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Total

DNS

Email

Security

Network

100

Availability

Domainworldcat.org

IPv42

IPv60

MX records0

StatusActive

Domain technical report

WorldCat.org

worldcat.org

WorldCat.org is a global catalog of library materials. You can search for books, music, video, articles and much more at libraries near you.

Generated: 2026-08-08T20:16:47-05:00 · Cached result

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IPv42

IPv60

MX0

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 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).

SPF0 / 25 pts · Mail

SPF policy not found.

✓

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

57 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 DNS0 / 30 pts · Network

PTR not detected.

✓

IPv4 diversity35 / 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

2 record(s)

104.18.32.188
172.64.155.68

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

0 record(s)

—

Not configured

TXT

7 record(s)

"facebook-domain-verification=ct6p8jbb66z6nu28qz4817jrz0ed1a"
"npqd3ygsj1hnj55s1g71lwzkfwhznbn3"
"_cipqqw054v1ru0uh3vac064on4oegss"
"mzhxtc5mtsykyrplh4zrg4z9m35snpvy"
"xpqv1hrsz3q41x16v4jq4zrfkq4hznyn"
"pinterest-site-verification=a6ef44050561dd412d6caa731124ca70"
"_4ug8uuejfm0w2osp4p1au7iu0k76z0d"

NS

2 record(s)

michelle.ns.cloudflare.com.
nico.ns.cloudflare.com.

SOA

1 record(s)

michelle.ns.cloudflare.com. dns.cloudflare.com. 2411477235 10000 2400 604800 1800

CAA

14 record(s)

0 issuewild "amazontrust.com"
0 issuewild "ssl.com"
0 issue "digicert.com; cansignhttpexchanges=yes"
0 issuewild "letsencrypt.org"
0 issuewild "pki.goog; cansignhttpexchanges=yes"
0 issue "letsencrypt.org"
0 issuewild "awstrust.com"
0 issuewild "amazon.com"
0 issue "amazonaws.com"
0 issuewild "comodoca.com"
0 issue "comodoca.com"
0 issue "ssl.com"
0 issue "pki.goog; cansignhttpexchanges=yes"
0 issuewild "digicert.com; cansignhttpexchanges=yes"

DS

1 record(s)

2371 13 2 B003C7A662E1678E2C7742B0573A38AB3A1089A3DDE6DF8AB40006BD AC4482AC

DNSKEY

2 record(s)

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

RRSIG

4 record(s)

DNSKEY 13 2 3600 20261004110945 20260804110945 2371 worldcat.org. nw86tEVNI9+HvSlkphEmzlseRX/5s+VXm+MQFp+aTdWaAxvsityhBIIQ z80wE9NyFMJ0n+IjGMoChsnd0djIow==
NS 13 2 86400 20260810021636 20260808001636 34505 worldcat.org. PZnFHerlp2EdIPI+REZkAnRkPTJLLtqvr/fZyRkXNGQwEjDfRT2us5pU mKWj+7hSCsID16bc8nCfQdm0ASnEhg==
DS 8 2 3600 20260822152352 20260801142352 44925 org. jJx+7WShwrWjH3pNUPv59S4GBI9F2ZOK9b04tqeS0jvd5+Sm4dA9PNij muVpBveh0NjMiTuqfnXhIj+njcKze70toCwd0wZD/edpsoKxieIZvg/G HOIBtY7utHBzZXznr7YPtHNh1ud+QIWjnJX4pbzq9/ONRQSOSEYj0AKE 7TA=
CAA 13 2 300 20260810021636 20260808001636 34505 worldcat.org. 3ki6mx45IZMQ8ml75VSoBlDEh3PBkFkpy/EQJDRfx9OK0WbkHhBeWYdg SVGrvLg9ow9ko35cvd7NMvNqyV0iVA==

NSEC

1 record(s)

\000.worldcat.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

Not configured

—

Not configured

DMARC

Configured

v=DMARC1; p=quarantine; sp=none; rua=mailto:4bb67a13@mxtoolbox.dmarc-report.com,mailto:f578c61671d7302@rep.dmarcanalyzer.com; ruf=mailto:4bb67a13@forensics.dmarc-report.com,mailto:f578c61671d7302@for.dmarcanalyzer.com; fo=1

DKIM

Not found

—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

WorldCat.org

Description

WorldCat.org is a global catalog of library materials. You can search for books, music, video, articles and much more at libraries near you.

Final URL

https://search.worldcat.org/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://search.worldcat.org/

Version

Server

cloudflare

X-Powered-By

Next.js

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Google Trust Services

worldcat.org

Valid from

2026-07-06T20:47:32-05:00

Valid until

2026-10-04T21:44:56-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

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

104.18.32.188, 172.64.155.68

47,33 ms

Cloudflare

1.1.1.1

104.18.32.188, 172.64.155.68

20,43 ms

Quad9

9.9.9.9

104.18.32.188, 172.64.155.68

27,00 ms

OpenDNS

208.67.222.222

104.18.32.188, 172.64.155.68

35,62 ms

AdGuard

94.140.14.14

104.18.32.188, 172.64.155.68

58,24 ms

IP, geolocation and ASNAssociated network information

104.18.32.188

No data

success

country

region

city

asn

organization

isp

172.64.155.68

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

worldcat.org

Port 25: Closed/unreachable - 3.5 ms - 
Port 465: Closed/unreachable - 4020.5 ms - 
Port 587: Closed/unreachable - 4020.8 ms -

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