:39 | 639225815690604161 |
|
69 ms | 198.41.0.4 |
| 49 | 2026-08-17 16:23 | 639225805952472306 |
|
21 ms | 198.41.0.4 |
| 48 | 2026-08-17 16:07 | 639225796264729638 |
|
19 ms | 198.41.0.4 |
| 47 | 2026-08-17 15:50 | 639225786326499329 |
|
36 ms | 198.41.0.4 |
| 46 | 2026-08-17 14:58 | 639225754798130711 |
|
15 ms | 198.41.0.4 |
| 45 | 2026-08-17 14:42 | 639225745123193922 |
|
5 ms | 198.41.0.4 |
| 44 | 2026-08-17 14:26 | 639225735540597271 |
|
16 ms | 198.41.0.4 |
| 43 | 2026-08-17 14:09 | 639225725894857396 |
|
16 ms | 198.41.0.4 |
| 42 | 2026-08-17 13:53 | 639225716249606913 |
|
2031 ms | 198.41.0.4 |
| 41 | 2026-08-17 13:37 | 639225706638238179 |
|
8 ms | 198.41.0.4 |
| 40 | 2026-08-17 13:21 | 639225696949691423 |
|
29 ms | 198.41.0.4 |
| 39 | 2026-08-17 13:05 | 639225687286186336 |
|
- | |
| 38 | 2026-08-17 12:49 | 639225677679573133 |
|
4 ms | 198.41.0.4 |
| 37 | 2026-08-17 12:33 | 639225667957861024 |
|
29 ms | 198.41.0.4 |
| 36 | 2026-08-17 12:17 | 639225658298791618 |
|
59 ms | 198.41.0.4 |
| 35 | 2026-08-17 12:01 | 639225648583652785 |
|
66 ms | 198.41.0.4 |
| 34 | 2026-08-17 11:08 | 639225617000524308 |
|
9 ms | 198.41.0.4 |
| 33 | 2026-08-17 10:52 | 639225607668541600 |
|
67 ms | 198.41.0.4 |
| 32 | 2026-08-17 10:36 | 639225598117279238 |
|
3 ms | 198.41.0.4 |
| 31 | 2026-08-17 10:21 | 639225588751002710 |
|
6 ms | 198.41.0.4 |
| 30 | 2026-08-17 10:05 | 639225579295831051 |
|
14 ms | 198.41.0.4 |
| 29 | 2026-08-17 09:49 | 639225569761469940 |
|
28 ms | 198.41.0.4 |
| 28 | 2026-08-17 09:33 | 639225560161422333 |
|
70 ms | 198.41.0.4 |
| 27 | 2026-08-17 09:18 | 639225550739955565 |
|
2 ms | 198.41.0.4 |
| 26 | 2026-08-17 09:02 | 639225541125222426 |
|
2 ms | 198.41.0.4 |
| 25 | 2026-08-17 08:46 | 639225531526675983 |
|
11 ms | 198.41.0.4 |
| 24 | 2026-08-17 08:29 | 639225521915528222 |
|
8 ms | 198.41.0.4 |
| 23 | 2026-08-17 08:13 | 639225512148151789 |
|
48 ms | 198.41.0.4 |
| 22 | 2026-08-17 07:21 | 639225480786142412 |
|
19 ms | 198.41.0.4 |
| 21 | 2026-08-17 07:05 | 639225471394348551 |
|
54 ms | 198.41.0.4 |
| 20 | 2026-08-17 06:50 | 639225462031685068 |
|
25 ms | 198.41.0.4 |
| 19 | 2026-08-17 06:34 | 639225452639458328 |
|
34 ms | 198.41.0.4 |
| 18 | 2026-08-17 06:18 | 639225443300966543 |
|
39 ms | 198.41.0.4 |
| 17 | 2026-08-17 06:03 | 639225433880499379 |
|
29 ms | 198.41.0.4 |
| 16 | 2026-08-17 05:47 | 639225424395198277 |
|
10 ms | 198.41.0.4 |
| 15 | 2026-08-17 05:31 | 639225414744137487 |
|
36 ms | 198.41.0.4 |
| 14 | 2026-08-17 05:15 | 639225405186783164 |
|
10 ms | 198.41.0.4 |
| 13 | 2026-08-17 04:59 | 639225395563669822 |
|
2032 ms | 198.41.0.4 |
| 12 | 2026-08-17 04:43 | 639225386076645158 |
|
3 ms | 198.41.0.4 |
| 11 | 2026-08-17 04:27 | 639225376620669704 |
|
9 ms | 198.41.0.4 |
| 10 | 2026-08-17 03:36 | 639225345580892706 |
|
25 ms | 198.41.0.4 |
| 9 | 2026-08-17 03:20 | 639225336207383710 |
|
2 ms | 198.41.0.4 |
| 8 | 2026-08-17 03:04 | 639225326726565001 |
|
11 ms | 198.41.0.4 |
| 7 | 2026-08-17 02:48 | 639225317249271010 |
|
2065 ms | 198.41.0.4 |
| 6 | 2026-08-17 01:57 | 639225286280886044 |
|
3 ms | 198.41.0.4 |
| 5 | 2026-08-17 01:41 | 639225276872567548 |
|
7 ms | 198.41.0.4 |
| 4 | 2026-08-17 01:25 | 639225267353865348 |
|
3 ms | 198.41.0.4 |
| 3 | 2026-08-17 01:10 | 639225258033914248 |
|
3 ms | 198.41.0.4 |
| 2 | 2026-08-17 00:17 | 639225226652221583 |
|
2 ms | 198.41.0.4 |
| 1 | 2026-08-17 00:02 | 639225217156387684 |
|
16 ms | 198.41.0.4 |