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Rank #3,869Updated November 10, 2026

qt.io

Qt | Tools for Each Stage of Software Development Lifecycle

The site runs on HubSpot CMS, cdnjs, Cloudflare and 8 other technologies. Its email security grade is B. Its SSL certificate is issued by Let's Encrypt and is valid for 52 more days.

Domain age
—
Technologies
11
Email security
B
SSL days left
52

DNS records

TypeValueTTL
A52.18.144.2541732
MXqt-io.mail.protection.outlook.com 113600
NSns-175-a.gandi.net10800
NSns-243-b.gandi.net10800
NSns-49-c.gandi.net10800
CAAissue 0 amazontrust.com300
CAAissue 0 awstrust.com300
CAAissue 0 globalsign.com300
CAAissue 0 amazon.com300
CAAissue 0 amazonaws.com300
CAAissue 0 sectigo.com300
CAAissuewild 0 pki.goog300
CAAissue 0 digicert.com300
CAAissue 0 certainly.com300
CAAissuewild 0 entrust.com300
CAAissue 0 pki.goog300
CAAissue 0 letsencrypt.org300
TXTd358f430575bfe0c07fe7d85e526cda410800
TXTMS=ms3490503010800
TXTgoogle-site-verification=x8WScTrJ9ix9wGVVMih54OmbjQlcTb93z1HWxVZSOKo10800
TXTgoogle-site-verification=bIhnm2Ko3OmLAEP0Dqp0_aJNyJz9zj6KyJKAb1Lo-es10800
TXTadobe-idp-site-verification=5a9d3918e132584ef70084471019760d1f5fb941fe9b3ddc4a77230d2ca0796010800
TXTapple-domain-verification=GWcDIO9uyCe4GGpL10800
TXTgoogle-site-verification=XaLRKRce2ApHGZ6a8Q9VYSPgfygWOFbPYBRA8eE4Zvg10800
TXTarcules-domain-verification=92HOwpXQ4tbPBwDdib1idz8C7aQti4XGrIdVw6iaDQ310800
TXTgoogle-site-verification=dnHgPPxUI9getHLFrlO7Fpx8GY4Pd9230AELyJkvgNs10800
TXTgoogle-site-verification=d8jqwffKE2mRhvhJdZTPxD9XLjwpsYON51TAzNZZfx810800
TXTatlassian-domain-verification=KRzg78ZwrC/vsGe46xjVujbUKgaktsrwFKVMEyxTJJDtHGMYpGxcHX/pSzOGfRIO10800
TXTheroku-domain-verification=0acrf/kb66cr7//nvtsxtsgd9y25ko9anug/jektua10800

Technology stack

CDN
cdnjsCloudflare
CMS
HubSpot CMS
Cookie consent
OneTrust
Fonts
Google Fonts
JavaScript library
jQuery
Marketing automation
HubSpot
Monitoring
Sentry
Security
Content Security PolicyHSTS
Tag manager
Google Tag Manager

Analytics and advertising IDs

google_tag_manager:GTM-T2GWQM

SSL certificate

ValidValid
IssuerUS, YR1, Let's Encrypt
ExpiresJanuary 1, 2027
Days remaining52
ProtocolTLSv1.2
Namesqt.io

Email security

BScore 85/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
  • warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
  • warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
  • goodSPF record found.
  • goodSPF ends with -all: servers you have not listed are rejected (hard fail).
  • goodDMARC policy is reject: mail that fails authentication is blocked.
  • goodDMARC aggregate reports are sent to mailto:[email protected].
  • goodDKIM keys found (selector: selector1, selector2, k2, s1, s2, dkim, mandrill).
  • good1 MX record(s) found. Mail is handled by Microsoft 365.

Homepage metadata

TitleQt | Tools for Each Stage of Software Development Lifecycle
DescriptionAll the essential Qt tools for all stages of Software Development Lifecycle: planning, design, development, testing, and deployment.
Languageen
Canonicalhttps://www.qt.io
Structured dataOrganization, WebSite
IndexableYes
Word count1073

About qt.io

What technology does qt.io use?

We detected 11 technologies on qt.io, including cdnjs, Cloudflare, HubSpot CMS, OneTrust, Google Fonts, jQuery.

Does qt.io protect its email with SPF and DMARC?

qt.io scores 85/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.

What are the name servers of qt.io?

qt.io uses ns-175-a.gandi.net, ns-243-b.gandi.net, ns-49-c.gandi.net.