indexo.dev

castalialibrary.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 5276 ms crawled 2026-05-18

US · 3.231.35.217 · AS14618 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Castalia Library | Substack
Description
The world's most beautiful books presented in series of deluxe leather editions. Click to read Castalia Library, a Substack publication with thousands of subscribers.
Language
en
Canonical
https://stack.castalialibrary.com/
Feeds

Open Graph

url
https://stack.castalialibrary.com/
title
Castalia Library | Substack
description
The world's most beautiful books presented in series of deluxe leather editions. Click to read Castalia Library, a Substack publication with thousands of subscribers.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • substackcdn.com×268
  • fonts.gstatic.com×1
  • js.sentry-cdn.com×1
  • static.cloudflareinsights.com×1

Social

Registration

Registrar
Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
Created
2020-02-07
Expires
2027-02-07 263 days left
Updated
2026-02-08
Name servers
  • ns.hostpoint.ch
  • ns2.hostpoint.ch
  • ns3.hostpoint.ch

DNS records live

NS
  • ns.hostpoint.ch
  • ns2.hostpoint.ch
  • ns3.hostpoint.ch
MX
  • 10 mx1.mail.hostpoint.ch
  • 10 mx2.mail.hostpoint.ch
TXT
  • protonmail-verification=048d06379f8ba77b030c303a0d575499d790360c

Email authentication partial

SPF
v=spf1 include:eu.zcsend.net redirect=spf.mail.hostpoint.ch
no all qualifier
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-04-26 to 2026-07-25
Expires in 67 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://stack.castalialibrary.com/

present
  • strict-transport-security
  • content-security-policy
findings
  • CSP uses wildcard sources
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
content-security-policy
frame-ancestors 'self' https://*.substack.com https://substack.com
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (7)

Linked from (2)

See all sites whose homepage links to castalialibrary.com →