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 2026-08-18. For this date, NameServerHistory found 75 DNS check records, 74 successful responses, 1 failed responses, and 369 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
75
Historical checks stored for this nameserver on selected date
Average Latency
369 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-18 23:57
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
74
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.com
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 23:57 | 639226935204800669 |
|
123 ms | 198.144.183.102 |
| 74 | 2026-08-18 23:40 | 639226925298919497 |
|
3 ms | 198.144.183.102 |
| 73 | 2026-08-18 23:24 | 639226915487885053 |
|
3633 ms | 198.144.183.102 |
| 72 | 2026-08-18 23:07 | 639226905465760034 |
|
110 ms | 198.144.183.102 |
| 71 | 2026-08-18 22:50 | 639226895378104692 |
|
241 ms | 198.144.183.102 |
| 70 | 2026-08-18 21:57 | 639226863374232622 |
|
115 ms | 198.144.183.102 |
| 69 | 2026-08-18 21:41 | 639226853698516058 |
|
141 ms | 198.144.183.102 |
| 68 | 2026-08-18 21:24 | 639226843797360601 |
|
257 ms | 198.144.183.102 |
| 67 | 2026-08-18 21:08 | 639226834046588155 |
|
3635 ms | 198.144.183.102 |
| 66 | 2026-08-18 20:52 | 639226824234488533 |
|
241 ms | 198.144.183.102 |
| 65 | 2026-08-18 20:35 | 639226814549928621 |
|
5 ms | 198.144.183.102 |
| 64 | 2026-08-18 20:19 | 639226804721432353 |
|
4 ms | 198.144.183.102 |
| 63 | 2026-08-18 20:03 | 639226795048828184 |
|
111 ms | 198.144.183.102 |
| 62 | 2026-08-18 19:46 | 639226785202482420 |
|
242 ms | 198.144.183.102 |
| 61 | 2026-08-18 19:30 | 639226775309362607 |
|
262 ms | 198.144.183.102 |
| 60 | 2026-08-18 19:13 | 639226765406586155 |
|
114 ms | 198.144.183.102 |
| 59 | 2026-08-18 18:57 | 639226755437790519 |
|
295 ms | 198.144.183.102 |
| 58 | 2026-08-18 18:04 | 639226723856194457 |
|
- | |
| 57 | 2026-08-18 17:48 | 639226714050583422 |
|
250 ms | 198.144.183.102 |
| 56 | 2026-08-18 17:32 | 639226704236499724 |
|
114 ms | 198.144.183.102 |
| 55 | 2026-08-18 17:15 | 639226694184520163 |
|
141 ms | 198.144.183.102 |
| 54 | 2026-08-18 16:58 | 639226684161203477 |
|
239 ms | 198.144.183.102 |
| 53 | 2026-08-18 16:42 | 639226674305430109 |
|
118 ms | 198.144.183.102 |
| 52 | 2026-08-18 16:25 | 639226664489607984 |
|
237 ms | 198.144.183.102 |
| 51 | 2026-08-18 16:09 | 639226654533111667 |
|
255 ms | 198.144.183.102 |
| 50 | 2026-08-18 15:52 | 639226644778594725 |
|
119 ms | 198.144.183.102 |
| 49 | 2026-08-18 15:36 | 639226634901553621 |
|
259 ms | 198.144.183.102 |
| 48 | 2026-08-18 15:19 | 639226624921864967 |
|
121 ms | 198.144.183.102 |
| 47 | 2026-08-18 15:03 | 639226614939419403 |
|
252 ms | 198.144.183.102 |
| 46 | 2026-08-18 14:10 | 639226583021074771 |
|
253 ms | 198.144.183.102 |
| 45 | 2026-08-18 13:53 | 639226573279933585 |
|
245 ms | 198.144.183.102 |
| 44 | 2026-08-18 13:37 | 639226563494036301 |
|
112 ms | 198.144.183.102 |
| 43 | 2026-08-18 13:20 | 639226553708216256 |
|
115 ms | 198.144.183.102 |
| 42 | 2026-08-18 13:04 | 639226544003734815 |
|
2202 ms | 198.144.183.102 |
| 41 | 2026-08-18 12:48 | 639226534105733155 |
|
112 ms | 198.144.183.102 |
| 40 | 2026-08-18 12:31 | 639226524298118898 |
|
115 ms | 198.144.183.102 |
| 39 | 2026-08-18 12:15 | 639226514525195335 |
|
263 ms | 198.144.183.102 |
| 38 | 2026-08-18 11:59 | 639226504703635320 |
|
116 ms | 198.144.183.102 |
| 37 | 2026-08-18 11:42 | 639226494737271720 |
|
447 ms | 198.144.183.102 |
| 36 | 2026-08-18 11:26 | 639226485005027236 |
|
116 ms | 198.144.183.102 |
| 35 | 2026-08-18 11:10 | 639226475133236105 |
|
113 ms | 198.144.183.102 |
| 34 | 2026-08-18 10:16 | 639226442975077052 |
|
2120 ms | 198.144.183.102 |
| 33 | 2026-08-18 10:00 | 639226433317932039 |
|
263 ms | 198.144.183.102 |
| 32 | 2026-08-18 09:44 | 639226423688431096 |
|
239 ms | 198.144.183.102 |
| 31 | 2026-08-18 09:28 | 639226413998250045 |
|
262 ms | 198.144.183.102 |
| 30 | 2026-08-18 09:11 | 639226404284554875 |
|
115 ms | 198.144.183.102 |
| 29 | 2026-08-18 08:55 | 639226394637043309 |
|
133 ms | 198.144.183.102 |
| 28 | 2026-08-18 08:39 | 639226385052447582 |
|
133 ms | 198.144.183.102 |
| 27 | 2026-08-18 08:23 | 639226375506189603 |
|
819 ms | 198.144.183.102 |
| 26 | 2026-08-18 08:07 | 639226365690646426 |
|
9 ms | 198.144.183.102 |
| 25 | 2026-08-18 07:51 | 639226355771007701 |
|
140 ms | 198.144.183.102 |
| 24 | 2026-08-18 07:34 | 639226345946269369 |
|
257 ms | 198.144.183.102 |
| 23 | 2026-08-18 07:18 | 639226336241601848 |
|
289 ms | 198.144.183.102 |
| 22 | 2026-08-18 06:26 | 639226304950675290 |
|
246 ms | 198.144.183.102 |
| 21 | 2026-08-18 06:10 | 639226295324754616 |
|
118 ms | 198.144.183.102 |
| 20 | 2026-08-18 05:54 | 639226285824640601 |
|
3 ms | 198.144.183.102 |
| 19 | 2026-08-18 05:38 | 639226276321223917 |
|
262 ms | 198.144.183.102 |
| 18 | 2026-08-18 05:22 | 639226266800200046 |
|
10 ms | 198.144.183.102 |
| 17 | 2026-08-18 05:06 | 639226256958066164 |
|
867 ms | 198.144.183.102 |
| 16 | 2026-08-18 04:50 | 639226247432364597 |
|
2 ms | 198.144.183.102 |
| 15 | 2026-08-18 04:34 | 639226237703388552 |
|
113 ms | 198.144.183.102 |
| 14 | 2026-08-18 04:18 | 639226227937569589 |
|
110 ms | 198.144.183.102 |
| 13 | 2026-08-18 04:02 | 639226218052465471 |
|
270 ms | 198.144.183.102 |
| 12 | 2026-08-18 03:45 | 639226208429623997 |
|
274 ms | 198.144.183.102 |
| 11 | 2026-08-18 03:29 | 639226198800675295 |
|
251 ms | 198.144.183.102 |
| 10 | 2026-08-18 02:37 | 639226167722042574 |
|
130 ms | 198.144.183.102 |
| 9 | 2026-08-18 02:21 | 639226158277924383 |
|
255 ms | 198.144.183.102 |
| 8 | 2026-08-18 02:05 | 639226148757810592 |
|
257 ms | 198.144.183.102 |
| 7 | 2026-08-18 01:50 | 639226139348611045 |
|
3 ms | 198.144.183.102 |
| 6 | 2026-08-18 01:34 | 639226129823462907 |
|
3 ms | 198.144.183.102 |
| 5 | 2026-08-18 01:18 | 639226120218260005 |
|
113 ms | 198.144.183.102 |
| 4 | 2026-08-18 01:02 | 639226110875503904 |
|
259 ms | 198.144.183.102 |
| 3 | 2026-08-18 00:47 | 639226101376311912 |
|
3151 ms | 198.144.183.102 |
| 2 | 2026-08-18 00:31 | 639226091924943492 |
|
6 ms | 198.144.183.102 |
| 1 | 2026-08-18 00:15 | 639226082133158124 |
|
5 ms | 198.144.183.102 |