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 2026-08-09. For this date, NameServerHistory found 78 DNS check records, 77 successful responses, 1 failed responses, and 222 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
78
Historical checks stored for this nameserver on selected date
Average Latency
222 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-09 23:14
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
77
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 2026-08-09 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 | 2026-08-09 23:14 | 639219137912168440 |
|
5 ms | 198.41.0.4 |
| 77 | 2026-08-09 23:00 | 639219129014206359 |
|
48 ms | 198.41.0.4 |
| 76 | 2026-08-09 22:45 | 639219120129816185 |
|
20 ms | 198.41.0.4 |
| 75 | 2026-08-09 22:30 | 639219111180200055 |
|
2010 ms | 198.41.0.4 |
| 74 | 2026-08-09 22:15 | 639219102397272208 |
|
2 ms | 198.41.0.4 |
| 73 | 2026-08-09 22:00 | 639219093318422880 |
|
2 ms | 198.41.0.4 |
| 72 | 2026-08-09 21:45 | 639219084400315753 |
|
8 ms | 198.41.0.4 |
| 71 | 2026-08-09 21:30 | 639219075254551587 |
|
2026 ms | 198.41.0.4 |
| 70 | 2026-08-09 21:14 | 639219065729192158 |
|
68 ms | 198.41.0.4 |
| 69 | 2026-08-09 20:59 | 639219056747802098 |
|
12 ms | 198.41.0.4 |
| 68 | 2026-08-09 20:44 | 639219047713450952 |
|
9 ms | 198.41.0.4 |
| 67 | 2026-08-09 20:29 | 639219038561445315 |
|
30 ms | 198.41.0.4 |
| 66 | 2026-08-09 19:37 | 639219007390383771 |
|
12 ms | 198.41.0.4 |
| 65 | 2026-08-09 19:23 | 639218998523265596 |
|
8 ms | 198.41.0.4 |
| 64 | 2026-08-09 19:08 | 639218989631630804 |
|
2 ms | 198.41.0.4 |
| 63 | 2026-08-09 18:53 | 639218980808450892 |
|
2 ms | 198.41.0.4 |
| 62 | 2026-08-09 18:38 | 639218971852160604 |
|
3 ms | 198.41.0.4 |
| 61 | 2026-08-09 18:23 | 639218962783650906 |
|
31 ms | 198.41.0.4 |
| 60 | 2026-08-09 18:08 | 639218953792820819 |
|
3 ms | 198.41.0.4 |
| 59 | 2026-08-09 17:53 | 639218944959692876 |
|
21 ms | 198.41.0.4 |
| 58 | 2026-08-09 17:39 | 639218936169104506 |
|
3 ms | 198.41.0.4 |
| 57 | 2026-08-09 17:24 | 639218927166062556 |
|
2013 ms | 198.41.0.4 |
| 56 | 2026-08-09 17:09 | 639218918015715420 |
|
67 ms | 198.41.0.4 |
| 55 | 2026-08-09 16:53 | 639218908881852638 |
|
9 ms | 198.41.0.4 |
| 54 | 2026-08-09 16:02 | 639218877956262035 |
|
7 ms | 198.41.0.4 |
| 53 | 2026-08-09 15:47 | 639218869143729797 |
|
66 ms | 198.41.0.4 |
| 52 | 2026-08-09 15:32 | 639218860485298832 |
|
4 ms | 198.41.0.4 |
| 51 | 2026-08-09 15:18 | 639218851607906747 |
|
5 ms | 198.41.0.4 |
| 50 | 2026-08-09 15:03 | 639218842720839568 |
|
2007 ms | 198.41.0.4 |
| 49 | 2026-08-09 14:48 | 639218833878788864 |
|
42 ms | 198.41.0.4 |
| 48 | 2026-08-09 14:33 | 639218825180862573 |
|
6 ms | 198.41.0.4 |
| 47 | 2026-08-09 14:19 | 639218816469621951 |
|
33 ms | 198.41.0.4 |
| 46 | 2026-08-09 14:04 | 639218807685036212 |
|
2 ms | 198.41.0.4 |
| 45 | 2026-08-09 13:50 | 639218798978271509 |
|
5 ms | 198.41.0.4 |
| 44 | 2026-08-09 13:35 | 639218790065423597 |
|
7 ms | 198.41.0.4 |
| 43 | 2026-08-09 13:20 | 639218781304584862 |
|
2016 ms | 198.41.0.4 |
| 42 | 2026-08-09 12:30 | 639218750311179000 |
|
28 ms | 198.41.0.4 |
| 41 | 2026-08-09 12:16 | 639218741750420268 |
|
10 ms | 198.41.0.4 |
| 40 | 2026-08-09 12:02 | 639218733057535576 |
|
39 ms | 198.41.0.4 |
| 39 | 2026-08-09 11:47 | 639218724471329044 |
|
5 ms | 198.41.0.4 |
| 38 | 2026-08-09 11:33 | 639218715911974203 |
|
4 ms | 198.41.0.4 |
| 37 | 2026-08-09 11:19 | 639218707310812834 |
|
10 ms | 198.41.0.4 |
| 36 | 2026-08-09 11:04 | 639218698790485612 |
|
8 ms | 198.41.0.4 |
| 35 | 2026-08-09 10:50 | 639218690367692706 |
|
11 ms | 198.41.0.4 |
| 34 | 2026-08-09 10:36 | 639218681923173883 |
|
8 ms | 198.41.0.4 |
| 33 | 2026-08-09 10:22 | 639218673547179738 |
|
4 ms | 198.41.0.4 |
| 32 | 2026-08-09 10:08 | 639218664890274867 |
|
7 ms | 198.41.0.4 |
| 31 | 2026-08-09 09:53 | 639218656036928157 |
|
26 ms | 198.41.0.4 |
| 30 | 2026-08-09 08:59 | 639218624808018222 |
|
6 ms | 198.41.0.4 |
| 29 | 2026-08-09 08:45 | 639218616243340806 |
|
3 ms | 198.41.0.4 |
| 28 | 2026-08-09 08:30 | 639218607397811973 |
|
3 ms | 198.41.0.4 |
| 27 | 2026-08-09 08:16 | 639218598812444454 |
|
10 ms | 198.41.0.4 |
| 26 | 2026-08-09 08:01 | 639218590219570048 |
|
9 ms | 198.41.0.4 |
| 25 | 2026-08-09 07:47 | 639218581690210758 |
|
3 ms | 198.41.0.4 |
| 24 | 2026-08-09 07:33 | 639218573057388822 |
|
27 ms | 198.41.0.4 |
| 23 | 2026-08-09 07:19 | 639218564408781785 |
|
3 ms | 198.41.0.4 |
| 22 | 2026-08-09 07:04 | 639218555767188482 |
|
26 ms | 198.41.0.4 |
| 21 | 2026-08-09 06:50 | 639218547142705295 |
|
- | |
| 20 | 2026-08-09 06:35 | 639218538090114532 |
|
8 ms | 198.41.0.4 |
| 19 | 2026-08-09 06:20 | 639218529257910584 |
|
12 ms | 198.41.0.4 |
| 18 | 2026-08-09 05:28 | 639218498473231858 |
|
2 ms | 198.41.0.4 |
| 17 | 2026-08-09 05:14 | 639218489802113995 |
|
3 ms | 198.41.0.4 |
| 16 | 2026-08-09 04:59 | 639218481006804516 |
|
12 ms | 198.41.0.4 |
| 15 | 2026-08-09 04:44 | 639218472048712427 |
|
2035 ms | 198.41.0.4 |
| 14 | 2026-08-09 04:30 | 639218463224432974 |
|
25 ms | 198.41.0.4 |
| 13 | 2026-08-09 04:15 | 639218454384107526 |
|
23 ms | 198.41.0.4 |
| 12 | 2026-08-09 04:00 | 639218445331231791 |
|
9 ms | 198.41.0.4 |
| 11 | 2026-08-09 03:45 | 639218436285215733 |
|
3 ms | 198.41.0.4 |
| 10 | 2026-08-09 03:30 | 639218427289555123 |
|
8 ms | 198.41.0.4 |
| 9 | 2026-08-09 03:15 | 639218418227819981 |
|
8 ms | 198.41.0.4 |
| 8 | 2026-08-09 03:00 | 639218409119503123 |
|
8 ms | 198.41.0.4 |
| 7 | 2026-08-09 02:44 | 639218399771712154 |
|
2018 ms | 198.41.0.4 |
| 6 | 2026-08-09 01:53 | 639218368648652303 |
|
4 ms | 198.41.0.4 |
| 5 | 2026-08-09 01:38 | 639218359569598460 |
|
22 ms | 198.41.0.4 |
| 4 | 2026-08-09 01:23 | 639218350555429902 |
|
26 ms | 198.41.0.4 |
| 3 | 2026-08-09 01:07 | 639218341311543299 |
|
7 ms | 198.41.0.4 |
| 2 | 2026-08-09 00:15 | 639218309981981465 |
|
3 ms | 198.41.0.4 |
| 1 | 2026-08-09 00:00 | 639218300987184335 |
|
2009 ms | 198.41.0.4 |