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Total

DNS

Email

Security

Network

Availability

Domainlinustechtips.com

IPv43

IPv63

MX records0

StatusActive

Domain technical report

Just a moment...

linustechtips.com

Generated: 2026-08-12T01:54:46-05:00 · Cached result

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IPv43

IPv63

MX0

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

3 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

3 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 records0 / 20 pts · Mail

0 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

49 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers31 / 35 pts · Security

8 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 response0 / 40 pts · Availability

HTTP/2 403

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

3 record(s)

104.26.13.25
104.26.12.25
172.67.75.68

AAAA

3 record(s)

2606:4700:20::681a:d19
2606:4700:20::ac43:4b44
2606:4700:20::681a:c19

CNAME

0 record(s)

—

Not configured

MX

0 record(s)

—

Not configured

TXT

2 record(s)

"v=spf1 ip4:192.99.56.40 -all"
"google-site-verification=2AuoZ3QaZB7y5WCQjuoKLfJUJNxFXuTHXr1kFnQDceo"

NS

2 record(s)

odin.ns.cloudflare.com.
maeve.ns.cloudflare.com.

SOA

1 record(s)

maeve.ns.cloudflare.com. dns.cloudflare.com. 2411188225 10000 2400 604800 1800

CAA

0 record(s)

—

Not configured

DS

1 record(s)

2371 13 2 1069FA056C4CE59F4A5CF092603529AC9F9C5324F58F2459166815E8 2ED5A64C

DNSKEY

2 record(s)

257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==

RRSIG

5 record(s)

SOA 13 2 1800 20260813075437 20260811055437 34505 linustechtips.com. +rbZp8f5kDwkqHk/8Zs+ewikfqMTQf3M+oj+TT6/uT7uJHO8eM9AY3LF qhG8YjGFemMHly6EBgdMHD55Cg0rSQ==
NS 13 2 86400 20260813075436 20260811055436 34505 linustechtips.com. xgn7Z7hRKivXgnv9Tu3L0t3cY3F2AgGKdqFlsq1p4thmFL5279VywwDc 0vU2bLRXiZFCRTHfjhwwmoYSLH63dA==
AAAA 13 2 300 20260813075436 20260811055436 34505 linustechtips.com. U23+snDJeVCKQTX8H3c9HNVm6fgwPP+6VdTTxKWo5MYsu0MyWESRfVvT D9llAMwocjGx5ILP34fuLcfIEcciUw==
A 13 2 300 20260813075436 20260811055436 34505 linustechtips.com. y/ETFjzdJ/yAYcSpws7w8u4UhP1WF54LgP2trjmcAo8W0vrs5RFEpIWu IBAc4eVUdh1Fp+xY0QBLcND26wzyWQ==
DS 13 2 86400 20260818023352 20260811012352 41446 com. 52OFjMw1XDLSU8ESMnSRMsJxeJXwdI+rU+pFkdRigPjYNE66pfzFPlYv Oq7DWqKlX61vq4rTBgK/U1kmy3TyNw==

NSEC

1 record(s)

\000.linustechtips.com. 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 ip4:192.99.56.40 -all

DMARC

Configured

v=DMARC1; p=reject; pct=100; rua=mailto:c00cc3fc828f422d8e86d1c5b7542eb7@dmarc-reports.cloudflare.net,mailto:re+whpligeibwh@dmarc.postmarkapp.com; sp=reject; aspf=r;

DKIM

Selector mail

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDL0N8rq8PiqV/QvT46GUE3CP2dJ6UNsNruOCf6Zhi3fjWTCbepfl8YUl0TS/rRbU/M0njkR0SBW85nut/HijwCe1MQf1Bxkoz6nq4T4lfq6N5+Dsh4WGVmYppWD8X8HVf2Lz8goDyRR1Uh57sCKq0Z+RfVzPVzIKi85TmYVrvyDQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Just a moment...

Description

Final URL

https://linustechtips.com/

HTTP status

403

HTTP

Status

HTTP/2 403

Final URL

https://linustechtips.com/

Version

Server

cloudflare

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Google Trust Services

linustechtips.com

Valid from

2026-07-02T18:43:18-05:00

Valid until

2026-09-30T19:43:11-05:00

Days remaining

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

104.26.12.25, 104.26.13.25, 172.67.75.68

54,92 ms

Cloudflare

1.1.1.1

104.26.12.25, 104.26.13.25, 172.67.75.68

50,71 ms

Quad9

9.9.9.9

104.26.12.25, 104.26.13.25, 172.67.75.68

42,66 ms

OpenDNS

208.67.222.222

104.26.12.25, 104.26.13.25, 172.67.75.68

54,98 ms

AdGuard

94.140.14.14

104.26.12.25, 104.26.13.25, 172.67.75.68

76,01 ms

IP, geolocation and ASNAssociated network information

104.26.13.25

No data

success

country

region

city

asn

organization

isp

104.26.12.25

No data

success

country

region

city

asn

organization

isp

172.67.75.68

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.216.212

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

linustechtips.com

Port 25: Closed/unreachable - 0.9 ms - 
Port 465: Closed/unreachable - 4019 ms - 
Port 587: Closed/unreachable - 4020.7 ms -

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