History for letsencrypt.org
Domain: letsencrypt.org • Tracking since 2026-08-04 23:25 UTC
DNS response history for letsencrypt.org
letsencrypt.org 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 2026-08-19. For this date, NameServerHistory found 148 DNS check records, 146 successful responses, 2 failed responses, and 99 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 letsencrypt.org.
Records on Selected Date
148
Historical checks stored for this nameserver on selected date
Average Latency
99 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-19 23:55
All timestamps shown in UTC
Latest Resolved IP on Selected Date
35.157.26.135
Most recently resolved hosting IP on selected date
Successful Responses
146
Checks that returned a measurable response
Failed Responses
2
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 letsencrypt.org
Showing DNS history for 2026-08-19 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 |
|---|---|---|---|---|---|
| 148 | 2026-08-19 23:55 | 639227805445376839 |
|
230 ms | 35.157.26.135 |
| 147 | 2026-08-19 23:55 | 639227805445376839 |
|
230 ms | 63.176.8.218 |
| 146 | 2026-08-19 23:39 | 639227795899225951 |
|
47 ms | 35.157.26.135 |
| 145 | 2026-08-19 23:39 | 639227795899225951 |
|
47 ms | 63.176.8.218 |
| 144 | 2026-08-19 23:24 | 639227786351762008 |
|
- | |
| 143 | 2026-08-19 23:07 | 639227776640591733 |
|
19 ms | 63.176.8.218 |
| 142 | 2026-08-19 23:07 | 639227776640591733 |
|
19 ms | 35.157.26.135 |
| 141 | 2026-08-19 22:51 | 639227767128841282 |
|
92 ms | 63.176.8.218 |
| 140 | 2026-08-19 22:51 | 639227767128841282 |
|
92 ms | 35.157.26.135 |
| 139 | 2026-08-19 22:35 | 639227757477304711 |
|
115 ms | 35.157.26.135 |
| 138 | 2026-08-19 22:35 | 639227757477304711 |
|
115 ms | 63.176.8.218 |
| 137 | 2026-08-19 22:19 | 639227747572098014 |
|
36 ms | 35.157.26.135 |
| 136 | 2026-08-19 22:19 | 639227747572098014 |
|
36 ms | 63.176.8.218 |
| 135 | 2026-08-19 22:02 | 639227737588613113 |
|
2016 ms | 35.157.26.135 |
| 134 | 2026-08-19 22:02 | 639227737588613113 |
|
2016 ms | 63.176.8.218 |
| 133 | 2026-08-19 21:10 | 639227706134603955 |
|
31 ms | 63.176.8.218 |
| 132 | 2026-08-19 21:10 | 639227706134603955 |
|
31 ms | 35.157.26.135 |
| 131 | 2026-08-19 20:54 | 639227696589027396 |
|
12 ms | 63.176.8.218 |
| 130 | 2026-08-19 20:54 | 639227696589027396 |
|
12 ms | 35.157.26.135 |
| 129 | 2026-08-19 20:38 | 639227687097707639 |
|
88 ms | 18.208.88.157 |
| 128 | 2026-08-19 20:38 | 639227687097707639 |
|
88 ms | 98.84.224.111 |
| 127 | 2026-08-19 20:22 | 639227677474464487 |
|
118 ms | 63.176.8.218 |
| 126 | 2026-08-19 20:22 | 639227677474464487 |
|
118 ms | 35.157.26.135 |
| 125 | 2026-08-19 20:06 | 639227667767441118 |
|
46 ms | 35.157.26.135 |
| 124 | 2026-08-19 20:06 | 639227667767441118 |
|
46 ms | 63.176.8.218 |
| 123 | 2026-08-19 19:49 | 639227657984833832 |
|
45 ms | 35.157.26.135 |
| 122 | 2026-08-19 19:49 | 639227657984833832 |
|
45 ms | 63.176.8.218 |
| 121 | 2026-08-19 19:33 | 639227648079992640 |
|
44 ms | 18.208.88.157 |
| 120 | 2026-08-19 19:33 | 639227648079992640 |
|
44 ms | 98.84.224.111 |
| 119 | 2026-08-19 19:16 | 639227638125048441 |
|
90 ms | 63.176.8.218 |
| 118 | 2026-08-19 19:16 | 639227638125048441 |
|
90 ms | 35.157.26.135 |
| 117 | 2026-08-19 19:00 | 639227628211392142 |
|
38 ms | 35.157.26.135 |
| 116 | 2026-08-19 19:00 | 639227628211392142 |
|
38 ms | 63.176.8.218 |
| 115 | 2026-08-19 18:43 | 639227618261696275 |
|
162 ms | 35.157.26.135 |
| 114 | 2026-08-19 18:43 | 639227618261696275 |
|
162 ms | 63.176.8.218 |
| 113 | 2026-08-19 18:27 | 639227608366233645 |
|
8 ms | 35.157.26.135 |
| 112 | 2026-08-19 18:27 | 639227608366233645 |
|
8 ms | 63.176.8.218 |
| 111 | 2026-08-19 18:10 | 639227598301787588 |
|
391 ms | 35.157.26.135 |
| 110 | 2026-08-19 18:10 | 639227598301787588 |
|
391 ms | 63.176.8.218 |
| 109 | 2026-08-19 17:17 | 639227566241010716 |
|
13 ms | 35.157.26.135 |
| 108 | 2026-08-19 17:17 | 639227566241010716 |
|
13 ms | 63.176.8.218 |
| 107 | 2026-08-19 17:00 | 639227556454538959 |
|
51 ms | 35.157.26.135 |
| 106 | 2026-08-19 17:00 | 639227556454538959 |
|
51 ms | 63.176.8.218 |
| 105 | 2026-08-19 16:44 | 639227546640305542 |
|
34 ms | 63.176.8.218 |
| 104 | 2026-08-19 16:44 | 639227546640305542 |
|
34 ms | 35.157.26.135 |
| 103 | 2026-08-19 16:28 | 639227536965466472 |
|
74 ms | 35.157.26.135 |
| 102 | 2026-08-19 16:28 | 639227536965466472 |
|
74 ms | 63.176.8.218 |
| 101 | 2026-08-19 16:11 | 639227527048658280 |
|
31 ms | 63.176.8.218 |
| 100 | 2026-08-19 16:11 | 639227527048658280 |
|
31 ms | 35.157.26.135 |
| 99 | 2026-08-19 15:55 | 639227517386634438 |
|
19 ms | 35.157.26.135 |
| 98 | 2026-08-19 15:55 | 639227517386634438 |
|
19 ms | 63.176.8.218 |
| 97 | 2026-08-19 15:39 | 639227507459551637 |
|
5 ms | 35.157.26.135 |
| 96 | 2026-08-19 15:39 | 639227507459551637 |
|
5 ms | 63.176.8.218 |
| 95 | 2026-08-19 15:22 | 639227497515595277 |
|
30 ms | 63.176.8.218 |
| 94 | 2026-08-19 15:22 | 639227497515595277 |
|
30 ms | 35.157.26.135 |
| 93 | 2026-08-19 15:05 | 639227487441798036 |
|
34 ms | 63.176.8.218 |
| 92 | 2026-08-19 15:05 | 639227487441798036 |
|
34 ms | 35.157.26.135 |
| 91 | 2026-08-19 14:49 | 639227477445551863 |
|
103 ms | 35.157.26.135 |
| 90 | 2026-08-19 14:49 | 639227477445551863 |
|
103 ms | 63.176.8.218 |
| 89 | 2026-08-19 14:32 | 639227467297067891 |
|
54 ms | 35.157.26.135 |
| 88 | 2026-08-19 14:32 | 639227467297067891 |
|
54 ms | 63.176.8.218 |
| 87 | 2026-08-19 14:15 | 639227457057795635 |
|
181 ms | 35.157.26.135 |
| 86 | 2026-08-19 14:15 | 639227457057795635 |
|
181 ms | 63.176.8.218 |
| 85 | 2026-08-19 13:22 | 639227425244777397 |
|
6 ms | 63.176.8.218 |
| 84 | 2026-08-19 13:22 | 639227425244777397 |
|
6 ms | 35.157.26.135 |
| 83 | 2026-08-19 13:05 | 639227415422116485 |
|
36 ms | 35.157.26.135 |
| 82 | 2026-08-19 13:05 | 639227415422116485 |
|
36 ms | 63.176.8.218 |
| 81 | 2026-08-19 12:48 | 639227405307256053 |
|
4 ms | 63.176.8.218 |
| 80 | 2026-08-19 12:48 | 639227405307256053 |
|
4 ms | 35.157.26.135 |
| 79 | 2026-08-19 12:32 | 639227395396602630 |
|
19 ms | 35.157.26.135 |
| 78 | 2026-08-19 12:32 | 639227395396602630 |
|
19 ms | 63.176.8.218 |
| 77 | 2026-08-19 12:15 | 639227385510363611 |
|
125 ms | 35.157.26.135 |
| 76 | 2026-08-19 12:15 | 639227385510363611 |
|
125 ms | 63.176.8.218 |
| 75 | 2026-08-19 11:59 | 639227375508324850 |
|
96 ms | 35.157.26.135 |
| 74 | 2026-08-19 11:59 | 639227375508324850 |
|
96 ms | 63.176.8.218 |
| 73 | 2026-08-19 11:42 | 639227365326611906 |
|
34 ms | 35.157.26.135 |
| 72 | 2026-08-19 11:42 | 639227365326611906 |
|
34 ms | 63.176.8.218 |
| 71 | 2026-08-19 11:25 | 639227355360014208 |
|
27 ms | 35.157.26.135 |
| 70 | 2026-08-19 11:25 | 639227355360014208 |
|
27 ms | 63.176.8.218 |
| 69 | 2026-08-19 11:08 | 639227345036782165 |
|
67 ms | 35.157.26.135 |
| 68 | 2026-08-19 11:08 | 639227345036782165 |
|
67 ms | 63.176.8.218 |
| 67 | 2026-08-19 10:51 | 639227334992964533 |
|
34 ms | 35.157.26.135 |
| 66 | 2026-08-19 10:51 | 639227334992964533 |
|
34 ms | 63.176.8.218 |
| 65 | 2026-08-19 10:34 | 639227324986605572 |
|
81 ms | 98.84.224.111 |
| 64 | 2026-08-19 10:34 | 639227324986605572 |
|
81 ms | 18.208.88.157 |
| 63 | 2026-08-19 10:18 | 639227314928414539 |
|
161 ms | 35.157.26.135 |
| 62 | 2026-08-19 10:18 | 639227314928414539 |
|
161 ms | 63.176.8.218 |
| 61 | 2026-08-19 09:25 | 639227283029182134 |
|
30 ms | 35.157.26.135 |
| 60 | 2026-08-19 09:25 | 639227283029182134 |
|
30 ms | 63.176.8.218 |
| 59 | 2026-08-19 09:08 | 639227273294779350 |
|
22 ms | 35.157.26.135 |
| 58 | 2026-08-19 09:08 | 639227273294779350 |
|
22 ms | 63.176.8.218 |
| 57 | 2026-08-19 08:52 | 639227263525231313 |
|
85 ms | 63.176.8.218 |
| 56 | 2026-08-19 08:52 | 639227263525231313 |
|
85 ms | 35.157.26.135 |
| 55 | 2026-08-19 08:35 | 639227253578313363 |
|
50 ms | 35.157.26.135 |
| 54 | 2026-08-19 08:35 | 639227253578313363 |
|
50 ms | 63.176.8.218 |
| 53 | 2026-08-19 08:19 | 639227243649973322 |
|
12 ms | 63.176.8.218 |
| 52 | 2026-08-19 08:19 | 639227243649973322 |
|
12 ms | 35.157.26.135 |
| 51 | 2026-08-19 08:02 | 639227233581059317 |
|
7 ms | 35.157.26.135 |
| 50 | 2026-08-19 08:02 | 639227233581059317 |
|
7 ms | 63.176.8.218 |
| 49 | 2026-08-19 07:46 | 639227223667352067 |
|
27 ms | 63.176.8.218 |
| 48 | 2026-08-19 07:46 | 639227223667352067 |
|
27 ms | 35.157.26.135 |
| 47 | 2026-08-19 07:29 | 639227213714837066 |
|
235 ms | 35.157.26.135 |
| 46 | 2026-08-19 07:29 | 639227213714837066 |
|
235 ms | 63.176.8.218 |
| 45 | 2026-08-19 07:12 | 639227203701208496 |
|
157 ms | 63.176.8.218 |
| 44 | 2026-08-19 07:12 | 639227203701208496 |
|
157 ms | 35.157.26.135 |
| 43 | 2026-08-19 06:56 | 639227193643202179 |
|
60 ms | 35.157.26.135 |
| 42 | 2026-08-19 06:56 | 639227193643202179 |
|
60 ms | 63.176.8.218 |
| 41 | 2026-08-19 06:39 | 639227183584431597 |
|
40 ms | 35.157.26.135 |
| 40 | 2026-08-19 06:39 | 639227183584431597 |
|
40 ms | 63.176.8.218 |
| 39 | 2026-08-19 06:22 | 639227173347403088 |
|
148 ms | 63.176.8.218 |
| 38 | 2026-08-19 06:22 | 639227173347403088 |
|
148 ms | 35.157.26.135 |
| 37 | 2026-08-19 05:29 | 639227141523007601 |
|
159 ms | 35.157.26.135 |
| 36 | 2026-08-19 05:29 | 639227141523007601 |
|
159 ms | 63.176.8.218 |
| 35 | 2026-08-19 05:12 | 639227131785931574 |
|
12 ms | 63.176.8.218 |
| 34 | 2026-08-19 05:12 | 639227131785931574 |
|
12 ms | 35.157.26.135 |
| 33 | 2026-08-19 04:56 | 639227122176475389 |
|
17 ms | 35.157.26.135 |
| 32 | 2026-08-19 04:56 | 639227122176475389 |
|
17 ms | 63.176.8.218 |
| 31 | 2026-08-19 04:41 | 639227112668934596 |
|
28 ms | 35.157.26.135 |
| 30 | 2026-08-19 04:41 | 639227112668934596 |
|
28 ms | 63.176.8.218 |
| 29 | 2026-08-19 04:24 | 639227102773292788 |
|
- | |
| 28 | 2026-08-19 04:08 | 639227093141136930 |
|
94 ms | 63.176.8.218 |
| 27 | 2026-08-19 04:08 | 639227093141136930 |
|
94 ms | 35.157.26.135 |
| 26 | 2026-08-19 03:52 | 639227083449420147 |
|
107 ms | 35.157.26.135 |
| 25 | 2026-08-19 03:52 | 639227083449420147 |
|
107 ms | 63.176.8.218 |
| 24 | 2026-08-19 03:36 | 639227073771748493 |
|
15 ms | 35.157.26.135 |
| 23 | 2026-08-19 03:36 | 639227073771748493 |
|
15 ms | 63.176.8.218 |
| 22 | 2026-08-19 03:19 | 639227063977347614 |
|
10 ms | 63.176.8.218 |
| 21 | 2026-08-19 03:19 | 639227063977347614 |
|
10 ms | 35.157.26.135 |
| 20 | 2026-08-19 03:03 | 639227054253519024 |
|
95 ms | 63.176.8.218 |
| 19 | 2026-08-19 03:03 | 639227054253519024 |
|
95 ms | 35.157.26.135 |
| 18 | 2026-08-19 02:47 | 639227044381963886 |
|
49 ms | 63.176.8.218 |
| 17 | 2026-08-19 02:47 | 639227044381963886 |
|
49 ms | 35.157.26.135 |
| 16 | 2026-08-19 02:30 | 639227034441085514 |
|
172 ms | 63.176.8.218 |
| 15 | 2026-08-19 02:30 | 639227034441085514 |
|
172 ms | 35.157.26.135 |
| 14 | 2026-08-19 01:38 | 639227003126489968 |
|
123 ms | 63.176.8.218 |
| 13 | 2026-08-19 01:38 | 639227003126489968 |
|
123 ms | 35.157.26.135 |
| 12 | 2026-08-19 01:22 | 639226993456311614 |
|
27 ms | 63.176.8.218 |
| 11 | 2026-08-19 01:22 | 639226993456311614 |
|
27 ms | 35.157.26.135 |
| 10 | 2026-08-19 01:06 | 639226983847312345 |
|
161 ms | 63.176.8.218 |
| 9 | 2026-08-19 01:06 | 639226983847312345 |
|
161 ms | 35.157.26.135 |
| 8 | 2026-08-19 00:50 | 639226974357874853 |
|
23 ms | 63.176.8.218 |
| 7 | 2026-08-19 00:50 | 639226974357874853 |
|
23 ms | 35.157.26.135 |
| 6 | 2026-08-19 00:34 | 639226964670484721 |
|
104 ms | 35.157.26.135 |
| 5 | 2026-08-19 00:34 | 639226964670484721 |
|
104 ms | 63.176.8.218 |
| 4 | 2026-08-19 00:18 | 639226954857899696 |
|
116 ms | 35.157.26.135 |
| 3 | 2026-08-19 00:18 | 639226954857899696 |
|
116 ms | 63.176.8.218 |
| 2 | 2026-08-19 00:01 | 639226945091603488 |
|
80 ms | 35.157.26.135 |
| 1 | 2026-08-19 00:01 | 639226945091603488 |
|
80 ms | 63.176.8.218 |