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83
Total
85
DNS
90
Email
77
Security
50
Network
100
Availability
Domaindbnl.org
IPv41
IPv60
MX records1
StatusActive
Domain technical report

DBNL - Digitale Bibliotheek voor de Nederlandse Letteren

dbnl.org

Digitale Bibliotheek voor de Nederlandse Letteren (The Digital Library of Dutch Literature is a collection of primary and secondary information on Dutch language and literature in its historical, societal and cultural context.)

Generated: 2026-08-11T16:04:19-05:00 · Cached result

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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

179 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: dbnl.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/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
80.79.193.151

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 dbnl-org.mail.protection.outlook.com.

TXT

5 record(s)
"Si5weaJt83ptZCx5nPrU6DRSXK9q4btTe8QJSer0WqUhHqEHDB/ZURgLqBE7iVrDs+3OWYzP3f1HQH8tOPDfnQ=="
"v=spf1 redirect=_sa2j1grf3.sdmarc.net"
"MS=ms76262038"
"HARICA-Uqo6l4s8KweD6jBcKBC"
"9b3647eb4f4c44bfa7a70ad4efa54102"

NS

3 record(s)
ns1.info.nl.
ns2.info.nl.
ns3.info.nl.

SOA

1 record(s)
ns1.info.nl. hostmaster.info.nl. 2025112001 28800 7200 604800 86400

CAA

0 record(s)
—

Not configured

DS

1 record(s)
60137 8 2 96232515D3552EFBC538F7239773CB9C4E8455A291DB892168EA848B A97D7968

DNSKEY

2 record(s)
256 3 8 AwEAAaV9XDpF7kwNgk6evMoH2PaOqUxQmm8zNVRAFdjCxpl49CEwUmBn WjWmn1RCSiCJ86h7UjRnnhDB1EdQPO0KI1hgJvk1gE6rEg70TgNzNLyi xphMG17V12lg3YgOo39L/k+HKERe52R1OYirH861IaNtLDGt0P7AhbxQ j5HGqPH7
257 3 8 AwEAAbbm7bT4zNLxa8TUIyvwIRhQ1Po3xEQ2OWj9srmMhbLR0DOA1Kd9 kJbGuVfN7CoM6CpvPQiwokaRz6lVsQUTM5nlKu6e9EHlXVMfFrt0QXIY J+ZYzTllfz9Jntz6ABlFaAw+fh/w4psrBZtOejwxqrQLHGvmI0BfeKP4 qqTDLh/zFZcvMb/yGM0Ja0m9H7rmm0ypKdVZGjOPmcqYSDWpIHC+05w1 FYIIRWDagkEOq7WAP1VxWxyBeBGpEGFLWfQC4rwcpYqsDjWk3Dt0naDd T4CZ3WYmUvn9k7o6pkGWTlNXFaSK1hbqHHKvMqPQZOTxdxeZeTc4c54J DSqwnVsE3SE=

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 redirect=_sa2j1grf3.sdmarc.net

DMARC

Configured
v=DMARC1; p=reject; pct=100; rua=mailto:a.a2j1grf3@sdmarc.net,mailto:dmarc@smtpeter.com

DKIM

Selector dkim
v=DKIM1;k=rsa;s=email;h=sha256;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDgj2WxaWwAe+mRDZs9kDrV198HziOAZspZ4SEVE1SAEViNMAVRNd0oCKGBi78TwFN0RMag0xQTz8No7ZsaJgI3jMQbez/wv05jTf+q1hQWQColf+rZkVK48e7LE4EJlUYe3Op3hQ4wjTXJcXdRwLLELShQeO9hIZ2SkPdgcflccwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
DBNL - Digitale Bibliotheek voor de Nederlandse Letteren
Description
Digitale Bibliotheek voor de Nederlandse Letteren (The Digital Library of Dutch Literature is a collection of primary and secondary information on Dutch language and literature in its historical, societal and cultural context.)
Final URL
https://www.dbnl.org/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://www.dbnl.org/
Version
2
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
dbnl.nl
Valid from
2026-07-22T20:23:34-05:00
Valid until
2027-02-06T19:23:33-06:00
Days remaining
179
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

3 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
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
80.79.193.151
40,82 ms
Cloudflare
1.1.1.1
80.79.193.151
240,72 ms
Quad9
9.9.9.9
80.79.193.151
50,34 ms
OpenDNS
208.67.222.222
80.79.193.151
255,33 ms
AdGuard
94.140.14.14
80.79.193.151
146,40 ms

IP, geolocation and ASNAssociated network information

80.79.193.151

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.216.212
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

dbnl-org.mail.protection.outlook.com

Port 25: Closed/unreachable - 24.3 ms - 
Port 465: Closed/unreachable - 4055.4 ms - 
Port 587: Closed/unreachable - 4020.1 ms -

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