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Total

DNS

Email

Security

Network

100

Availability

Domainliu.se

IPv41

IPv61

MX records1

StatusActive

Domain technical report

Linköpings universitet - Linköpings universitet

liu.se

Linköpings universitet (LiU) är känt för innovativa utbildningar, gränsöverskridande forskning och nära samarbete med näringsliv och samhälle.

Generated: 2026-08-09T00:18:26-05:00 · Cached result

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IPv41

IPv61

MX1

NS3

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

1 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-STS5 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

62 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: www.liu.se

IPv4 diversity20 / 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 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)

130.236.18.52

AAAA

1 record(s)

2001:6b0:17:f100::18:52

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

20 liu-se.mail.protection.outlook.com.

TXT

13 record(s)

"Wj9GiC5Odz69gYhwyRfmweCsYW09jv3XC8WopVAdvMFF/lyoYPJnLKHnwXYRKf9Hxhh197Tri7V3XxsaU/3mAA=="
"onetrust-domain-verification=6395e087f71047acbfed803444d7225c"
"canva-site-verification=G1DsDdUTb-poz0XM3Jb_EQ"
"MS=ms85100167"
"MS=ms22226716"
"TeXoJcGilMACE4ZaaVK68AEKhdEDMrLv"
"graphpad.com:domain-verification=YQUm4as6A-wBSOQ6dVTfpQ"
"v=spf1 +ip4:130.236.0.0/16 +ip6:2001:6b0:17::/48 include:spf.protection.outlook.com include:spf.wm.net include:bngaged.io ~all"
"ZOOM_verify__IVTfY8nSHOL-qRMRLRBEg"
"google-site-verification=BqNguxZguI-ROsTDOffJYIbpp3xG-AnGw1UuB9bLz_8"
"autodesk-domain-verification=ve1q8LiBOwQ-7cjPTV0Y"
"google-site-verification=3KQVNJpqJy1SccT-B4gOno8UGDneIdJA1EUfercg7l0"
"adobe-idp-site-verification=c5cff5372afafaee2faa9836950eb48bffb02fec9b5af3fab9bcc37d80ea5b3e"

NS

3 record(s)

sunic.sunet.se.
ns3.liu.se.
ns4.liu.se.

SOA

1 record(s)

blox.it.liu.se. domainmaster.liu.se. 2015407271 36000 3600 1209600 600

CAA

0 record(s)

—

Not configured

DS

1 record(s)

41059 8 2 25F1ACEE3FD2DF47FD920921D619D9C5DA7F9F43EB7FBCB25AB82BF1 DA2976B3

DNSKEY

4 record(s)

257 3 8 AwEAAdfuY2B1pr4W/GvoeTGR7zOmyWrMk4dcMMxNqcSJmdFkWiQx+gjQ 2WhQ9PvWofe/r3tuz899TSZeIRadWZ+gAyz/7n8E4UW7cBQAuM38oLw1 6mlc9Ye+R57G9D66vDYkFdszkm+/OSWnFLgxOMZw8yN5DuHS/i2ErYLJ qgbn2TbXxJG1RxSDSlA33w+y88qiPUg28NMVkAuhOnlfZPI1tZoIgPGq A3PmTI9XbulBO9ndYFkZ8AbAW7HcNEKD8EN/qmu1PTQqTcwUk6k5IHY0 MBLUqgusBDKOk8NsWP93trr9w1aAJ5QaXD8Q9z8koN6CO7coNmyYwuRy /UJxJwh/s9M=
256 3 8 AwEAAYLpXpDlk0j1rImNkncKXBOe1weQ84iUTAs2Azy4GsPIMiyfXceT 59kSmZregh0IJm1GXnBfxeVRyJu8NbwRaCiiLz6eqNZgzt5fkUToEP2I 0f2aPrvwpNl9NAEswH8ir5OMuMBPb9pAB3JcFQEv6tBCWjC6o5E/m/rD fQnQDOpSFrqy9Kj6RgMDpZgLZrpIvfeQa7Y1ZuTQq6qVQmZiLc3RZKPU j6aPGspzP4p04dJCx0qq2rQNLOwVWXfHDF26D1uGwN2JgQmpbI1hjZ7Y r/HbiWkpBfiEVh9F0cojdtTgDPc9vYwaHEpa8EDv65eRCh6bYlgtr+Tq dyyTuw5/+AE=
257 3 8 AwEAAdYUOisH6Tj4u11ysN9RQjJYwclEPALuYz3dwIQLY+zopz1CXx06 P/TRiB5kw6vBSOA9NDJ6LARr4bDbVMID+xiBLoxtjgMb/oTCgF4JiAV7 9Y+6zfg+NYSXBmTqxtTIs7GnLre2KWiAgxHA3snb47KGKdhOJmS9uZOb wvktIFUeo3TWRH98DjeSTnhYJjulTOOyDrLD56PB74srl3JN3u8qWFi5 InkN91Csf0IlUukzRBQZ7qwxgCKv6AF9o2Q/pIL4/viNVazY0zQixMCr fA2PktYZlqvjzI6/iSlSMW+A5Pi1TL15tlPu3m0F00lgsfNWErA7O+qA UlYIWD70LHk=
256 3 8 AwEAAdobdgIh7YKqQOwCH+qMbY37gF/U+81phRxguW2vLlv68u53UHGs E5vz0QMU5gEuAR0xKceUpHiob7Kw5wNfM2D7j5Pelyy9vWH7xIPGx2bZ b6BU6WuljZAQj+5tMXd/eOegRUDuAlldB8/kPcnkrB4/DOmIghrWD/uV udZRLfzP3KZqfDaxVK14wkNcT3hzVxIkzm1Qw68+1TzEjp5vGBhvMlwT i25oXlL19PJM4vNhyNz/dkScrviKERf1kCXr/iXTdLIVduK1lgttH//j efmSzpO5JoDnEF7rBkAbMI6d8RTCaLFIFedCGQU3oiCXmiUFf8lHvYIb P544BwVqN0s=

RRSIG

3 record(s)

DS 8 2 3600 20260823031137 20260809014137 9573 se. MPhprwAxhVnXO+ri9Hm5qb2I9E+toNToXeWxl7FpoClOWk1/9eIHHiD6 raaDNv4FKDLxR1TVnY9ocO0iTQx7K60x1nf92/N2KYuPaDFTAZ12GQ1K O2X0e4m3B4J7FP62ph4mAtuK19GqeJ4BukJ0c/yKExwAlaZRT310v+Hy yFnUaIuz8ccbOlAd9aEMXCAzvaxpjvQiyLoK7ozk3V2X4Ona7Lr2EHI6 bG/i/yMV3BlJ7nV4UP3n2xFhdzcdwygwDfx5a4IVz9KYkY3ql2+Ly1iP hxGEUulYpEESB9dBUGf9IhA+6GGIlBspRI3H8+/CGIOqSTYlC7U8PWFC pEdsjQ==
NS 8 2 3600 20260904131723 20260807123422 62566 liu.se. egg31xCSDj84/WIlToxxWcBoBvZKUcZHj/QqrJmx8It4WqBIqqBLerl+ tQcDrzqHNOfiGR+HCYrnEs7zXdiVYwOCLEkqXXynu3IuwDAgS8tkIvyf S5eOLBWt0GizdK2mgV7pUZSPuHpThy4/1PnO6iAfNM0ogYgBcuOKi2AT b1w1ZOP8XWFatdvKNUIwtDhuv99hSOmR/Cf1jZheDYSFZImsXRFPzKyO PrQKQqLT04T34/JUDRNbx+Xxd7cVRdp/SePF3u1+apinBMchVJy+vMyu lCg6NCa3T3WZ5dcQWwon8etNzV7lpWLevdPcf9MQE9y+8wR1sj8ksV3D ueEZRQ==
MX 8 2 3600 20260904131707 20260807131310 62566 liu.se. JCuqUZrlLJFZ20x3aAk7UBNzChILGP6WPmRiz6ITaXkIQqn307vrxMiH KksskUDDaxEmeD25Vjo5x5aPvGDx6W6rzGeYnY6zd17JUNO86cAvSDWn K9oIMOkdx2J/8WcTHAXgTyx2bDBN5FCQ2SkLUusMoJemhDLtsOft4jMW JWND4hhx7fDDi9JiulZRVFf6pRjZWRJukgupcnc8T95DqkeOwquVV1xo XmWlD0JQYMrCAg/wg02uRZnk9OuWMliKHIHTrtTFA5eEUydA22N82IRN VLPiVuvE7x8SfXM9dyK3KKacl2JhCowEJQs6TmCQAWu1/BOckYS2TiMs GZWWug==

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 +ip4:130.236.0.0/16 +ip6:2001:6b0:17::/48 include:spf.protection.outlook.com include:spf.wm.net include:bngaged.io ~all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:re+mqtv8v3e6x7@dmarc.postmarkapp.com; ruf=mailto:dmarc@it.liu.se; sp=none; aspf=r;

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuUilh3Dw43DN1B69E8DwydXkjOj+bgAiMgw4wdnS3X9X+B1s+Ju4JpVAXro7ETh/Jc+c7+gkLEwlvlbWcOKKMdBHDt8J+ndSlvqm2BDYHH6s3AH8ldzht8W24ffXjiOXUO+0r9z/JGjAXwhLmc+84aVJA3C4MVcF8D8RxYXNJNQl9YOkMnQhM14cCAIoh11p3fNkbM4LPKMhYAT4bYMe+5jGdsa0nQMae3ZZlRI078be+ABlVWzYv0enki9vGJZLbvq83MRMsGorR1knq+GV+pWvx2tY0tOofnbmoCUjR3078sJXquwMOxErMlAgGuMqJ8xzINVxUWaxZmacCTvQaQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Linköpings universitet - Linköpings universitet

Description

Linköpings universitet (LiU) är känt för innovativa utbildningar, gränsöverskridande forskning och nära samarbete med näringsliv och samhälle.

Final URL

https://liu.se/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://liu.se/

Version

Server

Apache

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

liu.se

Valid from

2026-07-12T18:15:20-05:00

Valid until

2026-10-10T18:15:19-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

5 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

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

130.236.18.52

34,66 ms

Cloudflare

1.1.1.1

130.236.18.52

149,50 ms

Quad9

9.9.9.9

130.236.18.52

281,36 ms

OpenDNS

208.67.222.222

130.236.18.52

148,17 ms

AdGuard

94.140.14.14

130.236.18.52

256,97 ms

IP, geolocation and ASNAssociated network information

130.236.18.52

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

liu-se.mail.protection.outlook.com

Port 25: Closed/unreachable - 24.5 ms - 
Port 465: Closed/unreachable - 4052 ms - 
Port 587: Closed/unreachable - 4021.3 ms -

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