schema.org

.org toplist crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 438 ms crawled 2026-05-18

US · 216.58.198.206 · AS15169 Google LLC

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Schema.org - Schema.org
Description
Schema.org is a set of extensible schemas that enables webmasters to embed structured data on their web pages for use by search engines and other applications.
Language
en

Technology

Server
Google

Third-party hosts loaded (1)

  • ajax.googleapis.com×1

Social

Registration

Registrar
MarkMonitor Inc.
Created
2005-01-14
Expires
2027-01-14 240 days left
Updated
2025-12-18
Name servers
  • ns1.google.com
  • ns2.google.com
  • ns3.google.com
  • ns4.google.com

DNS records live

NS
  • ns1.google.com
  • ns2.google.com
  • ns3.google.com
  • ns4.google.com
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com

Email authentication strong

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; rua=mailto:mailauth-reports@google.com
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

WR2
from 2026-04-20 to 2026-07-13
Expires in 55 days

HTTP security headers

Header hygiene 30/100 Checked live page: https://schema.org/

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

Links to (2)

Linked from (16)