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82
Total
100
DNS
50
Email
81
Security
70
Network
100
Availability
Domainspringsource.org
IPv42
IPv62
MX records0
StatusActive
Domain technical report

Spring | Home

springsource.org

Level up your Java code and explore what Spring can do for you.

Generated: 2026-08-09T11:30:40-05:00 · Cached result

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IPv42
IPv62
MX0
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

!
MX records0 / 20 pts · Mail

0 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

33 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
172.64.152.190
104.18.35.66

AAAA

2 record(s)
2a06:98c1:310b::ac40:98be
2a06:98c1:310d::6812:2342

CNAME

0 record(s)
—

Not configured

MX

0 record(s)
—

Not configured

TXT

1 record(s)
"v=spf1 -all"

NS

2 record(s)
theo.ns.cloudflare.com.
mary.ns.cloudflare.com.

SOA

1 record(s)
mary.ns.cloudflare.com. dns.cloudflare.com. 2409890188 10000 2400 604800 1800

CAA

13 record(s)
0 issuewild "pki.goog; cansignhttpexchanges=yes"
0 issue "comodoca.com"
0 issue "letsencrypt.org"
0 iodef "mailto:pvtl-spring-sysadmin@vmware.com"
0 issuewild "ssl.com"
0 issuewild "letsencrypt.org"
0 issue "ssl.com"
0 issue "sectigo.com"
0 issuewild "sectigo.com"
0 issuewild "comodoca.com"
0 issuewild "digicert.com; cansignhttpexchanges=yes"
0 issue "pki.goog; cansignhttpexchanges=yes"
0 issue "digicert.com; cansignhttpexchanges=yes"

DS

1 record(s)
2371 13 2 D66B5C2A67078796DEB2548C039698D1960C7AD7CC32150F17AEFE31 0CB6437D

DNSKEY

2 record(s)
257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==

RRSIG

0 record(s)
—

Not configured

NSEC

1 record(s)
\000.springsource.org. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 -all

DMARC

Configured
v=DMARC1; p=reject; fo=1; sp=reject; adkim=s; aspf=s; rua=mailto:30ea61fa1f254eb5963d1aa10e093dce@dmarc-reports.cloudflare.net

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Spring | Home
Description
Level up your Java code and explore what Spring can do for you.
Final URL
https://spring.io/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://spring.io/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
springsource.org
Valid from
2026-06-13T22:17:04-05:00
Valid until
2026-09-11T22:17:03-05:00
Days remaining
33
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

4 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
104.18.35.66, 172.64.152.190
100,34 ms
Cloudflare
1.1.1.1
104.18.35.66, 172.64.152.190
47,65 ms
Quad9
9.9.9.9
104.18.35.66, 172.64.152.190
85,37 ms
OpenDNS
208.67.222.222
104.18.35.66, 172.64.152.190
55,43 ms
AdGuard
94.140.14.14
104.18.35.66, 172.64.152.190
587,81 ms

IP, geolocation and ASNAssociated network information

172.64.152.190

No data
success
No
country
region
city
asn
organization
isp

104.18.35.66

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

springsource.org

Port 25: Closed/unreachable - 5.9 ms - 
Port 465: Closed/unreachable - 4020.8 ms - 
Port 587: Closed/unreachable - 4018.6 ms -

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