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Tech stack of Welcome to GOV.UK (gov.uk)

https://www.gov.uk/

Welcome to GOV.UK

Cached · Oct 21, 2026

Re-scan

5Technologies

5Categories

200HTTP Status

428msScan Time

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AI builder check

No AI builder evidence found

No evidence

None of the 33 fingerprints we track for 9 AI app builders (Lovable, Bolt.new, v0, Replit, Base44, Manus, Anything, Emergent and YouWare) appear on this page. That is not proof the site was coded by hand: code written with AI assistants such as Cursor, Claude Code or GitHub Copilot leaves no public trace, and builder markers can be removed after an export.

This check names the builder platform from public evidence. It does not measure how much of the code was written by AI. How the check works and how accurate it is

Detected technologies (5)

Nginx

High-performance HTTP server and reverse proxy

Server

95%

confidence

Evidence (1 signal)

Header

Server header contains "nginx"

nginx

Ruby on Rails

Server-side web application framework in Ruby

Framework

90%

confidence

Evidence (1 signal)

Html Pattern

Rails UJS/Turbo markers

csrf-param

Fastly

Edge cloud platform and CDN

CDN

90%

confidence

Evidence (1 signal)

Header

Fastly cache server header

cache-bfi

UIkit

Lightweight modular front-end framework

UI Library

85%

confidence

Evidence (1 signal)

Html Pattern

UIkit attribute/class prefixes

uk-grid

Ruby

Dynamic, reflective, object-oriented language

Language Implied

63%

confidence

Evidence (1 signal)

Implied

Implied by Ruby on Rails

Detected Ruby on Rails → implies Ruby

Website details

Network & TLS

IP address151.101.20.144

All resolved IPs151.101.20.144, 2a04:4e42:5::144

ProtocolHTTP/1.1

TLS issuerGlobalSign nv-sa

Cert. expires Dec 28, 2026 68 days

DNS records

Nameserversdns1.nic.uk dns2.nic.uk dns3.nic.uk dns4.nic.uk nsa.nic.uk nsb.nic.uk

CNAMEwww-cdn.production.govuk.service.gov.uk

Security headers 6/6

strict-transport-securityPresent

content-security-policyPresent

x-content-type-optionsPresent

x-frame-optionsPresent

referrer-policyPresent

permissions-policyPresent

Page insights

LanguageEN

HTML size84 KB (br)

Resources7 scripts · 2 stylesheets · 4 images

Third-party hosts1 www.smartsurvey.co.uk

Open GraphPresent

Redirect chain

1. HTTP 301 https://gov.uk

2. HTTP 200 https://www.gov.uk/

Raw HTTP Headers

connection keep-alive

content-length 11260

content-type text/html; charset=utf-8

server nginx

cache-control max-age=300, public

content-security-policy default-src 'self'; base-uri 'none'; script-src 'self' www.google-analytics.com ssl.google-analytics.com stats.g.doubleclick.net www.googletagmanager.com www.region1.google-analytics.com region1.google-analytics.com www.google.co.uk analytics.google.com *.analytics.google.com www.google.com www.gsta

etag W/"3dcbe82fa13ed2bded3ee12e3940f744"

link </assets/frontend/views/_homepage-4b78ffd85484b305e392c489eec8af4fc215bd086f63d464f44372f72ad6d92b.css>; rel=preload; as=style; nopush,</assets/frontend/govuk_publishing_components/vendor/lux/lux-measurer-d66192b1b665d415e1874e49a48138b7ae339548aa6cdb8687c7f9933e72b969.js>; rel=preload; as=script; n

permissions-policy interest-cohort=()

referrer-policy strict-origin-when-cross-origin

via 1.1 router, 1.1 varnish

x-content-type-options nosniff

x-frame-options SAMEORIGIN

x-permitted-cross-domain-policies none

x-request-id 028525d2-f954-4a0d-b6ab-abee5b1e9bba

x-runtime 0.022845

x-xss-protection 0

fastly-backend-name origin

content-encoding br

accept-ranges bytes