indexo.dev

rss3.io

.io crawl

First seen 2026-04-13 · Last seen 2026-05-16 · ok HTTP/1.1 200 973 ms crawled 2026-05-07

US · 185.199.108.153 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
RSS3
Description
RSS3 builds products and infrastructure for a more readable open web.
Language
en

Technology

CDN
Fastly
Server
GitHub.com
CMS
Next.js

Social

Contact

Email

DNS records live

NS
  • gloria.ns.cloudflare.com
  • grant.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
  • openai-domain-verification=dv-Kazj1sbVC2sZczcp5ha85FcA
  • d08c5cc3-6de3-415d-9c20-79b4c3c4cc8d=e6770b7d92dcf05465a0b68eac71f33abdeb4699ac28238254c0e4012cac85ec
  • google-site-verification=EG7P0iwDyxF5eP-3LwR8XV2T-nTf62YhVvudYWqEYqE
  • google-site-verification=Z9L8UQdFIzJL3Vhyen4O0dS9veMtMTQFDlguarmdYfI

Email authentication strong

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; rua=mailto:contact@rss3.io; pct=100; adkim=s; aspf=s
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-21 to 2026-07-20
Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://rss3.io/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (3)

Linked from (3)