Security checks on a number of Websites and email Servers.

# name url internet.nl/
test-site
internet.nl/
test-mail
dnsinspect
.com
mozilla.org/
observatory
ssllabs
.com
grade TOTAL
grade
date Initiate
test
1 DeLaat.net delaat.net 100 100 100 80 A+ 100 480
2025-01-17
2 UvA SNE master os3.nl 97 100 91 80 A+ 100 468
2025-01-17
3
SURF surf.nl 100 100
84 75
A+ 100 459
2025-01-29
4
TNO tno.nl 100
100
84 70
A+ 100 454
2025-01-29
5
Tilburg University tilburguniversity.edu 98
98 91 70
A 90 447
2025-01-29
6
Maastricht University maastrichtuniversity.nl 100
96
72 75 A+ 100 443
2025-01-29
7
Radboud University ru.nl 78
65
90
105
A+ 100 438
2025-01-29
8
Utrecht University uu.nl 100 82
93
60
A+ 100 435
2025-01-29
9
Leiden University universiteitleiden.nl 86
72
88 80
A+ 100 426
2025-01-29
10
CWI
cwi.nl 69
93 88 75
A+
100 425
2025-01-29
11
Erasmus University Rotterdam eur.nl 86
78 77 75
A+ 100 416
2025-01-29
12
Protestanse Theologische Universiteit pthu.nl 100 64
69
80
A+ 100 413
2025-01-29
13
University of Amsterdam uva.nl 84 82
81
60 A+ 100 407
2025-01-29
14
TU-Delft tudelft.nl 80
62
88
75 A+ 100 405
2025-01-29
15
NIKHEF nikhef.nl 80
77
67
80
A+ 100 404
2025-01-29
16
Groningen University rug.nl 80
80
79 65
A+ 100 404
2025-01-29
17
Hogeschool van Amsterdam hva.nl 84
72
87
60
A+ 100 403
2025-01-29
18
Open University ou.nl 86
78 86 45 A+ 100 395
2025-01-29
19 Vrije Universiteit Amsterdam vu.nl 71 72
88 70 A 90 391
2025-01-29
20
Wageningen University wur.nl 78 82
90
50 A 90 390
2025-01-29
21
Eindhoven University tue.nl 80
82
57 70 A+ 100 389
2025-01-29
22
Twente University utwente.nl 61
82
45 70 A+ 100 358
2025-01-29
23 Theological University of Apeldoorn tua.nl 52 77
97 30 A+ 100 356
2025-01-23
24 Theological University Kampen tukampen.nl 96 44
84 25
A 90 339
2025-01-29
25 University of Humanistic Studies uvh.nl 49
73
82 55
B
70 329
2025-01-23
Grading (see grade.py)
100 90 85 80 70 65 60 50 45 40 30 25 10
A+ A A- B+ B B- C+ C C- D+ D D- F
The grading of dnsinspect.com is processed differently. The grade for dnsinspect is the total score from that website minus 500.
Websites with DNS and ip Tools that can check servers, Internet protocols and implementations
INTERNET MAIL DNS(SEC) DANE/DKIM/SPF/MTA-STS Certs/TLS REST
internet.nl observatory.mozilla.org www.dnsinspect.com www.huque.com/bin/danecheck crt.sh delaat.net/setup
IPv6-test.com
dnschecker.org aykevl.nl/apps/mta-sts/ ssllabs.com delaat.net/ipv6
test-ipv6.com
intodns.com https://www.dmarcanalyzer.com/dkim/dkim-checker/
www.sslshopper.com http2.pro
ip6.nl
dnsviz.net mailto:check-auth@verifier.port25.com
www.hardenize.com w3dt.net


zonemaster.net
immuniweb.com stat.ripe.net


dnssec-debugger.verisignlabs.com