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68
Total
70
DNS
65
Email
96
Security
50
Network
40
Availability
Domainlinuxquestions.org
IPv41
IPv60
MX records3
StatusActive
Domain technical report

Just a moment...

linuxquestions.org

Generated: 2026-08-09T21:32:26-05:00 · Cached result

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IPv41
IPv60
MX3
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

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

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

3 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

✓
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

64 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers31 / 35 pts · Security

8 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 25.195.244.35.bc.googleusercontent.com

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

!
HTTP response0 / 40 pts · Availability

HTTP/1.1 403 Forbidden

!
HTTPS final URL0 / 20 pts · Availability

Final URL is not HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
35.244.195.25

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
20 alt2.aspmx.l.google.com.
10 aspmx.l.google.com.
20 alt1.aspmx.l.google.com.

TXT

1 record(s)
"v=spf1 a ip4:35.239.126.218 ip4:104.154.38.197 include:aspmx.googlemail.com include:sendgrid.net include:amazonses.com include:spf.mandrillapp.com include:_spf.google.com ~all"

NS

4 record(s)
ns-cloud-d4.googledomains.com.
ns-cloud-d3.googledomains.com.
ns-cloud-d2.googledomains.com.
ns-cloud-d1.googledomains.com.

SOA

1 record(s)
ns-cloud-d1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

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 a ip4:35.239.126.218 ip4:104.154.38.197 include:aspmx.googlemail.com include:sendgrid.net include:amazonses.com include:spf.mandrillapp.com include:_spf.google.com ~all

DMARC

Not configured
—

Not configured

DKIM

Selector smtp
g=; k=rsa; t=y; p=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAO/im1x26lPYTnJTU/yAJJKPIT8hh9pkoJOAjIkhMFlfyFqFoOAlHhzxHe1ERqkLuigyorle/uzSpK1pFb0wVZECAwEAAQ==

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Just a moment...
Description
Final URL
http://www.linuxquestions.org/
HTTP status
403

HTTP

Status
HTTP/1.1 403 Forbidden
Final URL
http://www.linuxquestions.org/
Version
2
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
linuxquestions.org
Valid from
2026-07-15T08:11:35-05:00
Valid until
2026-10-13T09:03:25-05:00
Days remaining
64
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

8 active
—
HSTSNot detected
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
35.244.195.25
167,68 ms
Cloudflare
1.1.1.1
35.244.195.25
80,65 ms
Quad9
9.9.9.9
35.244.195.25
117,90 ms
OpenDNS
208.67.222.222
35.244.195.25
55,23 ms
AdGuard
94.140.14.14
35.244.195.25
429,73 ms

IP, geolocation and ASNAssociated network information

35.244.195.25

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

alt2.aspmx.l.google.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4018.4 ms - 
Port 587: Closed/unreachable - 4006 ms -

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