grit-oyster.co.uk

HTML metadata

Technology

Server

nginx

CMS

WordPress

Analytics

• Google Tag Manager

Third-party hosts loaded (3)

• maxcdn.bootstrapcdn.com×2
• www.googletagmanager.com×2
• gmpg.org×1

Social

• linkedin
• facebook

Registration

Registrar

Team Blue Internet Services UK Limited

Created

1999-11-18

Expires

2026-11-18 180 days left

Updated

2025-11-18

Name servers

• ns0.phase8.net.
• ns1.phase8.net.
• ns2.phase8.net.

DNS records live

NS

• ns0.phase8.net
• ns1.phase8.net
• ns2.phase8.net

MX

• 10 mail.protonmail.ch
• 20 mailsec.protonmail.ch

TXT

• protonmail-verification=5598c189cc3b38fe4fe2b86d00e285cdd7151e77

Email authentication strong

SPF

v=spf1 include:_spf.protonmail.ch ~all

softfail (~all)

DMARC

v=DMARC1; p=quarantine

policy: quarantine

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://grit-oyster.co.uk/

present

• x-content-type-options

findings

• missing HSTS
• missing Content Security Policy
• missing frame protection
• missing Referrer Policy
• missing Permissions Policy

Links to (20)

• bbc.co.uk×2
• canva.com×2
• data.gov.uk×2
• esd.org.uk×2
• facebook.com×2
• friendorfollow.com×2
• istanduk.org×2
• learndata.info×2
• legsb.gov.uk×2
• linkedin.com×2
• local.gov.uk×2
• localgovdigital.info×2
• manageflitter.com×2
• newstatesman.com×2
• open-stand.org×2
• schema.org×2
• theodi.org×2
• wikipedia.org×2
• wordpress.org×2
• www.gov.uk×2

Linked from (1)

• iuns.org×2