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 2026-08-18. For this date, NameServerHistory found 75 DNS check records, 75 successful responses, 0 failed responses, and 242 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
75
Historical checks stored for this nameserver on selected date
Average Latency
242 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-18 23:45
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
75
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 2026-08-18 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 |
|---|---|---|---|---|---|
| 75 | 2026-08-18 23:45 | 639226935204800669 |
|
2016 ms | 198.41.0.4 |
| 74 | 2026-08-18 23:28 | 639226925298919497 |
|
56 ms | 198.41.0.4 |
| 73 | 2026-08-18 23:12 | 639226915487885053 |
|
7 ms | 198.41.0.4 |
| 72 | 2026-08-18 22:55 | 639226905465760034 |
|
3 ms | 198.41.0.4 |
| 71 | 2026-08-18 22:39 | 639226895378104692 |
|
44 ms | 198.41.0.4 |
| 70 | 2026-08-18 21:45 | 639226863374232622 |
|
7 ms | 198.41.0.4 |
| 69 | 2026-08-18 21:29 | 639226853698516058 |
|
3 ms | 198.41.0.4 |
| 68 | 2026-08-18 21:13 | 639226843797360601 |
|
28 ms | 198.41.0.4 |
| 67 | 2026-08-18 20:56 | 639226834046588155 |
|
7 ms | 198.41.0.4 |
| 66 | 2026-08-18 20:40 | 639226824234488533 |
|
26 ms | 198.41.0.4 |
| 65 | 2026-08-18 20:24 | 639226814549928621 |
|
2014 ms | 198.41.0.4 |
| 64 | 2026-08-18 20:07 | 639226804721432353 |
|
9 ms | 198.41.0.4 |
| 63 | 2026-08-18 19:51 | 639226795048828184 |
|
2008 ms | 198.41.0.4 |
| 62 | 2026-08-18 19:35 | 639226785202482420 |
|
3 ms | 198.41.0.4 |
| 61 | 2026-08-18 19:18 | 639226775309362607 |
|
14 ms | 198.41.0.4 |
| 60 | 2026-08-18 19:02 | 639226765406586155 |
|
131 ms | 198.41.0.4 |
| 59 | 2026-08-18 18:45 | 639226755437790519 |
|
123 ms | 198.41.0.4 |
| 58 | 2026-08-18 17:53 | 639226723856194457 |
|
9 ms | 198.41.0.4 |
| 57 | 2026-08-18 17:36 | 639226714050583422 |
|
3 ms | 198.41.0.4 |
| 56 | 2026-08-18 17:20 | 639226704236499724 |
|
5 ms | 198.41.0.4 |
| 55 | 2026-08-18 17:03 | 639226694184520163 |
|
50 ms | 198.41.0.4 |
| 54 | 2026-08-18 16:47 | 639226684161203477 |
|
8 ms | 198.41.0.4 |
| 53 | 2026-08-18 16:30 | 639226674305430109 |
|
45 ms | 198.41.0.4 |
| 52 | 2026-08-18 16:14 | 639226664489607984 |
|
7 ms | 198.41.0.4 |
| 51 | 2026-08-18 15:57 | 639226654533111667 |
|
2009 ms | 198.41.0.4 |
| 50 | 2026-08-18 15:41 | 639226644778594725 |
|
38 ms | 198.41.0.4 |
| 49 | 2026-08-18 15:25 | 639226634901553621 |
|
4 ms | 198.41.0.4 |
| 48 | 2026-08-18 15:08 | 639226624921864967 |
|
2023 ms | 198.41.0.4 |
| 47 | 2026-08-18 14:51 | 639226614939419403 |
|
17 ms | 198.41.0.4 |
| 46 | 2026-08-18 13:58 | 639226583021074771 |
|
58 ms | 198.41.0.4 |
| 45 | 2026-08-18 13:42 | 639226573279933585 |
|
19 ms | 198.41.0.4 |
| 44 | 2026-08-18 13:25 | 639226563494036301 |
|
2010 ms | 198.41.0.4 |
| 43 | 2026-08-18 13:09 | 639226553708216256 |
|
43 ms | 198.41.0.4 |
| 42 | 2026-08-18 12:53 | 639226544003734815 |
|
11 ms | 198.41.0.4 |
| 41 | 2026-08-18 12:36 | 639226534105733155 |
|
40 ms | 198.41.0.4 |
| 40 | 2026-08-18 12:20 | 639226524298118898 |
|
17 ms | 198.41.0.4 |
| 39 | 2026-08-18 12:04 | 639226514525195335 |
|
3 ms | 198.41.0.4 |
| 38 | 2026-08-18 11:48 | 639226504703635320 |
|
2 ms | 198.41.0.4 |
| 37 | 2026-08-18 11:31 | 639226494737271720 |
|
24 ms | 198.41.0.4 |
| 36 | 2026-08-18 11:15 | 639226485005027236 |
|
29 ms | 198.41.0.4 |
| 35 | 2026-08-18 10:58 | 639226475133236105 |
|
98 ms | 198.41.0.4 |
| 34 | 2026-08-18 10:05 | 639226442975077052 |
|
507 ms | 198.41.0.4 |
| 33 | 2026-08-18 09:48 | 639226433317932039 |
|
43 ms | 198.41.0.4 |
| 32 | 2026-08-18 09:32 | 639226423688431096 |
|
32 ms | 198.41.0.4 |
| 31 | 2026-08-18 09:16 | 639226413998250045 |
|
8 ms | 198.41.0.4 |
| 30 | 2026-08-18 09:00 | 639226404284554875 |
|
8 ms | 198.41.0.4 |
| 29 | 2026-08-18 08:44 | 639226394637043309 |
|
10 ms | 198.41.0.4 |
| 28 | 2026-08-18 08:28 | 639226385052447582 |
|
3 ms | 198.41.0.4 |
| 27 | 2026-08-18 08:12 | 639226375506189603 |
|
3 ms | 198.41.0.4 |
| 26 | 2026-08-18 07:56 | 639226365690646426 |
|
3 ms | 198.41.0.4 |
| 25 | 2026-08-18 07:39 | 639226355771007701 |
|
12 ms | 198.41.0.4 |
| 24 | 2026-08-18 07:23 | 639226345946269369 |
|
10 ms | 198.41.0.4 |
| 23 | 2026-08-18 07:07 | 639226336241601848 |
|
2037 ms | 198.41.0.4 |
| 22 | 2026-08-18 06:15 | 639226304950675290 |
|
52 ms | 198.41.0.4 |
| 21 | 2026-08-18 05:59 | 639226295324754616 |
|
9 ms | 198.41.0.4 |
| 20 | 2026-08-18 05:43 | 639226285824640601 |
|
25 ms | 198.41.0.4 |
| 19 | 2026-08-18 05:27 | 639226276321223917 |
|
3 ms | 198.41.0.4 |
| 18 | 2026-08-18 05:11 | 639226266800200046 |
|
14 ms | 198.41.0.4 |
| 17 | 2026-08-18 04:55 | 639226256958066164 |
|
28 ms | 198.41.0.4 |
| 16 | 2026-08-18 04:39 | 639226247432364597 |
|
7 ms | 198.41.0.4 |
| 15 | 2026-08-18 04:22 | 639226237703388552 |
|
20 ms | 198.41.0.4 |
| 14 | 2026-08-18 04:06 | 639226227937569589 |
|
2021 ms | 198.41.0.4 |
| 13 | 2026-08-18 03:50 | 639226218052465471 |
|
44 ms | 198.41.0.4 |
| 12 | 2026-08-18 03:34 | 639226208429623997 |
|
10 ms | 198.41.0.4 |
| 11 | 2026-08-18 03:18 | 639226198800675295 |
|
17 ms | 198.41.0.4 |
| 10 | 2026-08-18 02:26 | 639226167722042574 |
|
9 ms | 198.41.0.4 |
| 9 | 2026-08-18 02:10 | 639226158277924383 |
|
7 ms | 198.41.0.4 |
| 8 | 2026-08-18 01:54 | 639226148757810592 |
|
23 ms | 198.41.0.4 |
| 7 | 2026-08-18 01:39 | 639226139348611045 |
|
10 ms | 198.41.0.4 |
| 6 | 2026-08-18 01:23 | 639226129823462907 |
|
8 ms | 198.41.0.4 |
| 5 | 2026-08-18 01:07 | 639226120218260005 |
|
2 ms | 198.41.0.4 |
| 4 | 2026-08-18 00:51 | 639226110875503904 |
|
13 ms | 198.41.0.4 |
| 3 | 2026-08-18 00:35 | 639226101376311912 |
|
15 ms | 198.41.0.4 |
| 2 | 2026-08-18 00:20 | 639226091924943492 |
|
42 ms | 198.41.0.4 |
| 1 | 2026-08-18 00:03 | 639226082133158124 |
|
4 ms | 198.41.0.4 |