indexo.dev

startupheroes.io

.io crawl

First seen 2026-04-13 · Last seen 2026-05-20 · ok HTTP/1.1 200 3010 ms crawled 2026-05-07

US · 149.28.112.39 · AS20473 The Constant Company, LLC

Reputation 100/100

sector tech type homepage

HTML metadata

Title
Startup Heroes® | The startup directory for future unicorns...
Description
Search & discover early stage startups before they go big. Startup Heroes® is a startup directory showing future unicorns before they take flight
Language
en-US
Canonical
https://startupheroes.io/

Open Graph

url
https://startupheroes.io/
title
Startup Heroes® | The startup directory for future unicorns...
locale
en_US
site name
Startup Heroes
description
Search & discover early stage startups before they go big. Startup Heroes® is a startup directory showing future unicorns before they take flight

Technology

Server
nginx
CMS
WordPress
Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

Social

DNS records live

NS
  • ns1.a2hosting.com
  • ns2.a2hosting.com
  • ns3.a2hosting.com
  • ns4.a2hosting.com
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
Verified for
  • Google
  • Pinterest

Email authentication strong

SPF
v=spf1 include:_spf.google.com include:sendgrid.net include:spf.sendinblue.com mx ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine; sp=quarantine; adkim=s; aspf=s; pct=100; fo=1; rf=afrf; ri=86400; rua=mailto:support@startupheroes.io; ruf=mailto:dmarc-failures@startupheroes.io"
policy: quarantine · sp=quarantine
DKIM
Show 4 DKIM selectors
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxshxInzD5DH1iW+IgftI8QGE0kLCb+ekN5S7BG7ERq74Qa2vpOBO+7Kzt81470S/Fl4pFb4n7XHzm4…
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAml6nc6LUfmPj9VwTFS/5qdRePxu6HmHtQnjZanX4MZYN3Pmy+i17aUu7o0LcfS56qJylYPh0NvKf+o…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuTWBwhIT3Zja47jHcCmdOBEPMnvO+V4vcdCJlKr60vCKzXWGivOXATJAABFTHT9WsSzslJ/2tEneQqVEua…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwPDPObeSDo9Z2/65aF9uBOm+4UgGHi62ghfznGnV8g+oqNlhR5OlE0qmoOrl7zMSaxtWyEm1UZvT6ycm6z…
selectors probed

Certificate (current)

R12
from 2026-03-28 to 2026-06-26
Expires in 35 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://startupheroes.io/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • missing Content Security Policy
Header values
referrer-policy
strict-origin-when-cross-origin, no-referrer-when-downgrade
x-frame-options
SAMEORIGIN
permissions-policy
camera=(), microphone=(), geolocation=(), interest-cohort=()
x-content-type-options
nosniff
strict-transport-security
max-age=15552000; includeSubDomains; preload

Links to (6)

Linked from (1)