indexo.dev

crgs.co.uk

.uk crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 721 ms crawled 2026-05-30

IE · 34.248.224.29 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

sector education type homepage

HTML metadata

Title
Welcome to Colchester Royal Grammar School
Description
Named East Anglia State School of the Decade by The Sunday Times in 2021, CRGS is a selective day school for boys aged 11 – 18 years and co-educational in the Sixth Form. It is one of very few state boarding schools, with a family-style boarding house designed for 30 Sixth Form students. Founded in 1206 and granted two Royal Charters, by Henry VIII in 1539 and by Elizabeth I in 1584, it has a history of scholarship dating back to the sixteenth century. ‘Pupils say school is a safe and enjoyable place to be’ (Ofsted, Feb 2022) and central to the ethos of our school are the core values: Compassion, Respect, Generosity and Support.
Language
en

Technology

Server
nginx
jQuery
1.9.0 known XSS (<3.5)
Stack
PHP

Third-party hosts loaded (4)

  • 0e58658be539ee7325a0-220f04f871df648cf4a4d93a111e3366.ssl.cf3.rackcdn.com×10
  • c1008054.ssl.cf3.rackcdn.com×6
  • ajax.googleapis.com×1
  • maxcdn.bootstrapcdn.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns0.phase8.net
  • ns1.phase8.net
  • ns2.phase8.net
MX
  • 1 crgs-co-uk.mail.protection.outlook.com
Verified for
  • Adobe
  • Apple

Email authentication weak

SPF
v=spf1 ip4:217.137.155.130 include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQClh7+P1WLvANqmdLYE5NSh5wiAMLqXHvRsU2IKHG5LE9WaAb4xr6e2ePQZ/RnTRmFV9vN1Dt5xlguckEarzO…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAud1x5mbUm2BgIjQJOzo/u4CRFGgvs0BQgGuml0p8Kk9Of4dUYyy5FLqlfs1ujsQtoR6+bp3I3Ib4dS6e5S…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz7R5vJCi7yUkTK+Ijq+7oUAJgUUaQmULRxLoemTVSLW4r8Tv/jrmpMMjq84p4IbkGvR8aZhJHrRorM9+XN…
selectors probed

Certificate (current)

R13
from 2026-05-12 to 2026-08-10
Expires in 65 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.crgs.co.uk/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing Content Security Policy
  • weak frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN, SAMEORIGIN
x-content-type-options
nosniff
strict-transport-security
max-age=63072000; includeSubDomains; preload

Links to (7)

Linked from (1)

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