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 2026-08-19. For this date, NameServerHistory found 150 DNS check records, 150 successful responses, 0 failed responses, and 106 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
150
Historical checks stored for this nameserver on selected date
Average Latency
106 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
172.64.150.56
Most recently resolved hosting IP on selected date
Successful Responses
150
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 www.substack.com
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 |
|---|---|---|---|---|---|
| 150 | 2026-08-19 23:55 | 639227805445376839 |
|
66 ms | 172.64.150.56 |
| 149 | 2026-08-19 23:55 | 639227805445376839 |
|
66 ms | 104.18.37.200 |
| 148 | 2026-08-19 23:39 | 639227795899225951 |
|
39 ms | 172.64.150.56 |
| 147 | 2026-08-19 23:39 | 639227795899225951 |
|
39 ms | 104.18.37.200 |
| 146 | 2026-08-19 23:23 | 639227786351762008 |
|
4 ms | 172.64.150.56 |
| 145 | 2026-08-19 23:23 | 639227786351762008 |
|
4 ms | 104.18.37.200 |
| 144 | 2026-08-19 23:07 | 639227776640591733 |
|
58 ms | 172.64.150.56 |
| 143 | 2026-08-19 23:07 | 639227776640591733 |
|
58 ms | 104.18.37.200 |
| 142 | 2026-08-19 22:51 | 639227767128841282 |
|
152 ms | 172.64.150.56 |
| 141 | 2026-08-19 22:51 | 639227767128841282 |
|
152 ms | 104.18.37.200 |
| 140 | 2026-08-19 22:35 | 639227757477304711 |
|
167 ms | 104.18.37.200 |
| 139 | 2026-08-19 22:35 | 639227757477304711 |
|
167 ms | 172.64.150.56 |
| 138 | 2026-08-19 22:19 | 639227747572098014 |
|
18 ms | 104.18.37.200 |
| 137 | 2026-08-19 22:19 | 639227747572098014 |
|
18 ms | 172.64.150.56 |
| 136 | 2026-08-19 22:02 | 639227737588613113 |
|
214 ms | 172.64.150.56 |
| 135 | 2026-08-19 22:02 | 639227737588613113 |
|
214 ms | 104.18.37.200 |
| 134 | 2026-08-19 21:10 | 639227706134603955 |
|
20 ms | 104.18.37.200 |
| 133 | 2026-08-19 21:10 | 639227706134603955 |
|
20 ms | 172.64.150.56 |
| 132 | 2026-08-19 20:54 | 639227696589027396 |
|
12 ms | 104.18.37.200 |
| 131 | 2026-08-19 20:54 | 639227696589027396 |
|
12 ms | 172.64.150.56 |
| 130 | 2026-08-19 20:38 | 639227687097707639 |
|
19 ms | 172.64.150.56 |
| 129 | 2026-08-19 20:38 | 639227687097707639 |
|
19 ms | 104.18.37.200 |
| 128 | 2026-08-19 20:22 | 639227677474464487 |
|
151 ms | 172.64.150.56 |
| 127 | 2026-08-19 20:22 | 639227677474464487 |
|
151 ms | 104.18.37.200 |
| 126 | 2026-08-19 20:06 | 639227667767441118 |
|
61 ms | 104.18.37.200 |
| 125 | 2026-08-19 20:06 | 639227667767441118 |
|
61 ms | 172.64.150.56 |
| 124 | 2026-08-19 19:49 | 639227657984833832 |
|
68 ms | 104.18.37.200 |
| 123 | 2026-08-19 19:49 | 639227657984833832 |
|
68 ms | 172.64.150.56 |
| 122 | 2026-08-19 19:33 | 639227648079992640 |
|
48 ms | 104.18.37.200 |
| 121 | 2026-08-19 19:33 | 639227648079992640 |
|
48 ms | 172.64.150.56 |
| 120 | 2026-08-19 19:16 | 639227638125048441 |
|
106 ms | 104.18.37.200 |
| 119 | 2026-08-19 19:16 | 639227638125048441 |
|
106 ms | 172.64.150.56 |
| 118 | 2026-08-19 19:00 | 639227628211392142 |
|
62 ms | 172.64.150.56 |
| 117 | 2026-08-19 19:00 | 639227628211392142 |
|
62 ms | 104.18.37.200 |
| 116 | 2026-08-19 18:43 | 639227618261696275 |
|
130 ms | 104.18.37.200 |
| 115 | 2026-08-19 18:43 | 639227618261696275 |
|
130 ms | 172.64.150.56 |
| 114 | 2026-08-19 18:27 | 639227608366233645 |
|
12 ms | 104.18.37.200 |
| 113 | 2026-08-19 18:27 | 639227608366233645 |
|
12 ms | 172.64.150.56 |
| 112 | 2026-08-19 18:10 | 639227598301787588 |
|
184 ms | 104.18.37.200 |
| 111 | 2026-08-19 18:10 | 639227598301787588 |
|
184 ms | 172.64.150.56 |
| 110 | 2026-08-19 17:17 | 639227566241010716 |
|
47 ms | 104.18.37.200 |
| 109 | 2026-08-19 17:17 | 639227566241010716 |
|
47 ms | 172.64.150.56 |
| 108 | 2026-08-19 17:00 | 639227556454538959 |
|
11 ms | 104.18.37.200 |
| 107 | 2026-08-19 17:00 | 639227556454538959 |
|
11 ms | 172.64.150.56 |
| 106 | 2026-08-19 16:44 | 639227546640305542 |
|
19 ms | 104.18.37.200 |
| 105 | 2026-08-19 16:44 | 639227546640305542 |
|
19 ms | 172.64.150.56 |
| 104 | 2026-08-19 16:28 | 639227536965466472 |
|
17 ms | 172.64.150.56 |
| 103 | 2026-08-19 16:28 | 639227536965466472 |
|
17 ms | 104.18.37.200 |
| 102 | 2026-08-19 16:11 | 639227527048658280 |
|
38 ms | 172.64.150.56 |
| 101 | 2026-08-19 16:11 | 639227527048658280 |
|
38 ms | 104.18.37.200 |
| 100 | 2026-08-19 15:55 | 639227517386634438 |
|
68 ms | 172.64.150.56 |
| 99 | 2026-08-19 15:55 | 639227517386634438 |
|
68 ms | 104.18.37.200 |
| 98 | 2026-08-19 15:39 | 639227507459551637 |
|
82 ms | 104.18.37.200 |
| 97 | 2026-08-19 15:39 | 639227507459551637 |
|
82 ms | 172.64.150.56 |
| 96 | 2026-08-19 15:22 | 639227497515595277 |
|
7 ms | 104.18.37.200 |
| 95 | 2026-08-19 15:22 | 639227497515595277 |
|
7 ms | 172.64.150.56 |
| 94 | 2026-08-19 15:05 | 639227487441798036 |
|
7 ms | 104.18.37.200 |
| 93 | 2026-08-19 15:05 | 639227487441798036 |
|
7 ms | 172.64.150.56 |
| 92 | 2026-08-19 14:49 | 639227477445551863 |
|
235 ms | 104.18.37.200 |
| 91 | 2026-08-19 14:49 | 639227477445551863 |
|
235 ms | 172.64.150.56 |
| 90 | 2026-08-19 14:32 | 639227467297067891 |
|
25 ms | 172.64.150.56 |
| 89 | 2026-08-19 14:32 | 639227467297067891 |
|
25 ms | 104.18.37.200 |
| 88 | 2026-08-19 14:15 | 639227457057795635 |
|
288 ms | 172.64.150.56 |
| 87 | 2026-08-19 14:15 | 639227457057795635 |
|
288 ms | 104.18.37.200 |
| 86 | 2026-08-19 13:22 | 639227425244777397 |
|
27 ms | 104.18.37.200 |
| 85 | 2026-08-19 13:22 | 639227425244777397 |
|
27 ms | 172.64.150.56 |
| 84 | 2026-08-19 13:05 | 639227415422116485 |
|
25 ms | 172.64.150.56 |
| 83 | 2026-08-19 13:05 | 639227415422116485 |
|
25 ms | 104.18.37.200 |
| 82 | 2026-08-19 12:48 | 639227405307256053 |
|
43 ms | 172.64.150.56 |
| 81 | 2026-08-19 12:48 | 639227405307256053 |
|
43 ms | 104.18.37.200 |
| 80 | 2026-08-19 12:32 | 639227395396602630 |
|
35 ms | 104.18.37.200 |
| 79 | 2026-08-19 12:32 | 639227395396602630 |
|
35 ms | 172.64.150.56 |
| 78 | 2026-08-19 12:15 | 639227385510363611 |
|
166 ms | 104.18.37.200 |
| 77 | 2026-08-19 12:15 | 639227385510363611 |
|
166 ms | 172.64.150.56 |
| 76 | 2026-08-19 11:59 | 639227375508324850 |
|
72 ms | 172.64.150.56 |
| 75 | 2026-08-19 11:59 | 639227375508324850 |
|
72 ms | 104.18.37.200 |
| 74 | 2026-08-19 11:42 | 639227365326611906 |
|
64 ms | 104.18.37.200 |
| 73 | 2026-08-19 11:42 | 639227365326611906 |
|
64 ms | 172.64.150.56 |
| 72 | 2026-08-19 11:25 | 639227355360014208 |
|
23 ms | 172.64.150.56 |
| 71 | 2026-08-19 11:25 | 639227355360014208 |
|
23 ms | 104.18.37.200 |
| 70 | 2026-08-19 11:08 | 639227345036782165 |
|
32 ms | 172.64.150.56 |
| 69 | 2026-08-19 11:08 | 639227345036782165 |
|
32 ms | 104.18.37.200 |
| 68 | 2026-08-19 10:51 | 639227334992964533 |
|
11 ms | 172.64.150.56 |
| 67 | 2026-08-19 10:51 | 639227334992964533 |
|
11 ms | 104.18.37.200 |
| 66 | 2026-08-19 10:34 | 639227324986605572 |
|
13 ms | 104.18.37.200 |
| 65 | 2026-08-19 10:34 | 639227324986605572 |
|
13 ms | 172.64.150.56 |
| 64 | 2026-08-19 10:18 | 639227314928414539 |
|
525 ms | 172.64.150.56 |
| 63 | 2026-08-19 10:18 | 639227314928414539 |
|
525 ms | 104.18.37.200 |
| 62 | 2026-08-19 09:25 | 639227283029182134 |
|
87 ms | 172.64.150.56 |
| 61 | 2026-08-19 09:25 | 639227283029182134 |
|
87 ms | 104.18.37.200 |
| 60 | 2026-08-19 09:08 | 639227273294779350 |
|
27 ms | 104.18.37.200 |
| 59 | 2026-08-19 09:08 | 639227273294779350 |
|
27 ms | 172.64.150.56 |
| 58 | 2026-08-19 08:52 | 639227263525231313 |
|
39 ms | 104.18.37.200 |
| 57 | 2026-08-19 08:52 | 639227263525231313 |
|
39 ms | 172.64.150.56 |
| 56 | 2026-08-19 08:36 | 639227253578313363 |
|
2058 ms | 104.18.37.200 |
| 55 | 2026-08-19 08:36 | 639227253578313363 |
|
2058 ms | 172.64.150.56 |
| 54 | 2026-08-19 08:19 | 639227243649973322 |
|
8 ms | 104.18.37.200 |
| 53 | 2026-08-19 08:19 | 639227243649973322 |
|
8 ms | 172.64.150.56 |
| 52 | 2026-08-19 08:02 | 639227233581059317 |
|
151 ms | 172.64.150.56 |
| 51 | 2026-08-19 08:02 | 639227233581059317 |
|
151 ms | 104.18.37.200 |
| 50 | 2026-08-19 07:46 | 639227223667352067 |
|
29 ms | 172.64.150.56 |
| 49 | 2026-08-19 07:46 | 639227223667352067 |
|
29 ms | 104.18.37.200 |
| 48 | 2026-08-19 07:29 | 639227213714837066 |
|
21 ms | 172.64.150.56 |
| 47 | 2026-08-19 07:29 | 639227213714837066 |
|
21 ms | 104.18.37.200 |
| 46 | 2026-08-19 07:12 | 639227203701208496 |
|
240 ms | 104.18.37.200 |
| 45 | 2026-08-19 07:12 | 639227203701208496 |
|
240 ms | 172.64.150.56 |
| 44 | 2026-08-19 06:56 | 639227193643202179 |
|
22 ms | 104.18.37.200 |
| 43 | 2026-08-19 06:56 | 639227193643202179 |
|
22 ms | 172.64.150.56 |
| 42 | 2026-08-19 06:39 | 639227183584431597 |
|
32 ms | 104.18.37.200 |
| 41 | 2026-08-19 06:39 | 639227183584431597 |
|
32 ms | 172.64.150.56 |
| 40 | 2026-08-19 06:22 | 639227173347403088 |
|
175 ms | 104.18.37.200 |
| 39 | 2026-08-19 06:22 | 639227173347403088 |
|
175 ms | 172.64.150.56 |
| 38 | 2026-08-19 05:29 | 639227141523007601 |
|
37 ms | 172.64.150.56 |
| 37 | 2026-08-19 05:29 | 639227141523007601 |
|
37 ms | 104.18.37.200 |
| 36 | 2026-08-19 05:12 | 639227131785931574 |
|
19 ms | 104.18.37.200 |
| 35 | 2026-08-19 05:12 | 639227131785931574 |
|
19 ms | 172.64.150.56 |
| 34 | 2026-08-19 04:56 | 639227122176475389 |
|
8 ms | 104.18.37.200 |
| 33 | 2026-08-19 04:56 | 639227122176475389 |
|
8 ms | 172.64.150.56 |
| 32 | 2026-08-19 04:41 | 639227112668934596 |
|
24 ms | 172.64.150.56 |
| 31 | 2026-08-19 04:41 | 639227112668934596 |
|
24 ms | 104.18.37.200 |
| 30 | 2026-08-19 04:24 | 639227102773292788 |
|
51 ms | 172.64.150.56 |
| 29 | 2026-08-19 04:24 | 639227102773292788 |
|
51 ms | 104.18.37.200 |
| 28 | 2026-08-19 04:08 | 639227093141136930 |
|
91 ms | 104.18.37.200 |
| 27 | 2026-08-19 04:08 | 639227093141136930 |
|
91 ms | 172.64.150.56 |
| 26 | 2026-08-19 03:52 | 639227083449420147 |
|
150 ms | 104.18.37.200 |
| 25 | 2026-08-19 03:52 | 639227083449420147 |
|
150 ms | 172.64.150.56 |
| 24 | 2026-08-19 03:36 | 639227073771748493 |
|
24 ms | 104.18.37.200 |
| 23 | 2026-08-19 03:36 | 639227073771748493 |
|
24 ms | 172.64.150.56 |
| 22 | 2026-08-19 03:19 | 639227063977347614 |
|
39 ms | 172.64.150.56 |
| 21 | 2026-08-19 03:19 | 639227063977347614 |
|
39 ms | 104.18.37.200 |
| 20 | 2026-08-19 03:03 | 639227054253519024 |
|
86 ms | 104.18.37.200 |
| 19 | 2026-08-19 03:03 | 639227054253519024 |
|
86 ms | 172.64.150.56 |
| 18 | 2026-08-19 02:47 | 639227044381963886 |
|
26 ms | 172.64.150.56 |
| 17 | 2026-08-19 02:47 | 639227044381963886 |
|
26 ms | 104.18.37.200 |
| 16 | 2026-08-19 02:30 | 639227034441085514 |
|
246 ms | 172.64.150.56 |
| 15 | 2026-08-19 02:30 | 639227034441085514 |
|
246 ms | 104.18.37.200 |
| 14 | 2026-08-19 01:38 | 639227003126489968 |
|
173 ms | 172.64.150.56 |
| 13 | 2026-08-19 01:38 | 639227003126489968 |
|
173 ms | 104.18.37.200 |
| 12 | 2026-08-19 01:22 | 639226993456311614 |
|
34 ms | 172.64.150.56 |
| 11 | 2026-08-19 01:22 | 639226993456311614 |
|
34 ms | 104.18.37.200 |
| 10 | 2026-08-19 01:06 | 639226983847312345 |
|
134 ms | 104.18.37.200 |
| 9 | 2026-08-19 01:06 | 639226983847312345 |
|
134 ms | 172.64.150.56 |
| 8 | 2026-08-19 00:50 | 639226974357874853 |
|
35 ms | 172.64.150.56 |
| 7 | 2026-08-19 00:50 | 639226974357874853 |
|
35 ms | 104.18.37.200 |
| 6 | 2026-08-19 00:34 | 639226964670484721 |
|
212 ms | 172.64.150.56 |
| 5 | 2026-08-19 00:34 | 639226964670484721 |
|
212 ms | 104.18.37.200 |
| 4 | 2026-08-19 00:18 | 639226954857899696 |
|
190 ms | 172.64.150.56 |
| 3 | 2026-08-19 00:18 | 639226954857899696 |
|
190 ms | 104.18.37.200 |
| 2 | 2026-08-19 00:01 | 639226945091603488 |
|
7 ms | 172.64.150.56 |
| 1 | 2026-08-19 00:01 | 639226945091603488 |
|
7 ms | 104.18.37.200 |