WAPDNS.com

Analyze any domain

Get a complete DNS, email, SSL, HTTP and network analysis in seconds.

80
Total
85
DNS
90
Email
65
Security
50
Network
100
Availability
Domaintldp.org
IPv41
IPv60
MX records1
StatusActive
Domain technical report

The Linux Documentation Project

tldp.org

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

Generated: 2026-08-09T03:24:17-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX1
NS3

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

3 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

55 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: host1-rsa.tldp.ibiblio.org

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 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

1 record(s)
152.19.134.160

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
1337 a.mx.it-zone.org.

TXT

2 record(s)
"google-site-verification=TzJHmLwr-OQ5SzHZVFemmWrJOXtiVPvMAdqwrziVSmU"
"v=spf1 v=spf1 mx a:a.mx.tldp.net ~all"

NS

3 record(s)
a.ns.random.re.
b.ns.random.re.
c.ns.random.re.

SOA

1 record(s)
a.ns.random.re. dns.it-zone.org. 2026011489 14400 3600 1814400 7200

CAA

0 record(s)
—

Not configured

DS

2 record(s)
57518 14 4 B7A3CCB146356A4A342D4B40EF59FC16B012162138F1E17416312AA0 80B449D806496A3F05F2BE7B30B42E905F2660D4
57518 14 2 2D2D650A0072B911B7EB7B0CDF0233F2FA9FB6508716857CF4A651DB D83837EC

DNSKEY

2 record(s)
256 3 14 E9H8ceiAzNQN5JjyUprLZHbPQL42XdvclbjDMV2nQtYtqvTxXfsRaPC+ wwokp0Pmn+pKNFZ+dycQC8W0+TGAI7A1thbHlkdbLBKAx00Sr/VhMGRE i71/iFlM0fqVrjGr
257 3 14 0u0c0oQE2KklxS00aYfLlf1fpqgggV9cUE7lOrsPY2iW0ev9/LjB3aLD wsJAyx+cHW4ojwTfU/PPedDS04BweVPpwFG0Up62lspPua2xRsMAuG5V HntRCUbI1HDrg948

RRSIG

4 record(s)
SOA 14 2 666 20260831123150 20260720113150 59736 tldp.org. P3jN3TgSQCnN499c4ZBaeP35DGn66ZaH7k1bCHiB1IAGcKRDoI8EnR9n e5vhsybUxfsKaaLB/U5bSKDPI1OHFCcLVZ4C4irp9g8YEfgOQ/Z6HneH wofnNnG91++L49zt
NS 14 2 666 20260830073150 20260719063150 59736 tldp.org. s+P3+AVv6hsXoieiUtDc9/7I5nW021+rNDfG/nHbtzjrnskNdHJEVZ9R 6zFnYjHuH2p89rCdjo5Cy2FpZ0v5nGEpOJMGdW4MyQxmAiv56HKftmdR J249LG5I1M4c5UXt
TXT 14 2 666 20260830073150 20260719063150 59736 tldp.org. mk6a27klNrDA9CfPrcnzY1ypomqesQss6PozzcXVtIqiK/WS1HYyIjnI v+bvxIVSAmN0fMuShBOP0HEoZGgE/yx6AnUHonXKvkf4uZ6KFl3Ypj9R R0azTTuVcmdlppzD
DS 8 2 3600 20260822152352 20260801142352 44925 org. d3gKjdJ0qwXP6m+guzdJPVuPkhAD5vP8QN4sAsjrmiu++XlpBiyQVgE+ hk2Ueqt6sGdvxpihXxjaadiKBsH7yRoqGfENXiX9DWHXujUSszq2Fi3A Nv02lK180zWZEo9ApLRG4mHzZbe/CxQYEWRS6EZFywIzLhZjVbcP4QRX btc=

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 v=spf1 mx a:a.mx.tldp.net ~all

DMARC

Configured
v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=0

DKIM

Selector default
v=DMARC1; p=reject; rua=mailto:dkim@it-zone.org

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
The Linux Documentation Project
Description
The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.
Final URL
https://tldp.org/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://tldp.org/
Version
3
Server
Caddy
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
tldp.org
Valid from
2026-07-05T10:13:42-05:00
Valid until
2026-10-03T10:13:41-05:00
Days remaining
55
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

0 active
—
HSTSNot detected
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
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
152.19.134.160
41,47 ms
Cloudflare
1.1.1.1
152.19.134.160
461,77 ms
Quad9
9.9.9.9
152.19.134.160
29,87 ms
OpenDNS
208.67.222.222
152.19.134.160
353,82 ms
AdGuard
94.140.14.14
152.19.134.160
432,40 ms

IP, geolocation and ASNAssociated network information

152.19.134.160

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

a.mx.it-zone.org

Port 25: Closed/unreachable - 131.9 ms - 
Port 465: Closed/unreachable - 436.5 ms - 
Port 587: Closed/unreachable - 4019 ms -

Recently analyzed domains

View all →
asso.fr4siutica.cl4nwo.nl97ab.ca4hidglobal.com80googletagmanager.com66enamad.ir42businessfrance.fr96dovecot.org97bc.ca4