indexo.dev

flagsmith.com

.com crawl

First seen 2026-04-12 · Last seen 2026-06-04 · ok HTTP/1.1 200 764 ms crawled 2026-06-04

US · 198.202.211.1 · AS209242 Cloudflare London, LLC

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Flagsmith - Open Source Feature Flag Service
Description
Flagsmith makes it easy to create and manage feature flags. Roll out, segment, and optimise. Stay secure with on-premise and private cloud hosting.
Language
en
Generator
Webflow
Canonical
https://www.flagsmith.com

Open Graph

url
https://www.flagsmith.com
title
Flagsmith - Open Source Feature Flag Service
description
Flagsmith makes it easy to create and manage feature flags. Roll out, segment, and optimise. Stay secure with on-premise and private cloud hosting.

Technology

CDN
Cloudflare
CMS
Gatsby
jQuery
3.5.1
Analytics
  • Amplitude
  • Google Tag Manager
Third-party hosts loaded (10)
  • cdn.prod.website-files.com×90
  • cdn.amplitude.com×2
  • cdn.jsdelivr.net×2
  • cdn.firstpromoter.com×1
  • d3e54v103j8qbb.cloudfront.net×1
  • hubspotonwebflow.com×1
  • js-eu1.hs-scripts.com×1
  • js-eu1.hsforms.net×1
  • px.ads.linkedin.com×1
  • www.googletagmanager.com×1

Social

Contact

Phone
Address
4th Floor, 86-90 Paul Street, EC2A 4NE, London, London, UK

Registration

Registrar
NameCheap, Inc.
Created
2018-03-01
Expires
2029-03-01 1000 days left
Updated
2023-12-01
Name servers
  • ns-1401.awsdns-47.org
  • ns-1757.awsdns-27.co.uk
  • ns-47.awsdns-05.com
  • ns-864.awsdns-44.net

DNS records live

NS
  • ns-1401.awsdns-47.org
  • ns-1757.awsdns-27.co.uk
  • ns-47.awsdns-05.com
  • ns-864.awsdns-44.net
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • b8c71f43-ebf3-4650-a1c7-0e8b23d26aab
  • MS=A194E44A8CB308EEDBA76DA741178CC8E1A54F88

Email authentication partial

SPF
v=spf1 a mx include:_spf.mlsend.com include:143451822.spf05.hubspotemail.net include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc-reports@flagsmith.com
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCSGtZXz8m6n8GQtzRxntMYWCtV0yS2x/G772NxGRG8yafModnbgdfYCde5xUU1Hf1kJw2aNX+V4+ASj6KzNj…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9YSRvItCaNJ/FjCrd4EVM3nssv2vBZHmbpg44LOuSrKUnvP6MPJE889IQW/fpVBlr+qgZ/St4m0XF/v8cX…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDvA5HBsLfXj8GVdAHGVkHzVX5JyeNwSsubsNv/PyspCv7lmeAMHGqIHZ+XSQd2lmRPyh9yCNpbTA6etDx3vSYnD/…
selectors probed

Certificate (current)

WE1
from 2026-05-19 to 2026-08-17
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://www.flagsmith.com/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
findings
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
content-security-policy
frame-ancestors 'self'
strict-transport-security
max-age=31536000

Links to (3)

Linked from (2)