webmention.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 2803 ms crawled 2026-05-19

US · 173.230.155.197 · AS63949 Akamai Connected Cloud

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Webmention.io

Technology

Server
nginx

Social

DNS records live

NS
  • ns1.linode.com
  • ns2.linode.com
  • ns3.linode.com
  • ns4.linode.com
  • ns5.linode.com

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-21 to 2026-07-20
Expires in 61 days

HTTP security headers

Header hygiene 40/100 Checked live page: https://webmention.io/

present
  • x-content-type-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff

Links to (3)

Linked from (8)