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83
Total
80
DNS
90
Email
73
Security
70
Network
100
Availability
Domainhpi.de
IPv42
IPv62
MX records2
StatusActive
Domain technical report

Hasso-Plattner-Institut | Hasso-Plattner-Institut

hpi.de

Das HPI ist eines der führenden Informatikinstitute, das durch Forschung, Lehre, Diversität und Kollaboration digitale Innovationen vorantreibt.

Generated: 2026-08-11T07:12:47-05:00 · Cached result

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IPv42
IPv62
MX2
NS4

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

4 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

2 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

60 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
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 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

2 record(s)
104.20.37.155
172.66.164.76

AAAA

2 record(s)
2606:4700:10::ac42:a44c
2606:4700:10::6814:259b

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 mail2.hpi.uni-potsdam.de.
20 mail3.hpi.uni-potsdam.de.

TXT

16 record(s)
"v=spf1 mx include:_spf.eu.messagegears.net include:spf.protection.outlook.com ip4:141.89.221.252 ip4:141.89.221.132 a:hpi.managed-otrs.com ~all"
"successfactors-site-verification=NWM5MGE5OGRiOTlkMzIxNGMzY2MyOTdmNjhlM2IxYzk4MzZjMzFjMzVlYmNhZWJhOGU3ZDMyYTA4NjY1MjliMw=="
"adobe-idp-site-verification=b6c090cb7d9b25e647241721d58e9c0f409043ed5fee95518cde252f23196f7a"
"MS=ms44865061"
"apple-domain-verification=yDgbolXT8d89WWs6"
"d365mktkey=gibcDyqoY9eO87F4rw4l9cv8VwirsnRjvRgJcjpDYYgx"
"perplexity-ai-domain-verification-wg1x04=CEGavzabOVuWMBfGqFlXoT1sK"
"google-site-verification=shC4y3WeoKxaiQGgPp51sXkcpV1kn9P451_OrWnxSLc"
"asv=9daefb29545c062d0113cd9fcb4d5c49"
"mentimeter-6eeac9ef-e4e9-467c-ab56-e0bc39841ab4"
"ahrefs-site-verification_035fb4d9bc76499cdbe44d36da7fac1c3c47cc082c72157b3dd0f0202e66b9cf"
"HARICA-eTN75usKDoRotJqF54V"
"MS=C81B4AE128C478099F4E9AE8116D784BEBDB871E"
"docusign=d73a39b3-8deb-464f-9ec1-ece9cb3e6121"
"miro-verification=d6f0f1c49588e224acbf943e34b7a112f01620e1"
"openai-domain-verification=dv-sEBgIrRGG6Ru1WdPcXAqJLxD"

NS

4 record(s)
www8.hpi-web.de.
dns1.hpi.uni-potsdam.de.
www7.hpi.de.
mail3.hpi.uni-potsdam.de.

SOA

1 record(s)
dns1.hpi.uni-potsdam.de. admin.hpi.uni-potsdam.de. 2026081001 28800 7200 604800 3600

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

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 mx include:_spf.eu.messagegears.net include:spf.protection.outlook.com ip4:141.89.221.252 ip4:141.89.221.132 a:hpi.managed-otrs.com ~all

DMARC

Configured
v=DMARC1;p=reject;rua=mailto:dmarc-adm@hpi.de;ruf=mailto:dmarc-forensics@hpi.de

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwzHoPpmFk8jvWiHCVS71RtoN9VI2BB8w7ez5SIJvRFqJg9ggG5LWQo7+tx3p1xOMKRxasnUtiXO6eMx4yxpUShv1My7nXhNm8bBL7RYLX92Z7gTOmoFv13ITprV67q0/ekfMDxLwKffyr4RdDnAobXvtVmZLJ+trcSFgD18R8R23HET0RIr/B3on6xw6u8abQpj1Olh38ronVp7NZp2FEDktJmOf/hhBUTeN3hmRtukzeWn99irHJVppIe9fVdxRh1C1ihRu/Gv/MKYCzFQjI1jvzp2BRP46YT7ZpcT+glCdvj8R+8EtTFnF8ala9AYFkSlr+m2iawpYxGB5KyxVrQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Hasso-Plattner-Institut | Hasso-Plattner-Institut
Description
Das HPI ist eines der führenden Informatikinstitute, das durch Forschung, Lehre, Diversität und Kollaboration digitale Innovationen vorantreibt.
Final URL
https://hpi.de/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://hpi.de/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
hpi.de
Valid from
2026-07-12T10:47:40-05:00
Valid until
2026-10-10T11:47:37-05:00
Days remaining
60
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
—
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
104.20.37.155, 172.66.164.76
159,57 ms
Cloudflare
1.1.1.1
104.20.37.155, 172.66.164.76
280,97 ms
Quad9
9.9.9.9
104.20.37.155, 172.66.164.76
206,11 ms
OpenDNS
208.67.222.222
104.20.37.155, 172.66.164.76
1.472,06 ms
AdGuard
94.140.14.14
104.20.37.155, 172.66.164.76
433,68 ms

IP, geolocation and ASNAssociated network information

104.20.37.155

No data
success
No
country
region
city
asn
organization
isp

172.66.164.76

Identified
success
Yes
country
United States
country_code
US
region
California
city
San Francisco
latitude
37.7749113
longitude
-122.4185412
asn
13335
organization
Cloudflare, Inc.
isp
Cloudflare, Inc.
timezone
America/Los_Angeles

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

mail2.hpi.uni-potsdam.de

Port 25: Closed/unreachable - 117.8 ms - 
Port 465: Closed/unreachable - 4136.1 ms - 
Port 587: Closed/unreachable - 4017.7 ms -

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