History for www.substack.com
Domain: substack.com • Tracking since 2026-08-04 23:25 UTC
DNS response history for www.substack.com
www.substack.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 2026-08-12. For this date, NameServerHistory found 121 DNS check records, 118 successful responses, 3 failed responses, and 80 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 www.substack.com.
Records on Selected Date
121
Historical checks stored for this nameserver on selected date
Average Latency
80 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-12 23:48
All timestamps shown in UTC
Latest Resolved IP on Selected Date
172.64.150.56
Most recently resolved hosting IP on selected date
Successful Responses
118
Checks that returned a measurable response
Failed Responses
3
Checks with no response or no returned latency
Failure Rate
2%
Based on the selected date history
Selected Date Status
Responsive
At least one successful response exists on selected date
History for www.substack.com
Showing DNS history for 2026-08-12 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 |
|---|---|---|---|---|---|
| 121 | 2026-08-12 23:48 | 639221753022017039 |
|
117 ms | 172.64.150.56 |
| 120 | 2026-08-12 23:48 | 639221753022017039 |
|
117 ms | 104.18.37.200 |
| 119 | 2026-08-12 23:33 | 639221744107644868 |
|
36 ms | 104.18.37.200 |
| 118 | 2026-08-12 23:33 | 639221744107644868 |
|
36 ms | 172.64.150.56 |
| 117 | 2026-08-12 23:18 | 639221735030187244 |
|
38 ms | 104.18.37.200 |
| 116 | 2026-08-12 23:18 | 639221735030187244 |
|
38 ms | 172.64.150.56 |
| 115 | 2026-08-12 23:03 | 639221725815508109 |
|
229 ms | 104.18.37.200 |
| 114 | 2026-08-12 23:03 | 639221725815508109 |
|
229 ms | 172.64.150.56 |
| 113 | 2026-08-12 22:11 | 639221694790955973 |
|
93 ms | 172.64.150.56 |
| 112 | 2026-08-12 22:11 | 639221694790955973 |
|
93 ms | 104.18.37.200 |
| 111 | 2026-08-12 21:55 | 639221685562451720 |
|
97 ms | 172.64.150.56 |
| 110 | 2026-08-12 21:55 | 639221685562451720 |
|
97 ms | 104.18.37.200 |
| 109 | 2026-08-12 21:40 | 639221676023655289 |
|
152 ms | 172.64.150.56 |
| 108 | 2026-08-12 21:40 | 639221676023655289 |
|
152 ms | 104.18.37.200 |
| 107 | 2026-08-12 21:24 | 639221666449119409 |
|
5 ms | 172.64.150.56 |
| 106 | 2026-08-12 21:24 | 639221666449119409 |
|
5 ms | 104.18.37.200 |
| 105 | 2026-08-12 20:32 | 639221635456432556 |
|
55 ms | 104.18.37.200 |
| 104 | 2026-08-12 20:32 | 639221635456432556 |
|
55 ms | 172.64.150.56 |
| 103 | 2026-08-12 20:17 | 639221626313054202 |
|
301 ms | 172.64.150.56 |
| 102 | 2026-08-12 20:17 | 639221626313054202 |
|
301 ms | 104.18.37.200 |
| 101 | 2026-08-12 20:01 | 639221617091958857 |
|
137 ms | 172.64.150.56 |
| 100 | 2026-08-12 20:01 | 639221617091958857 |
|
137 ms | 104.18.37.200 |
| 99 | 2026-08-12 19:46 | 639221607786737151 |
|
146 ms | 172.64.150.56 |
| 98 | 2026-08-12 19:46 | 639221607786737151 |
|
146 ms | 104.18.37.200 |
| 97 | 2026-08-12 18:54 | 639221576664330059 |
|
57 ms | 172.64.150.56 |
| 96 | 2026-08-12 18:54 | 639221576664330059 |
|
57 ms | 104.18.37.200 |
| 95 | 2026-08-12 18:39 | 639221567514216674 |
|
197 ms | 104.18.37.200 |
| 94 | 2026-08-12 18:39 | 639221567514216674 |
|
197 ms | 172.64.150.56 |
| 93 | 2026-08-12 18:24 | 639221558399762524 |
|
35 ms | 172.64.150.56 |
| 92 | 2026-08-12 18:24 | 639221558399762524 |
|
35 ms | 104.18.37.200 |
| 91 | 2026-08-12 18:08 | 639221549052016282 |
|
142 ms | 104.18.37.200 |
| 90 | 2026-08-12 18:08 | 639221549052016282 |
|
142 ms | 172.64.150.56 |
| 89 | 2026-08-12 17:16 | 639221517673834934 |
|
61 ms | 172.64.150.56 |
| 88 | 2026-08-12 17:16 | 639221517673834934 |
|
61 ms | 104.18.37.200 |
| 87 | 2026-08-12 17:00 | 639221508282311633 |
|
31 ms | 104.18.37.200 |
| 86 | 2026-08-12 17:00 | 639221508282311633 |
|
31 ms | 172.64.150.56 |
| 85 | 2026-08-12 16:44 | 639221498786324983 |
|
123 ms | 172.64.150.56 |
| 84 | 2026-08-12 16:44 | 639221498786324983 |
|
123 ms | 104.18.37.200 |
| 83 | 2026-08-12 16:28 | 639221489157589737 |
|
53 ms | 104.18.37.200 |
| 82 | 2026-08-12 16:28 | 639221489157589737 |
|
53 ms | 172.64.150.56 |
| 81 | 2026-08-12 15:36 | 639221457655914645 |
|
176 ms | 172.64.150.56 |
| 80 | 2026-08-12 15:36 | 639221457655914645 |
|
176 ms | 104.18.37.200 |
| 79 | 2026-08-12 15:20 | 639221448164090526 |
|
11 ms | 104.18.37.200 |
| 78 | 2026-08-12 15:20 | 639221448164090526 |
|
11 ms | 172.64.150.56 |
| 77 | 2026-08-12 15:04 | 639221438725783630 |
|
90 ms | 104.18.37.200 |
| 76 | 2026-08-12 15:04 | 639221438725783630 |
|
90 ms | 172.64.150.56 |
| 75 | 2026-08-12 14:48 | 639221429178071087 |
|
44 ms | 172.64.150.56 |
| 74 | 2026-08-12 14:48 | 639221429178071087 |
|
44 ms | 104.18.37.200 |
| 73 | 2026-08-12 13:56 | 639221397761278719 |
|
161 ms | 172.64.150.56 |
| 72 | 2026-08-12 13:56 | 639221397761278719 |
|
161 ms | 104.18.37.200 |
| 71 | 2026-08-12 13:40 | 639221388200567278 |
|
39 ms | 104.18.37.200 |
| 70 | 2026-08-12 13:40 | 639221388200567278 |
|
39 ms | 172.64.150.56 |
| 69 | 2026-08-12 13:24 | 639221378483570949 |
|
169 ms | 104.18.37.200 |
| 68 | 2026-08-12 13:24 | 639221378483570949 |
|
169 ms | 172.64.150.56 |
| 67 | 2026-08-12 13:08 | 639221368872360139 |
|
120 ms | 172.64.150.56 |
| 66 | 2026-08-12 13:08 | 639221368872360139 |
|
120 ms | 104.18.37.200 |
| 65 | 2026-08-12 12:15 | 639221337226647415 |
|
58 ms | 172.64.150.56 |
| 64 | 2026-08-12 12:15 | 639221337226647415 |
|
58 ms | 104.18.37.200 |
| 63 | 2026-08-12 11:59 | 639221327924087446 |
|
39 ms | 172.64.150.56 |
| 62 | 2026-08-12 11:59 | 639221327924087446 |
|
39 ms | 104.18.37.200 |
| 61 | 2026-08-12 11:43 | 639221318096976375 |
|
53 ms | 172.64.150.56 |
| 60 | 2026-08-12 11:43 | 639221318096976375 |
|
53 ms | 104.18.37.200 |
| 59 | 2026-08-12 11:27 | 639221308343145274 |
|
130 ms | 104.18.37.200 |
| 58 | 2026-08-12 11:27 | 639221308343145274 |
|
130 ms | 172.64.150.56 |
| 57 | 2026-08-12 10:35 | 639221277089610470 |
|
193 ms | 104.18.37.200 |
| 56 | 2026-08-12 10:35 | 639221277089610470 |
|
193 ms | 172.64.150.56 |
| 55 | 2026-08-12 10:19 | 639221267628136359 |
|
- | |
| 54 | 2026-08-12 10:03 | 639221257907569952 |
|
20 ms | 172.64.150.56 |
| 53 | 2026-08-12 10:03 | 639221257907569952 |
|
20 ms | 104.18.37.200 |
| 52 | 2026-08-12 09:47 | 639221248402420965 |
|
96 ms | 104.18.37.200 |
| 51 | 2026-08-12 09:47 | 639221248402420965 |
|
96 ms | 172.64.150.56 |
| 50 | 2026-08-12 08:54 | 639221216797540533 |
|
55 ms | 104.18.37.200 |
| 49 | 2026-08-12 08:54 | 639221216797540533 |
|
55 ms | 172.64.150.56 |
| 48 | 2026-08-12 08:38 | 639221207385792352 |
|
112 ms | 104.18.37.200 |
| 47 | 2026-08-12 08:38 | 639221207385792352 |
|
112 ms | 172.64.150.56 |
| 46 | 2026-08-12 08:23 | 639221198078534844 |
|
32 ms | 172.64.150.56 |
| 45 | 2026-08-12 08:23 | 639221198078534844 |
|
32 ms | 104.18.37.200 |
| 44 | 2026-08-12 08:07 | 639221188677585577 |
|
75 ms | 104.18.37.200 |
| 43 | 2026-08-12 08:07 | 639221188677585577 |
|
75 ms | 172.64.150.56 |
| 42 | 2026-08-12 07:15 | 639221157276484143 |
|
13 ms | 104.18.37.200 |
| 41 | 2026-08-12 07:15 | 639221157276484143 |
|
13 ms | 172.64.150.56 |
| 40 | 2026-08-12 06:59 | 639221147876262183 |
|
9 ms | 104.18.37.200 |
| 39 | 2026-08-12 06:59 | 639221147876262183 |
|
9 ms | 172.64.150.56 |
| 38 | 2026-08-12 06:43 | 639221138388812469 |
|
13 ms | 172.64.150.56 |
| 37 | 2026-08-12 06:43 | 639221138388812469 |
|
13 ms | 104.18.37.200 |
| 36 | 2026-08-12 06:28 | 639221128987381118 |
|
30 ms | 172.64.150.56 |
| 35 | 2026-08-12 06:28 | 639221128987381118 |
|
30 ms | 104.18.37.200 |
| 34 | 2026-08-12 05:36 | 639221097816416095 |
|
- | |
| 33 | 2026-08-12 05:20 | 639221088508065616 |
|
20 ms | 172.64.150.56 |
| 32 | 2026-08-12 05:20 | 639221088508065616 |
|
20 ms | 104.18.37.200 |
| 31 | 2026-08-12 05:05 | 639221079092308503 |
|
- | |
| 30 | 2026-08-12 04:49 | 639221069595873597 |
|
9 ms | 104.18.37.200 |
| 29 | 2026-08-12 04:49 | 639221069595873597 |
|
9 ms | 172.64.150.56 |
| 28 | 2026-08-12 03:57 | 639221038601577496 |
|
19 ms | 104.18.37.200 |
| 27 | 2026-08-12 03:57 | 639221038601577496 |
|
19 ms | 172.64.150.56 |
| 26 | 2026-08-12 03:42 | 639221029533901299 |
|
5 ms | 172.64.150.56 |
| 25 | 2026-08-12 03:42 | 639221029533901299 |
|
5 ms | 104.18.37.200 |
| 24 | 2026-08-12 03:27 | 639221020333828965 |
|
23 ms | 172.64.150.56 |
| 23 | 2026-08-12 03:27 | 639221020333828965 |
|
23 ms | 104.18.37.200 |
| 22 | 2026-08-12 03:11 | 639221011110510484 |
|
401 ms | 104.18.37.200 |
| 21 | 2026-08-12 03:11 | 639221011110510484 |
|
401 ms | 172.64.150.56 |
| 20 | 2026-08-12 02:19 | 639220979815209769 |
|
52 ms | 104.18.37.200 |
| 19 | 2026-08-12 02:19 | 639220979815209769 |
|
52 ms | 172.64.150.56 |
| 18 | 2026-08-12 02:04 | 639220970971410921 |
|
24 ms | 172.64.150.56 |
| 17 | 2026-08-12 02:04 | 639220970971410921 |
|
24 ms | 104.18.37.200 |
| 16 | 2026-08-12 01:49 | 639220961848982361 |
|
32 ms | 172.64.150.56 |
| 15 | 2026-08-12 01:49 | 639220961848982361 |
|
32 ms | 104.18.37.200 |
| 14 | 2026-08-12 01:34 | 639220952784591501 |
|
115 ms | 172.64.150.56 |
| 13 | 2026-08-12 01:34 | 639220952784591501 |
|
115 ms | 104.18.37.200 |
| 12 | 2026-08-12 01:19 | 639220943893596731 |
|
38 ms | 172.64.150.56 |
| 11 | 2026-08-12 01:19 | 639220943893596731 |
|
38 ms | 104.18.37.200 |
| 10 | 2026-08-12 01:04 | 639220934954704520 |
|
36 ms | 172.64.150.56 |
| 9 | 2026-08-12 01:04 | 639220934954704520 |
|
36 ms | 104.18.37.200 |
| 8 | 2026-08-12 00:49 | 639220925792457751 |
|
24 ms | 104.18.37.200 |
| 7 | 2026-08-12 00:49 | 639220925792457751 |
|
24 ms | 172.64.150.56 |
| 6 | 2026-08-12 00:34 | 639220916610063538 |
|
31 ms | 104.18.37.200 |
| 5 | 2026-08-12 00:34 | 639220916610063538 |
|
31 ms | 172.64.150.56 |
| 4 | 2026-08-12 00:18 | 639220907229361754 |
|
41 ms | 172.64.150.56 |
| 3 | 2026-08-12 00:18 | 639220907229361754 |
|
41 ms | 104.18.37.200 |
| 2 | 2026-08-12 00:03 | 639220897896762127 |
|
27 ms | 104.18.37.200 |
| 1 | 2026-08-12 00:03 | 639220897896762127 |
|
27 ms | 172.64.150.56 |