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 2026-08-11. For this date, NameServerHistory found 151 DNS check records, 150 successful responses, 1 failed responses, and 83 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
151
Historical checks stored for this nameserver on selected date
Average Latency
83 ms
Calculated from available response records
Latest Check on Selected Date
2026-08-11 23:47
All timestamps shown in UTC
Latest Resolved IP on Selected Date
104.18.37.200
Most recently resolved hosting IP on selected date
Successful Responses
150
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 www.substack.com
Showing DNS history for 2026-08-11 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 |
|---|---|---|---|---|---|
| 151 | 2026-08-11 23:47 | 639220888396333845 |
|
28 ms | 104.18.37.200 |
| 150 | 2026-08-11 23:47 | 639220888396333845 |
|
28 ms | 172.64.150.56 |
| 149 | 2026-08-11 23:31 | 639220878864937382 |
|
287 ms | 104.18.37.200 |
| 148 | 2026-08-11 23:31 | 639220878864937382 |
|
287 ms | 172.64.150.56 |
| 147 | 2026-08-11 22:38 | 639220847369072314 |
|
20 ms | 172.64.150.56 |
| 146 | 2026-08-11 22:38 | 639220847369072314 |
|
20 ms | 104.18.37.200 |
| 145 | 2026-08-11 22:23 | 639220838037764925 |
|
127 ms | 172.64.150.56 |
| 144 | 2026-08-11 22:23 | 639220838037764925 |
|
127 ms | 104.18.37.200 |
| 143 | 2026-08-11 22:07 | 639220828735120634 |
|
26 ms | 172.64.150.56 |
| 142 | 2026-08-11 22:07 | 639220828735120634 |
|
26 ms | 104.18.37.200 |
| 141 | 2026-08-11 21:52 | 639220819447979766 |
|
24 ms | 172.64.150.56 |
| 140 | 2026-08-11 21:52 | 639220819447979766 |
|
24 ms | 104.18.37.200 |
| 139 | 2026-08-11 21:36 | 639220810056531741 |
|
37 ms | 172.64.150.56 |
| 138 | 2026-08-11 21:36 | 639220810056531741 |
|
37 ms | 104.18.37.200 |
| 137 | 2026-08-11 21:21 | 639220800745746593 |
|
44 ms | 104.18.37.200 |
| 136 | 2026-08-11 21:21 | 639220800745746593 |
|
44 ms | 172.64.150.56 |
| 135 | 2026-08-11 21:05 | 639220791351626349 |
|
28 ms | 104.18.37.200 |
| 134 | 2026-08-11 21:05 | 639220791351626349 |
|
28 ms | 172.64.150.56 |
| 133 | 2026-08-11 20:50 | 639220782021256610 |
|
102 ms | 172.64.150.56 |
| 132 | 2026-08-11 20:50 | 639220782021256610 |
|
102 ms | 104.18.37.200 |
| 131 | 2026-08-11 20:34 | 639220772603347755 |
|
120 ms | 104.18.37.200 |
| 130 | 2026-08-11 20:34 | 639220772603347755 |
|
120 ms | 172.64.150.56 |
| 129 | 2026-08-11 20:18 | 639220763224057047 |
|
39 ms | 104.18.37.200 |
| 128 | 2026-08-11 20:18 | 639220763224057047 |
|
39 ms | 172.64.150.56 |
| 127 | 2026-08-11 20:02 | 639220753691117767 |
|
118 ms | 172.64.150.56 |
| 126 | 2026-08-11 20:02 | 639220753691117767 |
|
118 ms | 104.18.37.200 |
| 125 | 2026-08-11 19:46 | 639220744107836218 |
|
105 ms | 104.18.37.200 |
| 124 | 2026-08-11 19:46 | 639220744107836218 |
|
105 ms | 172.64.150.56 |
| 123 | 2026-08-11 18:53 | 639220711927629898 |
|
35 ms | 172.64.150.56 |
| 122 | 2026-08-11 18:53 | 639220711927629898 |
|
35 ms | 104.18.37.200 |
| 121 | 2026-08-11 18:37 | 639220702299437921 |
|
162 ms | 104.18.37.200 |
| 120 | 2026-08-11 18:37 | 639220702299437921 |
|
162 ms | 172.64.150.56 |
| 119 | 2026-08-11 18:20 | 639220692505468181 |
|
89 ms | 104.18.37.200 |
| 118 | 2026-08-11 18:20 | 639220692505468181 |
|
89 ms | 172.64.150.56 |
| 117 | 2026-08-11 18:04 | 639220682669911239 |
|
117 ms | 104.18.37.200 |
| 116 | 2026-08-11 18:04 | 639220682669911239 |
|
117 ms | 172.64.150.56 |
| 115 | 2026-08-11 17:48 | 639220672929841526 |
|
194 ms | 172.64.150.56 |
| 114 | 2026-08-11 17:48 | 639220672929841526 |
|
194 ms | 104.18.37.200 |
| 113 | 2026-08-11 17:32 | 639220663225662315 |
|
35 ms | 104.18.37.200 |
| 112 | 2026-08-11 17:32 | 639220663225662315 |
|
35 ms | 172.64.150.56 |
| 111 | 2026-08-11 17:16 | 639220653846255684 |
|
107 ms | 104.18.37.200 |
| 110 | 2026-08-11 17:16 | 639220653846255684 |
|
107 ms | 172.64.150.56 |
| 109 | 2026-08-11 17:00 | 639220644420909059 |
|
29 ms | 172.64.150.56 |
| 108 | 2026-08-11 17:00 | 639220644420909059 |
|
29 ms | 104.18.37.200 |
| 107 | 2026-08-11 16:45 | 639220635074970435 |
|
144 ms | 172.64.150.56 |
| 106 | 2026-08-11 16:45 | 639220635074970435 |
|
144 ms | 104.18.37.200 |
| 105 | 2026-08-11 16:29 | 639220625614385966 |
|
98 ms | 172.64.150.56 |
| 104 | 2026-08-11 16:29 | 639220625614385966 |
|
98 ms | 104.18.37.200 |
| 103 | 2026-08-11 16:13 | 639220616132212636 |
|
25 ms | 104.18.37.200 |
| 102 | 2026-08-11 16:13 | 639220616132212636 |
|
25 ms | 172.64.150.56 |
| 101 | 2026-08-11 15:57 | 639220606533651662 |
|
230 ms | 104.18.37.200 |
| 100 | 2026-08-11 15:57 | 639220606533651662 |
|
230 ms | 172.64.150.56 |
| 99 | 2026-08-11 15:04 | 639220574514514318 |
|
116 ms | 172.64.150.56 |
| 98 | 2026-08-11 15:04 | 639220574514514318 |
|
116 ms | 104.18.37.200 |
| 97 | 2026-08-11 14:48 | 639220565124823874 |
|
- | |
| 96 | 2026-08-11 14:33 | 639220555799311478 |
|
24 ms | 104.18.37.200 |
| 95 | 2026-08-11 14:33 | 639220555799311478 |
|
24 ms | 172.64.150.56 |
| 94 | 2026-08-11 14:17 | 639220546481577614 |
|
93 ms | 104.18.37.200 |
| 93 | 2026-08-11 14:17 | 639220546481577614 |
|
93 ms | 172.64.150.56 |
| 92 | 2026-08-11 14:01 | 639220537036533154 |
|
90 ms | 172.64.150.56 |
| 91 | 2026-08-11 14:01 | 639220537036533154 |
|
90 ms | 104.18.37.200 |
| 90 | 2026-08-11 13:46 | 639220527719177174 |
|
27 ms | 104.18.37.200 |
| 89 | 2026-08-11 13:46 | 639220527719177174 |
|
27 ms | 172.64.150.56 |
| 88 | 2026-08-11 13:30 | 639220518173088308 |
|
29 ms | 172.64.150.56 |
| 87 | 2026-08-11 13:30 | 639220518173088308 |
|
29 ms | 104.18.37.200 |
| 86 | 2026-08-11 13:14 | 639220508902896243 |
|
27 ms | 104.18.37.200 |
| 85 | 2026-08-11 13:14 | 639220508902896243 |
|
27 ms | 172.64.150.56 |
| 84 | 2026-08-11 12:59 | 639220499455923005 |
|
26 ms | 104.18.37.200 |
| 83 | 2026-08-11 12:59 | 639220499455923005 |
|
26 ms | 172.64.150.56 |
| 82 | 2026-08-11 12:43 | 639220490082583768 |
|
26 ms | 172.64.150.56 |
| 81 | 2026-08-11 12:43 | 639220490082583768 |
|
26 ms | 104.18.37.200 |
| 80 | 2026-08-11 12:27 | 639220480636590998 |
|
74 ms | 104.18.37.200 |
| 79 | 2026-08-11 12:27 | 639220480636590998 |
|
74 ms | 172.64.150.56 |
| 78 | 2026-08-11 12:09 | 639220469585029273 |
|
224 ms | 104.18.37.200 |
| 77 | 2026-08-11 12:09 | 639220469585029273 |
|
224 ms | 172.64.150.56 |
| 76 | 2026-08-11 11:16 | 639220438074188884 |
|
32 ms | 172.64.150.56 |
| 75 | 2026-08-11 11:16 | 639220438074188884 |
|
32 ms | 104.18.37.200 |
| 74 | 2026-08-11 11:01 | 639220428789720049 |
|
16 ms | 172.64.150.56 |
| 73 | 2026-08-11 11:01 | 639220428789720049 |
|
16 ms | 104.18.37.200 |
| 72 | 2026-08-11 10:45 | 639220419558302820 |
|
49 ms | 104.18.37.200 |
| 71 | 2026-08-11 10:45 | 639220419558302820 |
|
49 ms | 172.64.150.56 |
| 70 | 2026-08-11 10:30 | 639220410448738795 |
|
23 ms | 104.18.37.200 |
| 69 | 2026-08-11 10:30 | 639220410448738795 |
|
23 ms | 172.64.150.56 |
| 68 | 2026-08-11 10:15 | 639220401034081530 |
|
117 ms | 104.18.37.200 |
| 67 | 2026-08-11 10:15 | 639220401034081530 |
|
117 ms | 172.64.150.56 |
| 66 | 2026-08-11 09:59 | 639220391766674161 |
|
35 ms | 172.64.150.56 |
| 65 | 2026-08-11 09:59 | 639220391766674161 |
|
35 ms | 104.18.37.200 |
| 64 | 2026-08-11 09:43 | 639220382275807148 |
|
111 ms | 104.18.37.200 |
| 63 | 2026-08-11 09:43 | 639220382275807148 |
|
111 ms | 172.64.150.56 |
| 62 | 2026-08-11 09:28 | 639220373034162867 |
|
49 ms | 104.18.37.200 |
| 61 | 2026-08-11 09:28 | 639220373034162867 |
|
49 ms | 172.64.150.56 |
| 60 | 2026-08-11 09:13 | 639220363994971859 |
|
86 ms | 172.64.150.56 |
| 59 | 2026-08-11 09:13 | 639220363994971859 |
|
86 ms | 104.18.37.200 |
| 58 | 2026-08-11 08:57 | 639220354563965455 |
|
24 ms | 104.18.37.200 |
| 57 | 2026-08-11 08:57 | 639220354563965455 |
|
24 ms | 172.64.150.56 |
| 56 | 2026-08-11 08:42 | 639220345437414880 |
|
41 ms | 104.18.37.200 |
| 55 | 2026-08-11 08:42 | 639220345437414880 |
|
41 ms | 172.64.150.56 |
| 54 | 2026-08-11 08:26 | 639220336024248987 |
|
210 ms | 172.64.150.56 |
| 53 | 2026-08-11 08:26 | 639220336024248987 |
|
210 ms | 104.18.37.200 |
| 52 | 2026-08-11 07:33 | 639220304233635692 |
|
12 ms | 104.18.37.200 |
| 51 | 2026-08-11 07:33 | 639220304233635692 |
|
12 ms | 172.64.150.56 |
| 50 | 2026-08-11 07:18 | 639220294872170960 |
|
161 ms | 104.18.37.200 |
| 49 | 2026-08-11 07:18 | 639220294872170960 |
|
161 ms | 172.64.150.56 |
| 48 | 2026-08-11 07:02 | 639220285547177980 |
|
165 ms | 172.64.150.56 |
| 47 | 2026-08-11 07:02 | 639220285547177980 |
|
165 ms | 104.18.37.200 |
| 46 | 2026-08-11 06:47 | 639220276337941315 |
|
102 ms | 172.64.150.56 |
| 45 | 2026-08-11 06:47 | 639220276337941315 |
|
102 ms | 104.18.37.200 |
| 44 | 2026-08-11 06:31 | 639220267175191677 |
|
113 ms | 172.64.150.56 |
| 43 | 2026-08-11 06:31 | 639220267175191677 |
|
113 ms | 104.18.37.200 |
| 42 | 2026-08-11 06:16 | 639220257981518924 |
|
101 ms | 172.64.150.56 |
| 41 | 2026-08-11 06:16 | 639220257981518924 |
|
101 ms | 104.18.37.200 |
| 40 | 2026-08-11 06:02 | 639220249265489070 |
|
40 ms | 104.18.37.200 |
| 39 | 2026-08-11 06:02 | 639220249265489070 |
|
40 ms | 172.64.150.56 |
| 38 | 2026-08-11 05:47 | 639220240700249205 |
|
133 ms | 104.18.37.200 |
| 37 | 2026-08-11 05:47 | 639220240700249205 |
|
133 ms | 172.64.150.56 |
| 36 | 2026-08-11 05:33 | 639220231975029986 |
|
7 ms | 172.64.150.56 |
| 35 | 2026-08-11 05:33 | 639220231975029986 |
|
7 ms | 104.18.37.200 |
| 34 | 2026-08-11 05:18 | 639220223261176932 |
|
69 ms | 104.18.37.200 |
| 33 | 2026-08-11 05:18 | 639220223261176932 |
|
69 ms | 172.64.150.56 |
| 32 | 2026-08-11 05:03 | 639220214366718456 |
|
40 ms | 172.64.150.56 |
| 31 | 2026-08-11 05:03 | 639220214366718456 |
|
40 ms | 104.18.37.200 |
| 30 | 2026-08-11 04:48 | 639220205306334524 |
|
130 ms | 172.64.150.56 |
| 29 | 2026-08-11 04:48 | 639220205306334524 |
|
130 ms | 104.18.37.200 |
| 28 | 2026-08-11 03:57 | 639220174463175061 |
|
136 ms | 172.64.150.56 |
| 27 | 2026-08-11 03:57 | 639220174463175061 |
|
136 ms | 104.18.37.200 |
| 26 | 2026-08-11 03:42 | 639220165777190438 |
|
33 ms | 172.64.150.56 |
| 25 | 2026-08-11 03:42 | 639220165777190438 |
|
33 ms | 104.18.37.200 |
| 24 | 2026-08-11 03:28 | 639220156880374825 |
|
57 ms | 172.64.150.56 |
| 23 | 2026-08-11 03:28 | 639220156880374825 |
|
57 ms | 104.18.37.200 |
| 22 | 2026-08-11 03:13 | 639220148139986945 |
|
38 ms | 104.18.37.200 |
| 21 | 2026-08-11 03:13 | 639220148139986945 |
|
38 ms | 172.64.150.56 |
| 20 | 2026-08-11 02:58 | 639220139271074299 |
|
121 ms | 104.18.37.200 |
| 19 | 2026-08-11 02:58 | 639220139271074299 |
|
121 ms | 172.64.150.56 |
| 18 | 2026-08-11 02:44 | 639220130565901336 |
|
202 ms | 104.18.37.200 |
| 17 | 2026-08-11 02:44 | 639220130565901336 |
|
202 ms | 172.64.150.56 |
| 16 | 2026-08-11 02:29 | 639220121659980575 |
|
16 ms | 172.64.150.56 |
| 15 | 2026-08-11 02:29 | 639220121659980575 |
|
16 ms | 104.18.37.200 |
| 14 | 2026-08-11 02:14 | 639220112857650894 |
|
22 ms | 172.64.150.56 |
| 13 | 2026-08-11 02:14 | 639220112857650894 |
|
22 ms | 104.18.37.200 |
| 12 | 2026-08-11 01:59 | 639220103767686219 |
|
140 ms | 172.64.150.56 |
| 11 | 2026-08-11 01:59 | 639220103767686219 |
|
140 ms | 104.18.37.200 |
| 10 | 2026-08-11 01:44 | 639220094545970611 |
|
28 ms | 172.64.150.56 |
| 9 | 2026-08-11 01:44 | 639220094545970611 |
|
28 ms | 104.18.37.200 |
| 8 | 2026-08-11 01:29 | 639220085476091081 |
|
25 ms | 104.18.37.200 |
| 7 | 2026-08-11 01:29 | 639220085476091081 |
|
25 ms | 172.64.150.56 |
| 6 | 2026-08-11 01:13 | 639220076243751161 |
|
242 ms | 172.64.150.56 |
| 5 | 2026-08-11 01:13 | 639220076243751161 |
|
242 ms | 104.18.37.200 |
| 4 | 2026-08-11 00:22 | 639220045322845190 |
|
33 ms | 172.64.150.56 |
| 3 | 2026-08-11 00:22 | 639220045322845190 |
|
33 ms | 104.18.37.200 |
| 2 | 2026-08-11 00:07 | 639220036434132314 |
|
113 ms | 172.64.150.56 |
| 1 | 2026-08-11 00:07 | 639220036434132314 |
|
113 ms | 104.18.37.200 |