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 2026-08-11. For this date, NameServerHistory found 74 DNS check records, 74 successful responses, 0 failed responses, and 261 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
74
Historical checks stored for this nameserver on selected date
Average Latency
261 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-11 22:42
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
74
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 2026-08-11 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 |
|---|---|---|---|---|---|
| 74 | 2026-08-11 22:42 | 639220847369072314 |
|
3 ms | 198.41.0.4 |
| 73 | 2026-08-11 22:27 | 639220838037764925 |
|
2 ms | 198.41.0.4 |
| 72 | 2026-08-11 22:11 | 639220828735120634 |
|
24 ms | 198.41.0.4 |
| 71 | 2026-08-11 21:56 | 639220819447979766 |
|
2015 ms | 198.41.0.4 |
| 70 | 2026-08-11 21:40 | 639220810056531741 |
|
2 ms | 198.41.0.4 |
| 69 | 2026-08-11 21:25 | 639220800745746593 |
|
6 ms | 198.41.0.4 |
| 68 | 2026-08-11 21:09 | 639220791351626349 |
|
3 ms | 198.41.0.4 |
| 67 | 2026-08-11 20:53 | 639220782021256610 |
|
2 ms | 198.41.0.4 |
| 66 | 2026-08-11 20:38 | 639220772603347755 |
|
13 ms | 198.41.0.4 |
| 65 | 2026-08-11 20:22 | 639220763224057047 |
|
4 ms | 198.41.0.4 |
| 64 | 2026-08-11 20:06 | 639220753691117767 |
|
10 ms | 198.41.0.4 |
| 63 | 2026-08-11 19:50 | 639220744107836218 |
|
3 ms | 198.41.0.4 |
| 62 | 2026-08-11 18:57 | 639220711927629898 |
|
3 ms | 198.41.0.4 |
| 61 | 2026-08-11 18:41 | 639220702299437921 |
|
3 ms | 198.41.0.4 |
| 60 | 2026-08-11 18:25 | 639220692505468181 |
|
3 ms | 198.41.0.4 |
| 59 | 2026-08-11 18:08 | 639220682669911239 |
|
3 ms | 198.41.0.4 |
| 58 | 2026-08-11 17:52 | 639220672929841526 |
|
5 ms | 198.41.0.4 |
| 57 | 2026-08-11 17:36 | 639220663225662315 |
|
3 ms | 198.41.0.4 |
| 56 | 2026-08-11 17:20 | 639220653846255684 |
|
3 ms | 198.41.0.4 |
| 55 | 2026-08-11 17:05 | 639220644420909059 |
|
6 ms | 198.41.0.4 |
| 54 | 2026-08-11 16:49 | 639220635074970435 |
|
6 ms | 198.41.0.4 |
| 53 | 2026-08-11 16:34 | 639220625614385966 |
|
7 ms | 198.41.0.4 |
| 52 | 2026-08-11 16:18 | 639220616132212636 |
|
8 ms | 198.41.0.4 |
| 51 | 2026-08-11 16:02 | 639220606533651662 |
|
9 ms | 198.41.0.4 |
| 50 | 2026-08-11 15:08 | 639220574514514318 |
|
10 ms | 198.41.0.4 |
| 49 | 2026-08-11 14:52 | 639220565124823874 |
|
2018 ms | 198.41.0.4 |
| 48 | 2026-08-11 14:36 | 639220555799311478 |
|
10 ms | 198.41.0.4 |
| 47 | 2026-08-11 14:21 | 639220546481577614 |
|
64 ms | 198.41.0.4 |
| 46 | 2026-08-11 14:05 | 639220537036533154 |
|
29 ms | 198.41.0.4 |
| 45 | 2026-08-11 13:49 | 639220527719177174 |
|
24 ms | 198.41.0.4 |
| 44 | 2026-08-11 13:34 | 639220518173088308 |
|
2013 ms | 198.41.0.4 |
| 43 | 2026-08-11 13:18 | 639220508902896243 |
|
2046 ms | 198.41.0.4 |
| 42 | 2026-08-11 13:03 | 639220499455923005 |
|
2 ms | 198.41.0.4 |
| 41 | 2026-08-11 12:47 | 639220490082583768 |
|
2 ms | 198.41.0.4 |
| 40 | 2026-08-11 12:31 | 639220480636590998 |
|
22 ms | 198.41.0.4 |
| 39 | 2026-08-11 12:13 | 639220469585029273 |
|
28 ms | 198.41.0.4 |
| 38 | 2026-08-11 11:21 | 639220438074188884 |
|
16 ms | 198.41.0.4 |
| 37 | 2026-08-11 11:05 | 639220428789720049 |
|
2026 ms | 198.41.0.4 |
| 36 | 2026-08-11 10:50 | 639220419558302820 |
|
17 ms | 198.41.0.4 |
| 35 | 2026-08-11 10:35 | 639220410448738795 |
|
19 ms | 198.41.0.4 |
| 34 | 2026-08-11 10:19 | 639220401034081530 |
|
40 ms | 198.41.0.4 |
| 33 | 2026-08-11 10:03 | 639220391766674161 |
|
27 ms | 198.41.0.4 |
| 32 | 2026-08-11 09:48 | 639220382275807148 |
|
8 ms | 198.41.0.4 |
| 31 | 2026-08-11 09:32 | 639220373034162867 |
|
50 ms | 198.41.0.4 |
| 30 | 2026-08-11 09:17 | 639220363994971859 |
|
8 ms | 198.41.0.4 |
| 29 | 2026-08-11 09:01 | 639220354563965455 |
|
3 ms | 198.41.0.4 |
| 28 | 2026-08-11 08:46 | 639220345437414880 |
|
10 ms | 198.41.0.4 |
| 27 | 2026-08-11 08:31 | 639220336024248987 |
|
19 ms | 198.41.0.4 |
| 26 | 2026-08-11 07:37 | 639220304233635692 |
|
10 ms | 198.41.0.4 |
| 25 | 2026-08-11 07:22 | 639220294872170960 |
|
19 ms | 198.41.0.4 |
| 24 | 2026-08-11 07:06 | 639220285547177980 |
|
2020 ms | 198.41.0.4 |
| 23 | 2026-08-11 06:51 | 639220276337941315 |
|
7 ms | 198.41.0.4 |
| 22 | 2026-08-11 06:36 | 639220267175191677 |
|
2032 ms | 198.41.0.4 |
| 21 | 2026-08-11 06:20 | 639220257981518924 |
|
23 ms | 198.41.0.4 |
| 20 | 2026-08-11 06:06 | 639220249265489070 |
|
2 ms | 198.41.0.4 |
| 19 | 2026-08-11 05:51 | 639220240700249205 |
|
67 ms | 198.41.0.4 |
| 18 | 2026-08-11 05:37 | 639220231975029986 |
|
31 ms | 198.41.0.4 |
| 17 | 2026-08-11 05:22 | 639220223261176932 |
|
40 ms | 198.41.0.4 |
| 16 | 2026-08-11 05:08 | 639220214366718456 |
|
32 ms | 198.41.0.4 |
| 15 | 2026-08-11 04:52 | 639220205306334524 |
|
4 ms | 198.41.0.4 |
| 14 | 2026-08-11 04:01 | 639220174463175061 |
|
9 ms | 198.41.0.4 |
| 13 | 2026-08-11 03:47 | 639220165777190438 |
|
48 ms | 198.41.0.4 |
| 12 | 2026-08-11 03:32 | 639220156880374825 |
|
11 ms | 198.41.0.4 |
| 11 | 2026-08-11 03:17 | 639220148139986945 |
|
2037 ms | 198.41.0.4 |
| 10 | 2026-08-11 03:03 | 639220139271074299 |
|
2 ms | 198.41.0.4 |
| 9 | 2026-08-11 02:48 | 639220130565901336 |
|
36 ms | 198.41.0.4 |
| 8 | 2026-08-11 02:33 | 639220121659980575 |
|
24 ms | 198.41.0.4 |
| 7 | 2026-08-11 02:19 | 639220112857650894 |
|
13 ms | 198.41.0.4 |
| 6 | 2026-08-11 02:04 | 639220103767686219 |
|
6 ms | 198.41.0.4 |
| 5 | 2026-08-11 01:48 | 639220094545970611 |
|
43 ms | 198.41.0.4 |
| 4 | 2026-08-11 01:33 | 639220085476091081 |
|
10 ms | 198.41.0.4 |
| 3 | 2026-08-11 01:18 | 639220076243751161 |
|
49 ms | 198.41.0.4 |
| 2 | 2026-08-11 00:27 | 639220045322845190 |
|
2038 ms | 198.41.0.4 |
| 1 | 2026-08-11 00:12 | 639220036434132314 |
|
8 ms | 198.41.0.4 |