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 2026-08-15. For this date, NameServerHistory found 76 DNS check records, 76 successful responses, 0 failed responses, and 201 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
76
Historical checks stored for this nameserver on selected date
Average Latency
201 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-15 23:53
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
76
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 2026-08-15 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 |
|---|---|---|---|---|---|
| 76 | 2026-08-15 23:53 | 639224347685767174 |
|
57 ms | 198.41.0.4 |
| 75 | 2026-08-15 23:37 | 639224338276675277 |
|
9 ms | 198.41.0.4 |
| 74 | 2026-08-15 22:44 | 639224306594546649 |
|
3 ms | 198.41.0.4 |
| 73 | 2026-08-15 22:28 | 639224297145423303 |
|
35 ms | 198.41.0.4 |
| 72 | 2026-08-15 22:13 | 639224287678238833 |
|
8 ms | 198.41.0.4 |
| 71 | 2026-08-15 21:57 | 639224278490872828 |
|
7 ms | 198.41.0.4 |
| 70 | 2026-08-15 21:42 | 639224269149307826 |
|
15 ms | 198.41.0.4 |
| 69 | 2026-08-15 21:26 | 639224259868597616 |
|
27 ms | 198.41.0.4 |
| 68 | 2026-08-15 21:11 | 639224250518642175 |
|
12 ms | 198.41.0.4 |
| 67 | 2026-08-15 20:55 | 639224241064772383 |
|
12 ms | 198.41.0.4 |
| 66 | 2026-08-15 20:39 | 639224231691099605 |
|
2 ms | 198.41.0.4 |
| 65 | 2026-08-15 20:24 | 639224222468168159 |
|
35 ms | 198.41.0.4 |
| 64 | 2026-08-15 20:08 | 639224213173899635 |
|
3 ms | 198.41.0.4 |
| 63 | 2026-08-15 19:53 | 639224203914451783 |
|
20 ms | 198.41.0.4 |
| 62 | 2026-08-15 19:00 | 639224172202542163 |
|
3 ms | 198.41.0.4 |
| 61 | 2026-08-15 18:45 | 639224163338654093 |
|
27 ms | 198.41.0.4 |
| 60 | 2026-08-15 18:30 | 639224154287995374 |
|
8 ms | 198.41.0.4 |
| 59 | 2026-08-15 18:15 | 639224145118612503 |
|
3 ms | 198.41.0.4 |
| 58 | 2026-08-15 18:00 | 639224135995990731 |
|
2011 ms | 198.41.0.4 |
| 57 | 2026-08-15 17:45 | 639224127185332624 |
|
12 ms | 198.41.0.4 |
| 56 | 2026-08-15 17:30 | 639224118229289175 |
|
3 ms | 198.41.0.4 |
| 55 | 2026-08-15 17:15 | 639224109273796359 |
|
8 ms | 198.41.0.4 |
| 54 | 2026-08-15 17:01 | 639224100490805608 |
|
16 ms | 198.41.0.4 |
| 53 | 2026-08-15 16:45 | 639224091353714490 |
|
2011 ms | 198.41.0.4 |
| 52 | 2026-08-15 16:30 | 639224082033126828 |
|
14 ms | 198.41.0.4 |
| 51 | 2026-08-15 16:14 | 639224072736962403 |
|
20 ms | 198.41.0.4 |
| 50 | 2026-08-15 15:22 | 639224041475563754 |
|
9 ms | 198.41.0.4 |
| 49 | 2026-08-15 15:07 | 639224032345604453 |
|
9 ms | 198.41.0.4 |
| 48 | 2026-08-15 14:52 | 639224023169497283 |
|
31 ms | 198.41.0.4 |
| 47 | 2026-08-15 14:36 | 639224013981146405 |
|
34 ms | 198.41.0.4 |
| 46 | 2026-08-15 14:21 | 639224004883412586 |
|
7 ms | 198.41.0.4 |
| 45 | 2026-08-15 14:06 | 639223995612880615 |
|
2 ms | 198.41.0.4 |
| 44 | 2026-08-15 13:50 | 639223986271830789 |
|
3 ms | 198.41.0.4 |
| 43 | 2026-08-15 13:35 | 639223977005780949 |
|
8 ms | 198.41.0.4 |
| 42 | 2026-08-15 13:19 | 639223967653137793 |
|
8 ms | 198.41.0.4 |
| 41 | 2026-08-15 13:04 | 639223958286010799 |
|
29 ms | 198.41.0.4 |
| 40 | 2026-08-15 12:48 | 639223948936108345 |
|
2015 ms | 198.41.0.4 |
| 39 | 2026-08-15 12:33 | 639223939673066880 |
|
2030 ms | 198.41.0.4 |
| 38 | 2026-08-15 11:40 | 639223908317760530 |
|
12 ms | 198.41.0.4 |
| 37 | 2026-08-15 11:25 | 639223898992594258 |
|
8 ms | 198.41.0.4 |
| 36 | 2026-08-15 11:09 | 639223889761312823 |
|
30 ms | 198.41.0.4 |
| 35 | 2026-08-15 10:54 | 639223880359273507 |
|
57 ms | 198.41.0.4 |
| 34 | 2026-08-15 10:38 | 639223870920466808 |
|
8 ms | 198.41.0.4 |
| 33 | 2026-08-15 10:22 | 639223861579762179 |
|
15 ms | 198.41.0.4 |
| 32 | 2026-08-15 10:07 | 639223852238616009 |
|
54 ms | 198.41.0.4 |
| 31 | 2026-08-15 09:51 | 639223843019815620 |
|
27 ms | 198.41.0.4 |
| 30 | 2026-08-15 09:36 | 639223833669915012 |
|
3 ms | 198.41.0.4 |
| 29 | 2026-08-15 09:21 | 639223824494613222 |
|
2016 ms | 198.41.0.4 |
| 28 | 2026-08-15 09:05 | 639223815116325293 |
|
11 ms | 198.41.0.4 |
| 27 | 2026-08-15 08:49 | 639223805493870221 |
|
3 ms | 198.41.0.4 |
| 26 | 2026-08-15 07:57 | 639223774218660438 |
|
2 ms | 198.41.0.4 |
| 25 | 2026-08-15 07:41 | 639223764663090372 |
|
16 ms | 198.41.0.4 |
| 24 | 2026-08-15 07:25 | 639223755338811400 |
|
8 ms | 198.41.0.4 |
| 23 | 2026-08-15 07:10 | 639223746019193268 |
|
63 ms | 198.41.0.4 |
| 22 | 2026-08-15 06:54 | 639223736658778104 |
|
7 ms | 198.41.0.4 |
| 21 | 2026-08-15 06:39 | 639223727330194499 |
|
19 ms | 198.41.0.4 |
| 20 | 2026-08-15 06:23 | 639223717848514742 |
|
5 ms | 198.41.0.4 |
| 19 | 2026-08-15 06:07 | 639223708284754056 |
|
11 ms | 198.41.0.4 |
| 18 | 2026-08-15 05:52 | 639223699061259933 |
|
42 ms | 198.41.0.4 |
| 17 | 2026-08-15 05:36 | 639223689592545140 |
|
24 ms | 198.41.0.4 |
| 16 | 2026-08-15 05:20 | 639223680143410810 |
|
28 ms | 198.41.0.4 |
| 15 | 2026-08-15 05:04 | 639223670514517104 |
|
9 ms | 198.41.0.4 |
| 14 | 2026-08-15 04:11 | 639223638855054294 |
|
3 ms | 198.41.0.4 |
| 13 | 2026-08-15 03:56 | 639223629623335972 |
|
4083 ms | 198.41.0.4 |
| 12 | 2026-08-15 03:40 | 639223620390189495 |
|
5 ms | 198.41.0.4 |
| 11 | 2026-08-15 03:25 | 639223610916950440 |
|
24 ms | 198.41.0.4 |
| 10 | 2026-08-15 03:09 | 639223601597759168 |
|
2 ms | 198.41.0.4 |
| 9 | 2026-08-15 02:54 | 639223592342172093 |
|
6 ms | 198.41.0.4 |
| 8 | 2026-08-15 02:39 | 639223583324121497 |
|
2 ms | 198.41.0.4 |
| 7 | 2026-08-15 02:23 | 639223574086714218 |
|
3 ms | 198.41.0.4 |
| 6 | 2026-08-15 02:08 | 639223564698424889 |
|
3 ms | 198.41.0.4 |
| 5 | 2026-08-15 01:52 | 639223555408664206 |
|
2 ms | 198.41.0.4 |
| 4 | 2026-08-15 01:36 | 639223546000912416 |
|
47 ms | 198.41.0.4 |
| 3 | 2026-08-15 01:21 | 639223536550774847 |
|
38 ms | 198.41.0.4 |
| 2 | 2026-08-15 00:28 | 639223505017205611 |
|
3 ms | 198.41.0.4 |
| 1 | 2026-08-15 00:13 | 639223495784410207 |
|
4 ms | 198.41.0.4 |