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Total

DNS

Email

Security

Network

100

Availability

Domainturnkeylinux.org

IPv42

IPv62

MX records1

StatusActive

Domain technical report

TurnKey GNU/Linux | 100+ free ready-to-use system images for virtual machines, the cloud and bare metal

turnkeylinux.org

Generated: 2026-08-09T19:03:53-05:00 · Cached result

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IPv42

IPv62

MX1

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 policy0 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

70 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

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)

104.21.71.14
172.67.168.252

AAAA

2 record(s)

2606:4700:3031::ac43:a8fc
2606:4700:3031::6815:470e

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

10 mail.turnkeylinux.org.

TXT

4 record(s)

"v=spf1 mx include:spf.mail.intercom.io ~all"
"keybase-site-verification=qPuQtlpJbEoD0wmdc4PHnLK1_HE8LphL4iUmqcjsiiI"
"google-site-verification=mP1hF3HgkthELlEvXzbumS8PgrGNO5lK3EdPjMUghgA"
"google-site-verification=pT3cOsoj58x7mrWZXlWCVyCodNOMq3nbawmUC-BxuwM"

NS

2 record(s)

matt.ns.cloudflare.com.
elle.ns.cloudflare.com.

SOA

1 record(s)

elle.ns.cloudflare.com. dns.cloudflare.com. 2411390338 10000 2400 604800 1800

CAA

0 record(s)

—

Not configured

DS

1 record(s)

2371 13 2 2180CAFB52C6A195A2D98690A54D056A3B317015B08FF2340D27E2F8 B8AC1867

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.turnkeylinux.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 mx include:spf.mail.intercom.io ~all

DMARC

Configured

v=DMARC1; p=quarantine; rua=mailto:89adc71bc0b849cf986ea4129ba49f0d@dmarc-reports.cloudflare.net

DKIM

Selector mail

v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC34L26dBSdX2g/7HwrW0WfGxXlEpu5XvT9kHFx/ncmuvGkqMN8JWWbFU7H6mjOQKGqP+yJGGmU+jJa+2kKDl/9hC728sTx3nc3Svqe6o7nWbzYWLsKAi0mLhdHgshGBxn9A5wqpqWJ1BDjyOQc9WetPmdCscaDAih6G8Imag5hFwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

TurnKey GNU/Linux | 100+ free ready-to-use system images for virtual machines, the cloud and bare metal

Description

Final URL

https://www.turnkeylinux.org/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.turnkeylinux.org/

Version

Server

cloudflare

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Google Trust Services

turnkeylinux.org

Valid from

2026-07-21T02:59:43-05:00

Valid until

2026-10-19T03:59:27-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

4 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

Referrer PolicyNot detected

—

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

104.21.71.14, 172.67.168.252

59,68 ms

Cloudflare

1.1.1.1

104.21.71.14, 172.67.168.252

47,02 ms

Quad9

9.9.9.9

104.21.71.14, 172.67.168.252

111,15 ms

OpenDNS

208.67.222.222

104.21.71.14, 172.67.168.252

69,01 ms

AdGuard

94.140.14.14

104.21.71.14, 172.67.168.252

46,30 ms

IP, geolocation and ASNAssociated network information

104.21.71.14

No data

success

country

region

city

asn

organization

isp

172.67.168.252

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

mail.turnkeylinux.org

Port 25: Closed/unreachable - 3.5 ms - 
Port 465: Closed/unreachable - 28.1 ms - 
Port 587: Closed/unreachable - 25.8 ms - 220 mail.turnkeylinux.org ESMTP

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