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Total

DNS

Email

Security

Network

100

Availability

Domaintudelft.nl

IPv41

IPv60

MX records1

StatusActive

Domain technical report

TU Delft | Technische Universiteit Delft | Challenge. Change. Impact!

tudelft.nl

Ontdek TU Delft, de grootste en oudste technische universiteit van Nederland, met toponderwijs, toonaangevend onderzoek, 16 bachelors, 30+ masters en impact voor een betere samenleving.

Generated: 2026-08-08T22:30:00-05:00 · Cached result

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IPv41

IPv60

MX1

NS5

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

5 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

182 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: tudelft.nl

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/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

130.161.128.82

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

10 tudelft-nl.mail.protection.outlook.com.

TXT

20 record(s)

"MS=ms66592311"
"HARICA-svOKy8ChPYfvbMCCCgv"
"google-site-verification=vlPyHrqp8W5EwG3sBPAoZXrMFzyYmVJeDlDshyLCrzk"
"adobe-idp-site-verification=6c308adba5fba6d4295d8d092b40f332747dd3b7896740e9ee3a9c87e8691bb1"
"HARICA-9s6oKKJ124kmU6v3f6A"
"miro-verification=19371c38bfc06be58d667cbb59a02508a880607d"
"L4Rcgp2aufV3yNQT7HZ7nmdmW+S8VVsOkBuh2Rk4Z7WKyHrLcd/aKCgVE+sihdcNsi/LkDeS8otItlX8kSURUA=="
"miro-verification=034228b8046d801ff6579bb93100816ce0fac54f"
"figma-domain-verification=608b37abc404e00a10b2771e20c76b415cd1832b5faf4e3c500a545808eb4803-1775651511"
"successfactors-site-verification=NGMxMTBlMzQ5ZmFiZWRiMTU1ZWVkZDk4MTczYzE5ZDhhZTVhNzI4NTI4OGZjYjI4OTc2YjYyM2RhNGNhZWI4Zg=="
"v=spf1 ip4:130.161.131.0/24 ip4:131.180.77.44 ip4:52.59.111.152 include:spf.protection.outlook.com ip4:46.31.188.52 ip4:212.83.209.198 ip4:212.83.209.204 include:spf.afas.online ip4:94.143.211.206 ip4:94.143.211.207 include:spf.recruitmail.com " "ip4:46.31.48.0/21 include:spf.topdesk.net include:spf.faqtory.nl include:a._spf.brightspace.com ip4:136.144.199.28 ip4:136.144.226.32 ip4:77.74.54.216 ip4:213.206.232.0/27 ip4:185.136.64.128/27 ip4:185.136.65.128/27 include:spf-x-tudelft-nl.dataduiker.app" " ~all"
"amazonses:iyPCyEjMv6YpdMhVuagmzM+6PIiSZt+kj9J0DnmImnQ="
"EYCG94TF05LGAIXGKNS3B4SXZ796W7SPSHUPP1E3M"
"apple-domain-verification=TWilLuVqEqmPHPlP"
"sendinblue-code:ef5755c78c2226424706a65a2413f0a1"
"HARICA-aXJ2Kuvqc5hU8cVsyIR"
"openatts a=dns-did; p=did:ethr:0x49264cd8041010adf43a926436e0ac38c053c066#controller; v=1.0;"
"google-site-verification=xwRqT1z_-EE597mEH4Qfh_TQTFYhTS-bWoYM009P-E8"
"google-site-verification=_nk7k44TtWKQJSgLYer_J68BmKIY83V9Heax6u7oRRA"
"jamf-site-verification=Ddcd23-bTSJECc10j2URmw"

NS

5 record(s)

ns1.tudelft.nl.
ns1.surfnet.nl.
ns2.surfnet.nl.
ns1.zurich.surf.net.
ns2.tudelft.nl.

SOA

1 record(s)

ns1.tudelft.nl. hostmaster.tudelft.nl. 2024527513 36000 3600 2419200 3600

CAA

12 record(s)

0 issue "sectigo.com"
0 issuewild "harica.gr"
0 issue "www.digicert.com"
0 iodef "mailto:abuse@tudelft.nl"
0 issuemail "harica.gr"
0 issue "awstrust.com"
0 issue "pki.goog"
0 issue "amazontrust.com"
0 issue "harica.gr"
0 issue "amazon.com"
0 issue "letsencrypt.org"
0 issue "amazonaws.com"

DS

1 record(s)

58121 8 2 3C1CA6A6E37B56E628186ED991750682B8476915EAB7963D329309E8 97BAF49E

DNSKEY

4 record(s)

256 3 8 AwEAAeFz0BL4NMQgg3eIvKk3gnvh5AA4f/eB4xGN7MPiwkT7s/WllqLY 9KZrvHApAq6pC9sNuk6eFvoNeWb1NVHjOuEGuKeDejtJZ2mXo9XVGR1z FqHQOIOXjcaNtlruv4J7ctQaSYdBJXIajltdla2tDdFmKePh20i3CujU g8FktEFF
256 3 8 AwEAAeCcqPXDPxCBgZadkc02nYlZKQccevGACbh8wRJdmRGgzZIHT9QJ ZWugwPUqh1me//AYI6iqZj5WqKIbRPBS6ANwizGr45C/Eq34mPppPGDr /cszLgwAKnAK8OgGVs80WHMfCommNVs9Z9bNgRR59KQ3Sg3qqD/DCRz/ be1McMoT
256 3 8 AwEAAa4wpsHdi1kpmjTLFf0EvKXJU5Ctau/BhYcRO3gFEnJ0TiIIcbb4 oFCXB5Y9uTJcQ+j8FA8UbkQ0FON+PvyQcL+kaLY6SwJnf/OJA1qTQk+A gRu3WnZp4QXtFSAokE1Q0beWMJNw7P6O3p9zRO0xs1itT+zPNs9Rlw4R Z0lEz/8z
257 3 8 AwEAAc1+rmVTGuAp+dno+QuwpNO9gST4VdT3QyqtU1hzh8kfW3sUXXfO Ni28ugqJtS/uKvGU4n73PVZ7Bh4JIt6v6E4ZTBVTTBt4WyM+mumYUBbh 6LRYbPkzWHTh4Yb0kfcvgXN6wZoMJiBw7nzz/zLz+U5i+XfeET3Du0LH l9zdhb2x+zZOc4FnQDgntEo/f1EVGatqzh0AtvhgOqWYX7TUYNZQHO26 YbAl+CchChx3NJTNvnbhvs/1cBBUKSaes4Li+F0bjlgtpd1ZBvb1bogr NllGpLYtRqU2qc2Y6KWa5OrIhJsy0nkwaKzvjgJoUeHR5NsADXUiZb0U v8tXwtA8U8E=

RRSIG

5 record(s)

SOA 8 2 3600 20260813012615 20260809002615 19789 tudelft.nl. k5kmS8jZWva458BJcwnsVZp86EU9eJsfIZsJBa9wNeaPRlNo6hkpgiTm 9Rc2++OpCyMPcuqaniwCPRjcH/6Gi3cgehZH3zcSlED8sPIBXBeDiQlN 5UCrn8NlFIW69upVjqC2/eSIqg51mYYt853okBi3ZUVXLWx1ofEfEruh keo=
TXT 8 2 3600 20260812210316 20260808210128 19789 tudelft.nl. VOD1gre78nyWxnHjqsLm7u9IuGaO+XEaE3aUz/gVv3+b8CecrklnyfKp LYbMMu4UDcPHQwHy1bUe6/UuCkiyhX0k60Uyeyr994BP8GTg9Tua3jH3 QjsZBWuFBOqd5FF9PFDd530MtJmmMvKK7RbwSlr14Xc4wvsIrKVLWlhU E8Q=
MX 8 2 3600 20260812192429 20260808190844 19789 tudelft.nl. PW3axdkn5tY98yun1hFZLUHEtc3b5d5KfPSCct6lOUY+McVtf7MebT67 U72ywoiaxJk1JRDuJkgpTZjwmKxKxWZk0VjHFSVmGr8TW6qUKkm5P+l9 XHM/8sasdIBSm3R+myCEY/JBu3CymU3ab/TVICZb7sJJs29OCvmMhd2p Mg8=
DS 13 2 3600 20260904094352 20260807140754 467 nl. f+6lksGG0AUIqxVtnyztvPNofCNH7kS0cJg/XInJSIy1ZnU0wvFCLvBx 7Am8HcnwIDQQBXu8dx8WtIgNKQS/FQ==
CAA 8 2 3600 20260812185242 20260808185137 19789 tudelft.nl. SvszCj/itelZW+f0/vp7SuzPli5UFKMe8xuMRFo7xOE93hgXhivpjJ4S EMfUtwMChcljaFIkYIWfdyht1S6AXjEVysOgOHYaCvxQix0Us3TBKsOQ bArqRPia0eFXXXWAgDBTokTQZtzP+YivLxGoWQpxQNwyr04eF9wig8/O vlI=

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 ip4:130.161.131.0/24 ip4:131.180.77.44 ip4:52.59.111.152 include:spf.protection.outlook.com ip4:46.31.188.52 ip4:212.83.209.198 ip4:212.83.209.204 include:spf.afas.online ip4:94.143.211.206 ip4:94.143.211.207 include:spf.recruitmail.com ip4:46.31.48.0/21 include:spf.topdesk.net include:spf.faqtory.nl include:a._spf.brightspace.com ip4:136.144.199.28 ip4:136.144.226.32 ip4:77.74.54.216 ip4:213.206.232.0/27 ip4:185.136.64.128/27 ip4:185.136.65.128/27 include:spf-x-tudelft-nl.dataduiker.app ~all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:dmarc-reports@tudelft.nl; ruf=mailto:dmarc-reports@tudelft.nl

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAydGx3k214wjqhdf5OBZqkEXhZgHJ70m0Lfi8orpvf2NEExvyQMHCKCeYW1Qpq07VIn+hlhu2AiLP9Uo/mCuS/csQR+Q9OAh7FXEkAYop7/sW22xekoGVVkqZn3nBnp5/epok2axFNM4OIXFm1/82fXyhke9IXtCwAshL7MPodqmWrFQ8rFOfhtYJL/RiGZFmDrNikZqSGwPKuWRJc6pml4fMmh7atUu2Qht3cB3Yxp/wBS/PV0VKEV+G0sWAP9IdMlEHOR80vtb/Er1aqnSwElyVL5ecU8sHDpqXsTAk7pIBA84C38EpxvpSgSX8Yfgf1LlBdBPDnW/56MY/rk55bQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

TU Delft | Technische Universiteit Delft | Challenge. Change. Impact!

Description

Ontdek TU Delft, de grootste en oudste technische universiteit van Nederland, met toponderwijs, toonaangevend onderzoek, 16 bachelors, 30+ masters en impact voor een betere samenleving.

Final URL

https://www.tudelft.nl/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.tudelft.nl/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Hellenic Academic and Research Institutions CA

tudelft.nl

Valid from

2026-07-23T09:55:59-05:00

Valid until

2027-02-07T08:55:58-06:00

Days remaining

182

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

130.161.128.82

190,23 ms

Cloudflare

1.1.1.1

130.161.128.82

153,83 ms

Quad9

9.9.9.9

130.161.128.82

148,19 ms

OpenDNS

208.67.222.222

130.161.128.82

955,10 ms

AdGuard

94.140.14.14

130.161.128.82

140,89 ms

IP, geolocation and ASNAssociated network information

130.161.128.82

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

tudelft-nl.mail.protection.outlook.com

Port 25: Closed/unreachable - 28.4 ms - 
Port 465: Closed/unreachable - 4046.3 ms - 
Port 587: Closed/unreachable - 4050.9 ms -

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