indexo.dev

sincere.studio

.studio user

First seen 2026-05-19 · Last seen 2026-05-19 · error 276 ms crawled 2026-06-04 5 attempts

IE · 52.49.178.228 · AS16509 Amazon.com, Inc.

Reputation 57/100 wrong cert crawl error no dmarc policy

sector tech type homepage

ssl error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for 'sincere.studio'. (_ssl.c:1000)

HTML metadata

Title
Sincere—Studio
Description
Craft-first design studio for startups — product UX, design systems, and brand identity, with hands-on front-end delivery. Based in Berlin.
Language
en
Canonical
https://sincere.studio

Open Graph

url
https://sincere.studio
title
Sincere—Studio
site name
Sincere—Studio
description
Craft-first design studio for startups — product UX, design systems, and brand identity, with hands-on front-end delivery. Based in Berlin.

Technology

Server
Apache
Analytics
  • Google Tag Manager

Third-party hosts loaded (2)

  • code.jquery.com×1
  • www.googletagmanager.com×1

Social

Contact

Email

Registration

Registrar
Gandi SAS
Created
2020-04-02
Expires
2027-04-02 295 days left
Updated
2026-03-07
Name servers
  • ns-239-c.gandi.net
  • ns-135-b.gandi.net
  • ns-131-a.gandi.net

DNS records live

NS
  • ns-131-a.gandi.net
  • ns-135-b.gandi.net
  • ns-239-c.gandi.net
MX
  • 10 spool.mail.gandi.net
  • 50 fb.mail.gandi.net
Verified for
  • Google

Email authentication weak

SPF
v=spf1 include:_mailcust.gandi.net ?all
neutral (?all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current) wrong cert

R13
from 2026-05-18 to 2026-08-16
Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://sincere.studio/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (5)

Use this data via API

Everything on this page for sincere.studio is available as JSON from the indexo.dev REST & MCP API.

curl "https://indexo.dev/api/v1/domains/sincere.studio" \
  -H "X-API-Key: idx_..."

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