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Total

DNS

100

Email

Security

100

Network

Availability

Domainpostnl.nl

IPv42

IPv62

MX records1

StatusActive

Domain technical report

postnl.nl

Generated: 2026-08-11T00:40:56-05:00 · Cached result

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IPv42

IPv62

MX1

NS6

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

6 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 propagation0 / 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-STS5 / 5 pts · Mail

Mail transport policy.

✓

TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

89 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: a23-33-29-134.deploy.static.akamaitechnologies.com

✓

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

No successful HTTP response.

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

23.33.29.134
23.33.29.143

AAAA

2 record(s)

2600:1407:7400:14::17d7:bed
2600:1407:7400:14::17d7:be9

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

10 postnl-nl.mail.protection.outlook.com.

TXT

17 record(s)

"google-site-verification=GWGxBXl92bzo7nltDfPaLKbugMtgYNzQ8Rbkuhm6iYk"
"pardot_301951_*=48970e6fc45d8ec30f71387137d35a7773aead17090615c1553bdd0ceb10b1c3"
"openai-domain-verification=dv-917zSGBp8Dpxx0y6lC6JkKKI"
"j6qmwwxpyzk34dnbmj68qdd5zzl7jh6q"
"MS=ms37833763"
"openai-domain-verification=dv-PonaGpwaZXCpODLiVBtCK3ta"
"jamf-site-verification=XItWgplAcL6X-MZv4Khexg"
"onetrust-domain-verification=74b428aca4be4f9797ef59e1bf5768c6"
"v=spf1 ip4:87.233.130.51 ip4:83.149.98.72 include:spf.protection.outlook.com include:spf1.postnl.nl include:spf2.postnl.nl include:spf.topdesk.net -all"
"MNgM0tfwmQfvXEDPAev/o1Qy5yqS9ePGscJB+kNeIe392K6hzg2+IKF8tfmb+8cnhC/gUb+bZbk38fVYvj9K4A=="
"adobe-idp-site-verification=6a45d6aa22fc438b97a4e3d282ffe785492c90831b8365a246283658479794b3"
"anthropic-domain-verification-t0crjy=xTxtqmamcZdSnzwdL5zwlQ7OU"
"miro-verification=961700b9c0914fd95da5f6c540edfca7beb773eb"
"onetrust-domain-verification=8f184bac1ddd446ea5432e43860473dc"
"atlassian-domain-verification=tdrQtMHi0im7Nb+CyN2BZvkJNYBTFPMyTLMm+4O+UGlKYltKFSkiwt2DqKyz/MSN"
"google-site-verification=w70WsHjdPfJF8qD3dR1raPg04dDKLzLlzYTPt2FT3rA"
"google-site-verification=7bKJMEdNGuE06EzL0diQp_EvY_v_zwS_F6U8Gho1NTk"

NS

6 record(s)

a1-6.akam.net.
a14-64.akam.net.
a13-67.akam.net.
a2-66.akam.net.
a3-67.akam.net.
a18-65.akam.net.

SOA

1 record(s)

a1-6.akam.net. domain-registry.postnl.nl. 2018072373 28800 3600 2592000 900

CAA

0 record(s)

—

Not configured

DS

2 record(s)

37447 10 2 43E7CAFA9BE569543B22F94E5E4B73F2EF7E773C834C97ECF14A61D7 176A3BA1
42727 10 2 5989DE835E68068E14317911684020067E0E6C37D4EF9B198EC68A51 A80C3EB8

DNSKEY

3 record(s)

256 3 10 AwEAAd7VA1jt6H9BIJANHm3jLw/Ulib1AeJgKOQtPszkwxk5M8X+f2NU KGIt/9jdxK+UwH+SW84oFJA1SG0kpGeLhmPDfU/VhMwXQeXzbdGKuOw6 GI/9B5a38bv5BwoWL9hmPvvPCmqYv0Kyci4YZ5VuDA2gKpa9YH8OeVwH RqAolZXP
256 3 10 AwEAAboAEr5X6wZ3OOsoTZOEziGHRX8WhelS61U8jhc/JaRd16pJrZNk HFztf9m0FlYVHU0fFSDrh9TZAKvKnPLc9DgAePIjGXeHJk8xes0yONIf iAS1m4i76+PAxt1JmtbQWcNT17RVNQL4/sj95NdNPD0jbAInzE+xDx+G NmWf47sp
257 3 10 AwEAAaMjrhpn82VREiny17CqWE3hALBOL4nPTujkYIIGsUBV5uUyM5Ck rIhgaWn2oCk7qEhzVsTWtpOmoT7rlULaW+TZA4c6Fq43+i+jwgSR2hPi IWqEUvV8A6rGTGkrtSG05MTf6c8s8/GHVAf4RrNlOV531JlsPJuTHtri WMbwUVRHnyuplTpKabbDsPWnPda+NW23XQJTNiazyWenVIdnv623ixdo 3AVFxg2orTziSTaeFdiaXHrMIZPZcrfDFISY17sC81U2WT/9d8UbhlaP oas6vPSbZO+WccUvM/0Zf8Qd/r8chjWkorJWAPbULnCmMHgZEKza7R1C 6jGobDebLhc=

RRSIG

5 record(s)

TXT 10 2 300 20260813082847 20260810072847 29321 postnl.nl. iKmkpd35q6+g6viWP2EmRNsZuJ4tu/K9recaYFX1Lg6Dzr8SfS/mae4L Xz6J79L5GkGtvxASEiRfjZV76dEzOUawKDQiKRuX18zHpMFV7l2Iu9u5 VcTaa81hyCMvaivZPle8kzHDiHY+jtg39F/XaLl2By6oNBt8Ro+bPZCF gM4=
A 10 2 20 20260813082847 20260810072847 29321 postnl.nl. j1OUUd70ekDkbGPMTO73Z5bjXIJ7I4vk136n+NEGUcrpnIM96LJLLa6p PpaimLwWivipPaRzBoml6Z3XWRJMIwksOJfSPkC837KSgjVwUAV6Tp8K e2E/IEF+pmnFJCtv75aNgNv0rYiy/HfBfD9nRs6gXC8l3WpPCJA8SFCI QXE=
DNSKEY 10 2 7200 20260813082847 20260810072847 37447 postnl.nl. cOFMyZ8O1h29PsODO9HCUR2CtJB97XcedonwEeWuEZhnfzwZXccBBc8o NdKoNfEFKQ/byuacac1bvswf+HL5bUng4j9Eha9tZ1fDY211TzcxkaE9 1aauee3KvKRuRq4Qn0UE2uYm6ljNlzgepRwITmReaY/77qdNs703zALk SYV7pc3os0J6lAgCI70pf2D7jUDr5r3kZuHo9gMbqldyzxmkojlnn0rG +aViN7AXb52Eowzia2NjbPDvHfeh89dtHR+pUafOariz4onOALvFoQjb rXm3YMveQRru02xoKgZHdMNvSi/6dU+24BIlt4W/ZQvhkwrBVQ5IEnEJ 9JbCpA==
SOA 10 2 86400 20260813082847 20260810072847 29321 postnl.nl. r4Mk5ArtHofpve1P49URu1BfonI/UPsc+Jp4hyhBQas1Zb14v07OwaDU gDy6T+EL2Y2RIuUgsrbsyMeICAY0WXZbt9Lk+5rFDMqSNK5vZZTtCut4 D/fezpt/baupBJHB7t2giufA9Y6hN0j4cqCYRhmZK9imO2lXezBmPolH kqE=
NS 10 2 7200 20260813082847 20260810072847 29321 postnl.nl. UbEEhE9qiRunwp9J1Rhed4yxzSyubeb4xi+nm2n23Bfv68Ido9hBYKGu 2kk5hyZ4wX6DaeoORDcgmxaoXN4h2qyTtLHHFPlOFkESdghQiAyMjal/ PAiZZ0DSwM8wB5qxQJHVTDLeWePNrLXduUVSzezYk0kXGxIgfKr7lWn+ M2g=

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 ip4:87.233.130.51 ip4:83.149.98.72 include:spf.protection.outlook.com include:spf1.postnl.nl include:spf2.postnl.nl include:spf.topdesk.net -all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:m9sha5zi@rua.eu.dmarcmanager.app; ruf=mailto:m9sha5zi@ruf.eu.dmarcmanager.app;

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDNt9p9piN4EqvwZmxEj5s3QJVfF+nkufJk6ls2FtFnBHCx/NZjFlOUbs+kMLTbBUjNjNg+6X1Vzbzt6NPnyo/hY6o6RhpY2H8A3tCM2Vqrly3XSTdThhKeDAt2594bpuH2MwhHSBk9MO50DEvIV4Ysr58aly10h/hS3jYK72iHCQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

No data

Title

Description

Final URL

https://postnl.nl/

HTTP status

HTTP

Status

Final URL

https://postnl.nl/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

postnl.nl

Valid from

2026-08-10T04:32:59-05:00

Valid until

2026-11-08T03:32:58-06:00

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

23.33.29.134, 23.33.29.143

52,91 ms

Cloudflare

1.1.1.1

23.215.11.233, 23.215.11.237

31,12 ms

Quad9

9.9.9.9

23.211.127.11, 23.211.127.6

57,05 ms

OpenDNS

208.67.222.222

23.33.29.134, 23.33.29.143

113,93 ms

AdGuard

94.140.14.14

23.200.88.70, 23.200.88.71

82,02 ms

IP, geolocation and ASNAssociated network information

23.33.29.134

No data

success

country

region

city

asn

organization

isp

23.33.29.143

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

postnl-nl.mail.protection.outlook.com

Port 25: Closed/unreachable - 22.3 ms - 
Port 465: Closed/unreachable - 4058 ms - 
Port 587: Closed/unreachable - 4021.3 ms -

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