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82
Total
90
DNS
90
Email
65
Security
50
Network
100
Availability
Domainuni-bielefeld.de
IPv41
IPv60
MX records3
StatusActive
Domain technical report

Universität Bielefeld

uni-bielefeld.de

Forschungsstark mit internationaler Ausrichtung und innvovativen Lehrkonzepten ➤ Komm zur Uni Bielefeld

Generated: 2026-08-09T07:22:53-05:00 · Cached result

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IPv41
IPv60
MX3
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

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

93 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: uni-bielefeld.de

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)
129.70.240.4

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
50 a2631.mx.srv.dfn.de.
50 c2631.mx.srv.dfn.de.
50 b2631.mx.srv.dfn.de.

TXT

8 record(s)
"mindmanager-verification=c59b5cfe5aa2bef46104537a9486abf3237366c8074a1a14a3bf7843e5b2bf25"
"google-site-verification=T5xNbHbPGhlsAAVo-jhf9bCnqHu--GISvf6fh4J2GDs"
"sendinblue-code:a35d677f130498f670bd551fe31ae3f4"
"apple-domain-verification=t4s8f87S8M1zYndy"
"HARICA-CJElOZH7BDuodcd0Fhg"
"adobe-idp-site-verification=3d1e550ccbef00ecf478dfb339156a49d8b78166961a42320ece2ed4a902fbcd"
"MS=8764D5ABE038806624DD4192154D0344B26D3419"
"v=spf1 ip4:129.70.4.0/24 ip4:129.70.204.0/24 ip4:129.70.208.0/24 ip4:129.70.43.192/26 include:spf.sendinblue.com include:_spf.o263.mx.srv.dfn.de include:amazonses.com ~all"

NS

3 record(s)
ns1.uni-bielefeld.de.
ns2.uni-bielefeld.de.
dns-2.dfn.de.

SOA

1 record(s)
ns1.uni-bielefeld.de. hostmaster.uni-bielefeld.de. 803358033 10800 1800 2419200 3600

CAA

5 record(s)
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 iodef "mailto:hostmaster@uni-bielefeld.de"
0 issue "pki.dfn.de"
0 issue "harica.gr"

DS

2 record(s)
7884 10 2 133B4A898DB8FAD4CA05B0BA4BEADA026CC52F88D54BE824CE7340B1 A6AAA3E5
61267 10 2 D34A12872F52511D6E8B9C79260C339313AD306A36DAA459DF2F9EB1 1E034AF8

DNSKEY

3 record(s)
256 3 10 AwEAAbmwdhfoWQ/G5qswVm0+3IfOjkL1g04hXzHK2mBvT40Psh322z19 lyHztYchDLA+aDJOHZEfQZibcOY4FLgUuQ4/7fNtjq/fVi/l1AeygWzf AmPNxN2ZKz4BXMxk3y92m+/i40hQivv64qv/2WHz014H9VkaP1dEnueN skK/7lL5yCG4/So1VTZgEw8uOsonikIk/ePbImde77C/GJpC6Ip2Vczk L3s9MAR9SWD1ZFdtybCiASUYYrcNxWLv7svP1EYIFFpgsnjzZC/auTq7 dwNMCEULXCtI+9cMGidVRyq5A7Yx24sHkA/bHrPuvnhNLhCuqU+KPTK2 QDq4UoocKJk=
257 3 10 AwEAAdh5UCJR1TS/5SuCsDDLJfBgq0rrWeJiE2p8Jg4g18xQ3q9cK0pr I7km2qxfdzj9BjrHZVkgy1D6+A+I0V06AI19E5Ekl6/XG1gvF3KAgGV1 jiraAQyHQ1IEYYFhD9uYJfJJEHsCTvLv9yA4a31TYIVHKwdI+ypSgfsj PmiqGN2HBN848ellCd3oIYzW8qw//5Qbw+bSrZ6DspU96NrO+3185g2w LcOCESk9g3UF2aTTi/IsB9yivgYvl9y4NOg/CEqZEDeWBA/GFwsR7N49 ZBT0WDR8EdcnZdwK92KLuc3pzGVfOMddg+lIXu6SctWpgumOsy/0cXkz ql01OByKAAE=
256 3 10 AwEAAauEcT+YO6xQ3kSdttsjOTMM3it951Zh1vZrTYsgaOQKhPMuX1ki mGhr2UKOyF30Lwec6jzGKD5mCUouqh+8cpNpdaoUKamZnMy1R0cIYsP8 QmrOHkjMSEXAG/UIubVbCv8H5zpkKoxy/DDN1KJPBkhOiTDKviVJ+d6C /KtBElrehrmnAC6OoLlxKiic9MYgyvQksrLwzE/X8bbu+P7nxqwcc8/p KBULDtBgU4RXA4o1mNli7e9TWxsV/+ydW5wg+egiooLpTcy1TR4CUePF xsaY+0eRAqIICsMh9QU3YBJwdn1lHUtgrmpKSYA7Im/PepR3kf4qdrcG qI6wAn575N8=

RRSIG

3 record(s)
DNSKEY 10 2 3540 20260812092858 20260805221323 61267 uni-bielefeld.de. U94Q/tHMSfsU+zs1dQy6k/CWlc4crhUVx3RCmqALIk5Px1XXbbEd6nzy KKXa0+ANKbTBkaI2CgeHZ/cub3iy0U0nZyX3nOUnOnvIfh+M6wJu09nE g++qsayqAvYWS2i5/dKDeB6k50v2hFI7eEMJOSSlBqUU0tovjm0q3G8q /o4rJs6N9rF4eKSQDgIkUAbEu3N5ASLSgr9PHJKRvxWhDjoO5dcTJS0f bb67RAJS8TGbLqL2s9i9+faZAmKpVtnhM3cdZy8cYjamwliD2cnEVwDw BpY62Kfy3e1q+/4lLyjrXj+LEEjdQfnjPTTZ4E79QGene4qUEFHjL5q8 Afps5Q==
NS 10 2 86400 20260813015126 20260803014615 40838 uni-bielefeld.de. e1IXXnikUgAkQCXiEOwWbj1Ud+Hkb4rzEEiE9gz89qDqTZG/PvXFKwRd CGEyoYWSbzg3Cd/vVN9T9kj+ZeYrKKLRYmgGQmc6Fb/Mocz0wc0J1LaT XEb87L6LQe9K2xBVI/8zXBOigSP1hH+YbrjH25WcALABqKBRCoP7qP7c g8wBcIGRb72p/S3HqBls4UnBARnZ6F2cchn0bpu/pbF7CWqB2Hs3LWIf Wu/lX/OjjiuJ/5q9AEfsi7bJrvzzzDYriAih8huPyRfGc87SxDnT7653 EJ0wBM1vKddT8MxUN8x2ucnGgJHaFonEz8fojiMXck18mdR+Wyy5uSLA oO86xA==
DS 8 2 86400 20260817120903 20260803103903 32911 de. PF5zLC0OIhCbOdTmJWIlVFg9kttuWTgmBDoaVookXGrWc9fmf0QBYvwf hgD3ZX9jVWNTMOEWRixP9U1v6KiJiFE0yVGwpbCNSwZq24lwp8mtJqs9 3QZ1I76WQ+5EqLaPdKE2fV8JfkeNODP2EtOIVwqrn9yHUnAvZMO626gK Dck=

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 ip4:129.70.4.0/24 ip4:129.70.204.0/24 ip4:129.70.208.0/24 ip4:129.70.43.192/26 include:spf.sendinblue.com include:_spf.o263.mx.srv.dfn.de include:amazonses.com ~all

DMARC

Configured
v=DMARC1; p=none

DKIM

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

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Universität Bielefeld
Description
Forschungsstark mit internationaler Ausrichtung und innvovativen Lehrkonzepten ➤ Komm zur Uni Bielefeld
Final URL
https://www.uni-bielefeld.de/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://www.uni-bielefeld.de/
Version
2
Server
Roxen/6.1.248-r5
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
www.uni-bielefeld.de
Valid from
2025-11-11T00:51:30-06:00
Valid until
2026-11-11T00:51:30-06:00
Days remaining
93
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

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
129.70.240.4
44,65 ms
Cloudflare
1.1.1.1
129.70.240.4
134,93 ms
Quad9
9.9.9.9
129.70.240.4
24,29 ms
OpenDNS
208.67.222.222
129.70.240.4
683,72 ms
AdGuard
94.140.14.14
129.70.240.4
168,83 ms

IP, geolocation and ASNAssociated network information

129.70.240.4

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

a2631.mx.srv.dfn.de

Port 25: Closed/unreachable - 114.2 ms - 
Port 465: Closed/unreachable - 4010 ms - 
Port 587: Closed/unreachable - 4123.5 ms -

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