History for externaldns-c2.harvard.edu
Domain: harvard.edu • Tracking since 2026-08-04 23:25 UTC
DNS response history for externaldns-c2.harvard.edu
externaldns-c2.harvard.edu 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 2026-08-24. For this date, NameServerHistory found 52 DNS check records, 50 successful responses, 2 failed responses, and 21 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 externaldns-c2.harvard.edu.
Records on Selected Date
52
Historical checks stored for this nameserver on selected date
Average Latency
21 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-24 22:02
All timestamps shown in UTC
Latest Resolved IP on Selected Date
128.103.200.162
Most recently resolved hosting IP on selected date
Successful Responses
50
Checks that returned a measurable response
Failed Responses
2
Checks with no response or no returned latency
Failure Rate
4%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for externaldns-c2.harvard.edu
Showing DNS history for 2026-08-24 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 |
|---|---|---|---|---|---|
| 52 | 2026-08-24 22:02 | 639232057157944387 |
|
17 ms | 128.103.200.162 |
| 51 | 2026-08-24 21:45 | 639232046895282144 |
|
16 ms | 128.103.200.162 |
| 50 | 2026-08-24 20:51 | 639232014356623395 |
|
31 ms | 128.103.200.162 |
| 49 | 2026-08-24 20:34 | 639232004177831322 |
|
11 ms | 128.103.200.162 |
| 48 | 2026-08-24 20:17 | 639231993997863976 |
|
13 ms | 128.103.200.162 |
| 47 | 2026-08-24 20:00 | 639231983967363696 |
|
24 ms | 128.103.200.162 |
| 46 | 2026-08-24 19:07 | 639231952257842845 |
|
24 ms | 128.103.200.162 |
| 45 | 2026-08-24 18:51 | 639231942277816756 |
|
32 ms | 128.103.200.162 |
| 44 | 2026-08-24 18:34 | 639231932094180724 |
|
44 ms | 128.103.200.162 |
| 43 | 2026-08-24 18:17 | 639231922041034838 |
|
- | |
| 42 | 2026-08-24 17:24 | 639231890488117536 |
|
28 ms | 128.103.200.162 |
| 41 | 2026-08-24 17:08 | 639231880574255543 |
|
6 ms | 128.103.200.162 |
| 40 | 2026-08-24 16:51 | 639231870418029045 |
|
11 ms | 128.103.200.162 |
| 39 | 2026-08-24 16:34 | 639231860258429562 |
|
47 ms | 128.103.200.162 |
| 38 | 2026-08-24 15:41 | 639231828211839931 |
|
16 ms | 128.103.200.162 |
| 37 | 2026-08-24 15:24 | 639231818080917481 |
|
17 ms | 128.103.200.162 |
| 36 | 2026-08-24 15:07 | 639231807961539652 |
|
6 ms | 128.103.200.162 |
| 35 | 2026-08-24 14:50 | 639231797631669865 |
|
8 ms | 128.103.200.162 |
| 34 | 2026-08-24 13:57 | 639231765923559455 |
|
33 ms | 128.103.200.162 |
| 33 | 2026-08-24 13:40 | 639231755868832964 |
|
20 ms | 128.103.200.162 |
| 32 | 2026-08-24 13:23 | 639231745628278877 |
|
18 ms | 128.103.200.162 |
| 31 | 2026-08-24 13:06 | 639231735407682062 |
|
19 ms | 128.103.200.162 |
| 30 | 2026-08-24 12:13 | 639231703815441688 |
|
20 ms | 128.103.200.162 |
| 29 | 2026-08-24 11:57 | 639231693747052549 |
|
3 ms | 128.103.200.162 |
| 28 | 2026-08-24 11:40 | 639231683712487276 |
|
43 ms | 128.103.200.162 |
| 27 | 2026-08-24 11:23 | 639231673513573868 |
|
22 ms | 128.103.200.162 |
| 26 | 2026-08-24 10:30 | 639231641791249939 |
|
16 ms | 128.103.200.162 |
| 25 | 2026-08-24 10:13 | 639231631866211033 |
|
22 ms | 128.103.200.162 |
| 24 | 2026-08-24 09:56 | 639231621644955316 |
|
49 ms | 128.103.200.162 |
| 23 | 2026-08-24 09:39 | 639231611478799259 |
|
11 ms | 128.103.200.162 |
| 22 | 2026-08-24 08:47 | 639231579923718211 |
|
48 ms | 128.103.200.162 |
| 21 | 2026-08-24 08:30 | 639231569810702936 |
|
21 ms | 128.103.200.162 |
| 20 | 2026-08-24 08:13 | 639231559762411619 |
|
28 ms | 128.103.200.162 |
| 19 | 2026-08-24 07:56 | 639231549663595407 |
|
7 ms | 128.103.200.162 |
| 18 | 2026-08-24 07:04 | 639231518076817246 |
|
15 ms | 128.103.200.162 |
| 17 | 2026-08-24 06:47 | 639231508078650885 |
|
5 ms | 128.103.200.162 |
| 16 | 2026-08-24 06:31 | 639231498210697093 |
|
19 ms | 128.103.200.162 |
| 15 | 2026-08-24 06:14 | 639231488109699360 |
|
24 ms | 128.103.200.162 |
| 14 | 2026-08-24 05:22 | 639231456772510692 |
|
16 ms | 128.103.200.162 |
| 13 | 2026-08-24 05:05 | 639231447084631185 |
|
19 ms | 128.103.200.162 |
| 12 | 2026-08-24 04:49 | 639231437208519473 |
|
13 ms | 128.103.200.162 |
| 11 | 2026-08-24 04:32 | 639231427209627490 |
|
11 ms | 128.103.200.162 |
| 10 | 2026-08-24 03:40 | 639231395791246644 |
|
29 ms | 128.103.200.162 |
| 9 | 2026-08-24 03:24 | 639231386075551458 |
|
25 ms | 128.103.200.162 |
| 8 | 2026-08-24 03:07 | 639231376208713791 |
|
27 ms | 128.103.200.162 |
| 7 | 2026-08-24 02:51 | 639231366170589276 |
|
8 ms | 128.103.200.162 |
| 6 | 2026-08-24 01:58 | 639231334732159368 |
|
29 ms | 128.103.200.162 |
| 5 | 2026-08-24 01:42 | 639231325035670078 |
|
12 ms | 128.103.200.162 |
| 4 | 2026-08-24 01:25 | 639231315132253837 |
|
19 ms | 128.103.200.162 |
| 3 | 2026-08-24 01:09 | 639231305014280808 |
|
3 ms | 128.103.200.162 |
| 2 | 2026-08-24 00:17 | 639231273779380675 |
|
22 ms | 128.103.200.162 |
| 1 | 2026-08-24 00:01 | 639231264180839154 |
|
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