History for a.root--servers.com
Domain: root--servers.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for a.root--servers.com
a.root--servers.com 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 2026-08-20. For this date, NameServerHistory found 57 DNS check records, 57 successful responses, 0 failed responses, and 418 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.com.
Records on Selected Date
57
Historical checks stored for this nameserver on selected date
Average Latency
418 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-20 23:17
All timestamps shown in UTC
Latest Resolved IP on Selected Date
198.144.183.102
Most recently resolved hosting IP on selected date
Successful Responses
57
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.com
Showing DNS history for 2026-08-20 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 |
|---|---|---|---|---|---|
| 57 | 2026-08-20 23:17 | 639228639850033448 |
|
3620 ms | 198.144.183.102 |
| 56 | 2026-08-20 23:01 | 639228630204271870 |
|
134 ms | 198.144.183.102 |
| 55 | 2026-08-20 22:45 | 639228620295091135 |
|
112 ms | 198.144.183.102 |
| 54 | 2026-08-20 22:29 | 639228610298336915 |
|
3 ms | 198.144.183.102 |
| 53 | 2026-08-20 21:36 | 639228578917047616 |
|
111 ms | 198.144.183.102 |
| 52 | 2026-08-20 21:20 | 639228569046445709 |
|
251 ms | 198.144.183.102 |
| 51 | 2026-08-20 21:03 | 639228558946830986 |
|
259 ms | 198.144.183.102 |
| 50 | 2026-08-20 20:46 | 639228548977359217 |
|
241 ms | 198.144.183.102 |
| 49 | 2026-08-20 19:54 | 639228517494157668 |
|
2127 ms | 198.144.183.102 |
| 48 | 2026-08-20 19:37 | 639228507374116892 |
|
254 ms | 198.144.183.102 |
| 47 | 2026-08-20 19:20 | 639228497315154893 |
|
111 ms | 198.144.183.102 |
| 46 | 2026-08-20 19:03 | 639228487287648341 |
|
255 ms | 198.144.183.102 |
| 45 | 2026-08-20 18:11 | 639228455828123788 |
|
251 ms | 198.144.183.102 |
| 44 | 2026-08-20 17:55 | 639228445900082244 |
|
117 ms | 198.144.183.102 |
| 43 | 2026-08-20 17:38 | 639228435866352323 |
|
257 ms | 198.144.183.102 |
| 42 | 2026-08-20 17:21 | 639228425802273151 |
|
254 ms | 198.144.183.102 |
| 41 | 2026-08-20 16:28 | 639228393616324230 |
|
1722 ms | 198.144.183.102 |
| 40 | 2026-08-20 16:11 | 639228383590408693 |
|
2120 ms | 198.144.183.102 |
| 39 | 2026-08-20 15:54 | 639228373471467474 |
|
115 ms | 198.144.183.102 |
| 38 | 2026-08-20 15:37 | 639228363426647311 |
|
250 ms | 198.144.183.102 |
| 37 | 2026-08-20 14:44 | 639228331681701910 |
|
5 ms | 198.144.183.102 |
| 36 | 2026-08-20 14:27 | 639228321714746824 |
|
2 ms | 198.144.183.102 |
| 35 | 2026-08-20 14:11 | 639228311652090262 |
|
700 ms | 198.144.183.102 |
| 34 | 2026-08-20 13:54 | 639228301670088587 |
|
243 ms | 198.144.183.102 |
| 33 | 2026-08-20 13:01 | 639228269987976710 |
|
125 ms | 198.144.183.102 |
| 32 | 2026-08-20 12:45 | 639228260009452308 |
|
257 ms | 198.144.183.102 |
| 31 | 2026-08-20 12:28 | 639228249661740894 |
|
241 ms | 198.144.183.102 |
| 30 | 2026-08-20 12:11 | 639228239552680346 |
|
109 ms | 198.144.183.102 |
| 29 | 2026-08-20 11:17 | 639228207667580819 |
|
840 ms | 198.144.183.102 |
| 28 | 2026-08-20 11:01 | 639228197494011560 |
|
263 ms | 198.144.183.102 |
| 27 | 2026-08-20 10:44 | 639228187497039939 |
|
119 ms | 198.144.183.102 |
| 26 | 2026-08-20 10:27 | 639228177408432646 |
|
260 ms | 198.144.183.102 |
| 25 | 2026-08-20 09:35 | 639228146356166262 |
|
109 ms | 198.144.183.102 |
| 24 | 2026-08-20 09:19 | 639228136541505712 |
|
6 ms | 198.144.183.102 |
| 23 | 2026-08-20 09:02 | 639228126519136598 |
|
5 ms | 198.144.183.102 |
| 22 | 2026-08-20 08:45 | 639228116537148885 |
|
111 ms | 198.144.183.102 |
| 21 | 2026-08-20 07:53 | 639228085320764351 |
|
259 ms | 198.144.183.102 |
| 20 | 2026-08-20 07:37 | 639228075444604839 |
|
2 ms | 198.144.183.102 |
| 19 | 2026-08-20 07:21 | 639228065615498985 |
|
260 ms | 198.144.183.102 |
| 18 | 2026-08-20 07:04 | 639228055675321422 |
|
245 ms | 198.144.183.102 |
| 17 | 2026-08-20 06:12 | 639228024230839396 |
|
840 ms | 198.144.183.102 |
| 16 | 2026-08-20 05:55 | 639228014720406505 |
|
127 ms | 198.144.183.102 |
| 15 | 2026-08-20 05:39 | 639228004930827030 |
|
143 ms | 198.144.183.102 |
| 14 | 2026-08-20 05:23 | 639227995103340154 |
|
238 ms | 198.144.183.102 |
| 13 | 2026-08-20 04:31 | 639227963811374894 |
|
3 ms | 198.144.183.102 |
| 12 | 2026-08-20 04:15 | 639227954132571365 |
|
255 ms | 198.144.183.102 |
| 11 | 2026-08-20 03:59 | 639227944541208342 |
|
258 ms | 198.144.183.102 |
| 10 | 2026-08-20 03:42 | 639227934657213484 |
|
112 ms | 198.144.183.102 |
| 9 | 2026-08-20 02:50 | 639227903628145469 |
|
120 ms | 198.144.183.102 |
| 8 | 2026-08-20 02:34 | 639227893995483475 |
|
130 ms | 198.144.183.102 |
| 7 | 2026-08-20 02:18 | 639227884280244209 |
|
3 ms | 198.144.183.102 |
| 6 | 2026-08-20 02:02 | 639227874371147132 |
|
260 ms | 198.144.183.102 |
| 5 | 2026-08-20 01:10 | 639227843224256432 |
|
142 ms | 198.144.183.102 |
| 4 | 2026-08-20 00:54 | 639227833720403506 |
|
6 ms | 198.144.183.102 |
| 3 | 2026-08-20 00:38 | 639227824170728278 |
|
112 ms | 198.144.183.102 |
| 2 | 2026-08-20 00:22 | 639227814865867570 |
|
4260 ms | 198.144.183.102 |
| 1 | 2026-08-20 00:07 | 639227805445376839 |
|
111 ms | 198.144.183.102 |