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67
Total
90
DNS
90
Email
65
Security
20
Network
40
Availability
Domainsdu.dk
IPv41
IPv60
MX records1
StatusActive
Domain technical report

sdu.dk

sdu.dk

Generated: 2026-08-09T13:08:13-05:00 · 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 policy5 / 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

85 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.

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 response0 / 40 pts · Availability

No successful HTTP response.

!
HTTPS final URL0 / 20 pts · Availability

Final URL is not HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
52.233.201.66

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
0 sdu-dk.i-v1.mx.microsoft.

TXT

15 record(s)
"anny-verification=d5780c1a-c110-451a-a43b-677a9cc301cd"
"ZOOM_verify_JfJlqXcPR8a6z2Joan4Yow"
"google-site-verification=wZoog9iv4keZYCM_fFJJ2fBJu1lLb5kb97P_B34sGug"
"google-site-verification=fpCJBH8O2uLPHVCQNu0OdNutJd7Fu-IKzIJcotpCRdw"
"adobe-idp-site-verification=e34f6e4bcf7eadd6654192a257f41929b80b1f0ac7a82e77e2b0bb963e1adae4"
"jamf-site-verification=y2MyJGehxBpxegThwTyNaw"
"apple-domain-verification=EzeDYLR7YMFkMMac"
"google-site-verification=3T8w3y9e8UzPpnfQKDYYm6YT4qPGnd7blyntiVkeE60"
"MjV5d1ctQ3o0bE4XAgQiUVjDvo9yOdykuAZAacFNLnWNd/XEHcY17WHnkXKkfvXjeVqR5k8T/h7rUMKKv9bDvg=="
"brevo-code:56f327a18473aef300bb67ac76345171"
"v=spf1 include:_spf.sdu.dk -all"
"HARICA-prTfgBvvXzYiSZO85YT"
"brevo-code:b1414e0a234265a2faa294058248ae06"
"MS=ms64340864"
"google-site-verification=ETvx5gK_x2kcF8-H45R_mgcJdjMvhWXwzLjUcF84WCY"

NS

3 record(s)
ns2.sdu.dk.
ns3.sdu.dk.
ns1.sdu.dk.

SOA

1 record(s)
ns1.sdu.dk. dns.sdu.dk. 2012294676 86400 7200 2419200 900

CAA

10 record(s)
0 iodef "mailto:abuse@sdu.dk"
0 issue "letsencrypt.org"
0 issue "amazon.com"
0 issue "amazonaws.com"
0 issue "globalsign.com"
0 issuewild "harica.gr"
0 issuewild "letsencrypt.org"
0 issue "digicert.com"
0 issue "harica.gr"
0 issue "amazontrust.com"

DS

1 record(s)
12715 13 2 4C079F9F93968163DDB0FA7B06789045F02544B04752A92719073447 02987ED7

DNSKEY

3 record(s)
256 3 13 hoXDZPDGitQUvfPubW5TgH9th6rrv0t7AftcDyDzuj/MWsfs+0SBa/iz Wbl6KL9R/P5tm+/81BQhD28PgpCm8w==
256 3 13 6XflPhUQ2cbAYbpxLsjSrNFKkvBXiw2+BFgniq3HQHAv6XIewOaIqfoS HeCEWjQKaflASWq9jhOA+rYekdv1jA==
257 3 13 8cpAXhKPV4FE6D6QxKuKXfv7u0Bv1Cv4hB4u8enA9qxutbZMTz9b1ZYP lgSGuYCS/OogTUSQpg6+LiPEOCyy7Q==

RRSIG

4 record(s)
MX 13 2 3600 20260906160749 20260807151639 16135 sdu.dk. k9nO73SeKbrwSnt8c8J4bbwWHA5VHfyEz/AHKe03ASK6AVYztwsecD4u NR3zXKGKD19Wo87GVKVaSyfwokpYAQ==
A 13 2 28800 20260903005249 20260804003340 16135 sdu.dk. jpQC6iqr5okbYp/xErTiJQ0awXw6epnxu48oHde6k8mvw4QY4Fw5hKTo Q7P7fYU6Jgw8VinJbVrAt7jNdh0HlA==
DS 13 2 7200 20260904192707 20260807175707 48306 dk. 9YjsB1+6OeJuJHtaZrAga8I5dBcc9POsRXkKZb6kIZMYKJr/li5kynlC +/IsPrsbQzWrl0Gx/Xw/dvPIe4Blsg==
CAA 13 2 28800 20260902220150 20260803212845 16135 sdu.dk. Qa+iZqe5wW02MK38NZH8T9Z1y2StFSp2pXEQnTAdAjp2tHn1Ep8RBlDB MsrSX77aMH6JYUxLwxkXYeYwPzYEwQ==

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 include:_spf.sdu.dk -all

DMARC

Configured
v=DMARC1; p=reject; sp=reject; rua=mailto:655b353a1f136@dmarc.centerasecurity.com; ruf=mailto:dmarc.reports@sdu.dk;

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzL/jvpjMTrwBDLRigVvXHZEOzTwFFltSlPVEPCRhBJe/gPvaSBgTULexXbysqaJU3bitViale2x60vNO9XDX2KOR5qa+VeVtDjYWaSjvzw7JtQAso7/9jwBU8dONRFbSCHSsffYusQ7CkN9hO6DuUHh8Otz8SvAQgXLuujkLYpYbtm3xO+5LDE5aDcq2h0rdXwsWISwQGgxks3Ja47JVSS4xbeyKts/pRm5PqSDQ7WJLIqXXz+xzVyOAnsiUhYBjolo9nY4N2I1bXpec7Sh5OhFv61eh0Hpx07KtIwKhdoXooODE1OH68vX/4KIypPwlo3g0SQ13XLb9GvuU2R5fyQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

No data
Title
Description
Final URL
https://sdu.dk/
HTTP status

HTTP

Status
Final URL
http://www.sdu.dk/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
*.sdu.dk
Valid from
2025-11-03T07:20:07-06:00
Valid until
2026-11-03T07:20:07-06:00
Days remaining
85
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
52.233.201.66
58,71 ms
Cloudflare
1.1.1.1
52.233.201.66
296,24 ms
Quad9
9.9.9.9
52.233.201.66
287,78 ms
OpenDNS
208.67.222.222
52.233.201.66
472,02 ms
AdGuard
94.140.14.14
52.233.201.66
44,77 ms

IP, geolocation and ASNAssociated network information

52.233.201.66

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

sdu-dk.i-v1.mx.microsoft

Port 25: Closed/unreachable - 18.5 ms - 
Port 465: Closed/unreachable - 4019.3 ms - 
Port 587: Closed/unreachable - 4019 ms -

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