HOST PROFILE
open.substack.com
FQDNRank #612,994
- First observed
- 2022-09-26 06:39:24
- Last observed
- 2026-10-14 13:09:39
- Report observations
- 2
- Unique relation edges
- 0 in / 3 out
- Reported registration
- 2010-04-27
HTTP fingerprints
Cookie attributes, response header names, and served MIME types.
Response-header names
Header names observed in responses from this host.
| Header name | First observed | Last observed | Observations |
|---|---|---|---|
| x-service | 2 | ||
| cache-control | 2 | ||
| cf-cache-status | 2 | ||
| cf-ray | 2 | ||
| x-powered-by | 2 | ||
| x-served-by | 2 | ||
| alt-svc | 2 | ||
| content-length | 2 | ||
| content-security-policy | 2 | ||
| content-type | 2 | ||
| date | 2 | ||
| location | 2 | ||
| server | 2 | ||
| set-cookie | 2 | ||
| strict-transport-security | 2 | ||
| vary | 2 | ||
| x-cluster | 2 | ||
| x-deploy | 2 | ||
| x-firefox-spdy | 1 | ||
| content-encoding | 1 | ||
| server-timing | 1 | ||
| priority | 1 |
22 shown; profile groups are bounded to 100.
MIME fingerprints
Media types served by this host.
| MIME type | First observed | Last observed | Observations |
|---|---|---|---|
| text/html | 2 | ||
| text/plain | 1 |
2 shown; profile groups are bounded to 100.