indexo.dev

book.io

.io crawl

First seen 2026-04-13 · Last seen 2026-05-08 · ok HTTP/1.1 200 1429 ms crawled 2026-05-06

US · 104.26.13.116 · AS13335 Cloudflare, Inc.

Reputation 97/100 dmarc monitor-only

Classifying

HTML metadata

Title
Home - Book.io
Description
Book.io is a multi-chain Web3 marketplace for ebooks and Audiobooks where anyone can collect, read, and then resell what they buy – just like print books.
Language
en-US
Generator
WordPress 6.8.2
Canonical
https://book.io/
Feeds

Open Graph

url
https://book.io/
title
Book.io
locale
en_US
site name
Book.io
description
Book.io is a multi-chain Web3 marketplace for ebooks and Audiobooks where anyone can collect, read, and then resell what they buy – just like print books.

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (5)

  • unpkg.com×3
  • www.googletagmanager.com×3
  • fonts.googleapis.com×2
  • eocampaign1.com×1
  • gmpg.org×1

Social

DNS records live

NS
  • meiling.ns.cloudflare.com
  • west.ns.cloudflare.com
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 4 TXT records
  • google-gws-recovery-domain-verification=40807313
  • google-gws-recovery-domain-verification=40824222
  • google-site-verification=39k4VTJNN84ZXmIej7vhCyFV_8f0ZOJnuy7pcfoG5HY
  • google-site-verification=7y0li3x_QlY8Fz0G8V9EoOQ72UgopEwITct_qA2RlOQ

Email authentication strong

SPF
v=spf1 include:sendgrid.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzwLVpKBfwFuotedMgyjx9y5iKT+ANZNXmCS8Q1hP5Yt8xMian65gqDLRKHKcjzfT0Qlx0nC3lhO2ZAkLWS…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuVhBg9Ty6LDT9uH7LG1v8D/MAKMIWmjbSA1+xNIsbgOqMb7bIvibQDpGf4jyF+i/OiPzTUubaKwxTyRIMF…
selectors probed

Certificate (current)

WE1
from 2026-04-25 to 2026-07-24
Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://book.io/

present
  • strict-transport-security
  • x-content-type-options
findings
  • short HSTS max-age
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff
strict-transport-security
max-age=0; includeSubDomains; preload

Links to (4)

Linked from (2)