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Gridlode
Rank #7,109Updated November 10, 2026

jwt.io

JSON Web Tokens - jwt.io

The site runs on Next.js, React, Auth0 and 6 other technologies. Its email security grade is B. Its SSL certificate is issued by Google Trust Services and is valid for 48 more days.

Domain age
—
Technologies
9
Email security
B
SSL days left
48

DNS records

TypeValueTTL
A104.18.32.191300
A172.64.155.65300
MXmxa-00553301.gslb.pphosted.com 103600
MXmxb-00553301.gslb.pphosted.com 103600
NScarrera.ns.cloudflare.com86400
NSjaime.ns.cloudflare.com86400
TXTgoogle-site-verification=GQkcab37IZnqQ2FOiFUhF6lnnPJNsLS3UHmpnXG8Qh4300
TXTv=spf1 -all300
AAAA2a06:98c1:3101::ac40:9b41300
AAAA2a06:98c1:310b::6812:20bf300

Technology stack

Authentication
Auth0
CDN
Cloudflare
Cookie consent
OneTrust
Hosting
Vercel
JavaScript framework
Next.jsReact
Programming language
Node.js
Security
HSTS
Tag manager
Adobe Experience Platform Tags

SSL certificate

ValidValid
IssuerUS, WE1, Google Trust Services
ExpiresDecember 28, 2026
Days remaining48
ProtocolTLSv1.3
Namesjwt.io, *.jwt.io

Email security

BScore 87/100 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.
  • 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].
  • goodSPF says this domain sends no email, so DKIM signing is not needed.
  • good2 MX record(s) found. Mail is handled by Proofpoint.

Homepage metadata

TitleJSON Web Tokens - jwt.io
DescriptionJSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).
Languageen
Canonicalhttps://jwt.io
Structured dataWebSite, BreadcrumbList
IndexableYes
Word count442

About jwt.io

What technology does jwt.io use?

We detected 9 technologies on jwt.io, including Auth0, Cloudflare, OneTrust, Vercel, Next.js, React.

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

jwt.io scores 87/100 (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 jwt.io?

jwt.io uses carrera.ns.cloudflare.com, jaime.ns.cloudflare.com.