History for ns1.51cdn.com
Domain: 51cdn.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for ns1.51cdn.com
ns1.51cdn.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 2026-08-26. For this date, NameServerHistory found 64 DNS check records, 64 successful responses, 0 failed responses, and 594 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 ns1.51cdn.com.
Records on Selected Date
64
Historical checks stored for this nameserver on selected date
Average Latency
594 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-26 10:11
All timestamps shown in UTC
Latest Resolved IP on Selected Date
121.14.228.169
Most recently resolved hosting IP on selected date
Successful Responses
64
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 ns1.51cdn.com
Showing DNS history for 2026-08-26 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 |
|---|---|---|---|---|---|
| 64 | 2026-08-26 10:11 | 639233350067824371 |
|
512 ms | 121.14.228.169 |
| 63 | 2026-08-26 10:11 | 639233350067824371 |
|
512 ms | 61.129.75.225 |
| 62 | 2026-08-26 09:54 | 639233339545274518 |
|
506 ms | 121.14.228.169 |
| 61 | 2026-08-26 09:54 | 639233339545274518 |
|
506 ms | 61.129.75.225 |
| 60 | 2026-08-26 09:36 | 639233329214918079 |
|
528 ms | 121.14.228.169 |
| 59 | 2026-08-26 09:36 | 639233329214918079 |
|
528 ms | 61.129.75.225 |
| 58 | 2026-08-26 09:19 | 639233318749762337 |
|
723 ms | 61.129.75.225 |
| 57 | 2026-08-26 09:19 | 639233318749762337 |
|
723 ms | 121.14.228.169 |
| 56 | 2026-08-26 09:02 | 639233308387917838 |
|
985 ms | 61.129.75.225 |
| 55 | 2026-08-26 09:02 | 639233308387917838 |
|
985 ms | 121.14.228.169 |
| 54 | 2026-08-26 08:44 | 639233297961740122 |
|
750 ms | 121.14.228.169 |
| 53 | 2026-08-26 08:44 | 639233297961740122 |
|
750 ms | 61.129.75.225 |
| 52 | 2026-08-26 08:27 | 639233287487159094 |
|
774 ms | 121.14.228.169 |
| 51 | 2026-08-26 08:27 | 639233287487159094 |
|
774 ms | 61.129.75.225 |
| 50 | 2026-08-26 08:09 | 639233276995531707 |
|
533 ms | 61.129.75.225 |
| 49 | 2026-08-26 08:09 | 639233276995531707 |
|
533 ms | 121.14.228.169 |
| 48 | 2026-08-26 07:52 | 639233266521568229 |
|
564 ms | 121.14.228.169 |
| 47 | 2026-08-26 07:52 | 639233266521568229 |
|
564 ms | 61.129.75.225 |
| 46 | 2026-08-26 07:34 | 639233256081047431 |
|
557 ms | 121.14.228.169 |
| 45 | 2026-08-26 07:34 | 639233256081047431 |
|
557 ms | 61.129.75.225 |
| 44 | 2026-08-26 06:40 | 639233223620132921 |
|
468 ms | 121.14.228.169 |
| 43 | 2026-08-26 06:40 | 639233223620132921 |
|
468 ms | 61.129.75.225 |
| 42 | 2026-08-26 06:23 | 639233213287814244 |
|
487 ms | 121.14.228.169 |
| 41 | 2026-08-26 06:23 | 639233213287814244 |
|
487 ms | 61.129.75.225 |
| 40 | 2026-08-26 06:06 | 639233202925983161 |
|
456 ms | 61.129.75.225 |
| 39 | 2026-08-26 06:06 | 639233202925983161 |
|
456 ms | 121.14.228.169 |
| 38 | 2026-08-26 05:49 | 639233192644780696 |
|
534 ms | 61.129.75.225 |
| 37 | 2026-08-26 05:49 | 639233192644780696 |
|
534 ms | 121.14.228.169 |
| 36 | 2026-08-26 05:31 | 639233182401183833 |
|
275 ms | 121.14.228.169 |
| 35 | 2026-08-26 05:31 | 639233182401183833 |
|
275 ms | 61.129.75.225 |
| 34 | 2026-08-26 05:14 | 639233172074181051 |
|
1085 ms | 121.14.228.169 |
| 33 | 2026-08-26 05:14 | 639233172074181051 |
|
1085 ms | 61.129.75.225 |
| 32 | 2026-08-26 04:57 | 639233161808421455 |
|
527 ms | 61.129.75.225 |
| 31 | 2026-08-26 04:57 | 639233161808421455 |
|
527 ms | 121.14.228.169 |
| 30 | 2026-08-26 04:40 | 639233151357344052 |
|
458 ms | 121.14.228.169 |
| 29 | 2026-08-26 04:40 | 639233151357344052 |
|
458 ms | 61.129.75.225 |
| 28 | 2026-08-26 04:23 | 639233141034116946 |
|
539 ms | 61.129.75.225 |
| 27 | 2026-08-26 04:23 | 639233141034116946 |
|
539 ms | 121.14.228.169 |
| 26 | 2026-08-26 04:05 | 639233130828334142 |
|
555 ms | 121.14.228.169 |
| 25 | 2026-08-26 04:05 | 639233130828334142 |
|
555 ms | 61.129.75.225 |
| 24 | 2026-08-26 03:48 | 639233120373450007 |
|
498 ms | 61.129.75.225 |
| 23 | 2026-08-26 03:48 | 639233120373450007 |
|
498 ms | 121.14.228.169 |
| 22 | 2026-08-26 03:31 | 639233110066216193 |
|
445 ms | 121.14.228.169 |
| 21 | 2026-08-26 03:31 | 639233110066216193 |
|
445 ms | 61.129.75.225 |
| 20 | 2026-08-26 02:38 | 639233078065410564 |
|
517 ms | 121.14.228.169 |
| 19 | 2026-08-26 02:38 | 639233078065410564 |
|
517 ms | 61.129.75.225 |
| 18 | 2026-08-26 02:21 | 639233067787457832 |
|
517 ms | 61.129.75.225 |
| 17 | 2026-08-26 02:21 | 639233067787457832 |
|
517 ms | 121.14.228.169 |
| 16 | 2026-08-26 02:03 | 639233057501801162 |
|
816 ms | 121.14.228.169 |
| 15 | 2026-08-26 02:03 | 639233057501801162 |
|
816 ms | 61.129.75.225 |
| 14 | 2026-08-26 01:46 | 639233047089431703 |
|
520 ms | 121.14.228.169 |
| 13 | 2026-08-26 01:46 | 639233047089431703 |
|
520 ms | 61.129.75.225 |
| 12 | 2026-08-26 01:29 | 639233036754790688 |
|
550 ms | 61.129.75.225 |
| 11 | 2026-08-26 01:29 | 639233036754790688 |
|
550 ms | 121.14.228.169 |
| 10 | 2026-08-26 01:12 | 639233026412602472 |
|
550 ms | 61.129.75.225 |
| 9 | 2026-08-26 01:12 | 639233026412602472 |
|
550 ms | 121.14.228.169 |
| 8 | 2026-08-26 00:54 | 639233016064066127 |
|
718 ms | 121.14.228.169 |
| 7 | 2026-08-26 00:54 | 639233016064066127 |
|
718 ms | 61.129.75.225 |
| 6 | 2026-08-26 00:37 | 639233005922655772 |
|
456 ms | 61.129.75.225 |
| 5 | 2026-08-26 00:37 | 639233005922655772 |
|
456 ms | 121.14.228.169 |
| 4 | 2026-08-26 00:20 | 639232995672256907 |
|
601 ms | 121.14.228.169 |
| 3 | 2026-08-26 00:20 | 639232995672256907 |
|
601 ms | 61.129.75.225 |
| 2 | 2026-08-26 00:03 | 639232985300872416 |
|
1015 ms | 121.14.228.169 |
| 1 | 2026-08-26 00:03 | 639232985300872416 |
|
1015 ms | 61.129.75.225 |