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Rank #2,806Updated November 10, 2026

spring.io

The site runs on Gatsby, React, Cloudflare Web Analytics and 4 other technologies. Its email security grade is C. Its SSL certificate is issued by DigiCert Inc and is valid for 138 more days.

Domain age
—
Technologies
7
Email security
C
SSL days left
138

DNS records

TypeValueTTL
A104.18.42.155300
A172.64.145.101300
MXisaac.mx.cloudflare.net 13300
MXamir.mx.cloudflare.net 80300
MXlinda.mx.cloudflare.net 90300
NSmary.ns.cloudflare.com86400
NStheo.ns.cloudflare.com86400
CAAiodef 0 mailto:[email protected]300
CAAissue 0 comodoca.com300
CAAissue 0 digicert.com; cansignhttpexchanges=yes300
CAAissue 0 letsencrypt.org300
CAAissue 0 pki.goog; cansignhttpexchanges=yes300
CAAissue 0 sectigo.com300
CAAissue 0 ssl.com300
CAAissuewild 0 comodoca.com300
CAAissuewild 0 digicert.com; cansignhttpexchanges=yes300
CAAissuewild 0 letsencrypt.org300
CAAissuewild 0 pki.goog; cansignhttpexchanges=yes300
CAAissuewild 0 sectigo.com300
TXTMS=ms74802145300
TXT_2lhhx1n7scjz1xgskk4v39c267cpquk300
TXT_5a74j9ke3dsyatll2e2q3sz7zcof6kv300
TXT_8bf4m05zgllzh6kpmbdw29k8s51faur300
TXT_ng92d6yb9n8jfhfjkgaixcyflt73g28300
TXTe601f6cfb729414088b22175584eb026300
TXTlrcgkxfxkbx4r60sz8kxghxpv8n04mhs300
TXTCFE5-A8BB-39C8-811C-275E-359B-7D50-A9A2300
TXTv=spf1 include:_spf.mx.cloudflare.net -all300
TXTstatus-page-domain-verification=64j92k6cfs22300
TXTgoogle-site-verification=YSdDbpdDobwxE01DfU6-38UABqxNWafTc6vk-Df_mnk300
TXTgoogle-site-verification=Z9wK7ueF-FuImFwV628x5gnY-FfL7jNaIVnGcMobeyY300
AAAA2606:4700:4409::ac40:9165184
AAAA2a06:98c1:3100::6812:2a9b184

Technology stack

Analytics
Cloudflare Web Analytics
CDN
Cloudflare
Cookie consent
OneTrust
JavaScript framework
GatsbyReact
Security
HSTS
Tag manager
Google Tag Manager

Analytics and advertising IDs

google_tag_manager:GTM-W8CQ8TL

Other sites using the same IDs: springsource.org

SSL certificate

ValidValid
IssuerUS, DigiCert Global G2 TLS RSA SHA256 2020 CA1, DigiCert Inc
ExpiresMarch 28, 2027
Days remaining138
ProtocolTLSv1.3
Names*.spring.io, spring.io, *.enterprise.spring.io

Email security

CScore 70/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
  • 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].
  • good3 MX record(s) found. Mail is handled by Cloudflare Email Routing.

Homepage metadata

IndexableYes
Word count651

About spring.io

What technology does spring.io use?

We detected 7 technologies on spring.io, including Cloudflare Web Analytics, Cloudflare, OneTrust, Gatsby, React, HSTS.

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

spring.io scores 70/100 (grade C) for email security. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.

What are the name servers of spring.io?

spring.io uses mary.ns.cloudflare.com, theo.ns.cloudflare.com.