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84
Total
80
DNS
90
Email
69
Security
85
Network
100
Availability
Domainuni-osnabrueck.de
IPv41
IPv61
MX records3
StatusActive
Domain technical report

Universität Osnabrück: Gut studieren und leben!: Uni Osnabrück

uni-osnabrueck.de

Die Universität Osnabrück ist eine Hochschule mit breitem Studienangebot in den Bereichen Wirtschaftswissenschaften, Jura, Geisteswissenschaften, Sozialwissenschaften, Naturwissenschaften, Künstliche Intelligenz (KI), Lehramt und mehr. Bewirb dich jetzt und entdecke unser Campusleben!

Generated: 2026-08-10T07:23:39-05:00 · Cached result

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IPv41
IPv61
MX3
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 chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

3 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

181 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: t3prod4g.rz.uni-osnabrueck.de

i
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/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
131.173.17.203

AAAA

1 record(s)
2001:638:508:100::83ad:11cb

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
60 a2411.mx.srv.dfn.de.
60 c2411.mx.srv.dfn.de.
60 b2411.mx.srv.dfn.de.

TXT

6 record(s)
"MS=F7AB0550ED5397BE998EB88CBD0E5F82D6851A62"
"google-gws-recovery-domain-verification=65368653"
"7256bbaf-02f7-4f8f-8edd-928234e5ed08"
"google-site-verification=J3ZwOfNa3q_gqnhQ0pjG2ItIweptYl4teLM1cfFISMg"
"brevo-code:8be95397c5b7b7d63d03554f1a3020af"
"v=spf1 mx include:uni-pur.spf-incl.uni-osnabrueck.de include:dez6-add.spf-incl.uni-osnabrueck.de include:spf.mailsupport.dfn.de -all"

NS

3 record(s)
dns-3.serv.uni-osnabrueck.de.
dns-2.serv.uni-osnabrueck.de.
dns-1.serv.uni-osnabrueck.de.

SOA

1 record(s)
dns-1.serv.uni-osnabrueck.de. dnsadmin.uni-osnabrueck.de. 803579721 3602 1802 1209600 1202

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

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

1 record(s)
100 10 "S" "x-eduroam:radius.tls" "" _radsec._tcp.eduroam.de.

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 mx include:uni-pur.spf-incl.uni-osnabrueck.de include:dez6-add.spf-incl.uni-osnabrueck.de include:spf.mailsupport.dfn.de -all

DMARC

Configured
v=DMARC1; p=none; rua=mailto:dmarc-rua@uni-osnabrueck.de,mailto:rua@dmarc.brevo.com

DKIM

Selector mail
k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Universität Osnabrück: Gut studieren und leben!: Uni Osnabrück
Description
Die Universität Osnabrück ist eine Hochschule mit breitem Studienangebot in den Bereichen Wirtschaftswissenschaften, Jura, Geisteswissenschaften, Sozialwissenschaften, Naturwissenschaften, Künstliche Intelligenz (KI), Lehramt und mehr. Bewirb dich jetzt und entdecke unser Campusleben!
Final URL
https://www.uni-osnabrueck.de/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.uni-osnabrueck.de/
Version
3
Server
nginx
X-Powered-By
PHP/8.4.24

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
www.uos.de
Valid from
2026-07-23T09:17:14-05:00
Valid until
2027-02-07T08:17:13-06:00
Days remaining
181
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

1 active
✓
HSTSImplemented
—
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
131.173.17.203
176,29 ms
Cloudflare
1.1.1.1
131.173.17.203
290,15 ms
Quad9
9.9.9.9
131.173.17.203
245,28 ms
OpenDNS
208.67.222.222
131.173.17.203
145,77 ms
AdGuard
94.140.14.14
131.173.17.203
151,96 ms

IP, geolocation and ASNAssociated network information

131.173.17.203

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

a2411.mx.srv.dfn.de

Port 25: Closed/unreachable - 115.5 ms - 
Port 465: Closed/unreachable - 4019.5 ms - 
Port 587: Closed/unreachable - 4136 ms -

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