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sigma.ai

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First seen 2026-04-22 · Last seen 2026-05-16 · ok HTTP/1.1 200 1738 ms crawled 2026-05-16

US · 141.193.213.10 · AS209242 Cloudflare London, LLC

Reputation 100/100

Classifying

HTML metadata

Title
Sigma AI — human context to accelerate next-gen AI - Sigma AI
Description
Find and fix AI failures before they ship. Sigma provides human data annotation to test, measure, and improve generative and agentic AI — across language, culture, and context.
Language
en-US
Generator
Site Kit by Google 1.178.0
Canonical
https://sigma.ai/
Translations
  • en ×2
  • es ×2
Feeds

Open Graph

url
https://sigma.ai/
title
Sigma AI — human context to accelerate next-gen AI - Sigma AI
locale
en_US
site name
Sigma AI
description
Find and fix AI failures before they ship. Sigma provides human data annotation to test, measure, and improve generative and agentic AI — across language, culture, and context.

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Google Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Third-party hosts loaded (7)
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  • www.googletagmanager.com×4
  • fonts.gstatic.com×2
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Social

Registration

Registrar
Soluciones Corporativas IP, SL
Created
2017-12-16
Expires
2027-04-21 335 days left
Updated
2025-03-29
Name servers
  • ns1.dondominio.com
  • ns2.dondominio.com

DNS records live

NS
  • ns1.dondominio.com
  • ns2.dondominio.com
MX
  • 0 sigma-ai.mail.protection.outlook.com
Verified for
  • Atlassian
  • Microsoft 365

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:relay.mailchannels.net -all
strict (-all)
DMARC
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policy: quarantine
DKIM
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selectors probed

Certificate (current)

E8
from 2026-05-01 to 2026-07-30
Expires in 70 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 100/100 Checked live page: https://sigma.ai/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
  • cross-origin-opener-policy
  • cross-origin-embedder-policy
  • cross-origin-resource-policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN
permissions-policy
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x-content-type-options
nosniff
content-security-policy
upgrade-insecure-requests;
strict-transport-security
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cross-origin-opener-policy
unsafe-none
cross-origin-embedder-policy
unsafe-none; report-to='default'
cross-origin-resource-policy
cross-origin

Links to (2)

Linked from (1)