Websites with HARICA certificates

0.03% serve a certificate issued by HARICA 7,603 of 24.37 million domains that completed a TLS handshake, DNS sweep of Sep 2026

High-authority sites

Ordered by Open Page Rank, the domain's authority score from the open web link graph.

#	Website	OPROpen Page Rank
1	mail.ru	8.98
2	ok.ru	8.90
3	max.ru	8.86
4	cnrs.fr	8.82
5	mpg.de	8.81
6	fraunhofer.de	8.79
7	dzen.ru	8.75
8	bka.gv.at	8.72
9	inria.fr	8.68
10	unibo.it	8.68
11	niedersachsen.de	8.65
12	education.gouv.fr	8.64
13	vkvideo.ru	8.64
14	rki.de	8.61
15	dsb.gv.at	8.60
16	rug.nl	8.60
17	ucm.es	8.60
18	csic.es	8.59
19	archives-ouvertes.fr	8.58
20	fu-berlin.de	8.58
21	uni-heidelberg.de	8.58
22	univie.ac.at	8.58
23	jivosite.com	8.57
24	utwente.nl	8.56
25	wur.nl	8.56
26	rwth-aachen.de	8.55
27	uio.no	8.55
28	kb.se	8.54
29	kuleuven.be	8.54
30	riksdagen.se	8.54
31	kth.se	8.53
32	su.se	8.53
33	uni-hamburg.de	8.53
34	uni-stuttgart.de	8.53
35	agriculture.gouv.fr	8.52
36	hu-berlin.de	8.52
37	rivm.nl	8.52
38	upm.es	8.52
39	uni-bremen.de	8.51
40	unizar.es	8.51
41	public.lu	8.50
42	universiteitleiden.nl	8.50
43	tu-dresden.de	8.49
44	uni-tuebingen.de	8.49
45	hal.science	8.48
46	tno.nl	8.48
47	unirioja.es	8.48
48	ki.se	8.46
49	uni-bonn.de	8.46
50	uni-muenster.de	8.43
51	us.es	8.43
52	ugent.be	8.42
53	unipd.it	8.41
54	inserm.fr	8.40
55	education.fr	8.39
56	uni-frankfurt.de	8.39
57	dlr.de	8.38
58	polimi.it	8.38
59	ugr.es	8.38
60	tu-berlin.de	8.37
61	uni-freiburg.de	8.37
62	tuwien.ac.at	8.35
63	uib.no	8.35
64	uni-hannover.de	8.35
65	uni-leipzig.de	8.35
66	unimi.it	8.35
67	uv.es	8.35
68	cvut.cz	8.34
69	ruhr-uni-bochum.de	8.34
70	tcd.ie	8.34
71	tu-darmstadt.de	8.34
72	bne.es	8.33
73	cas.cz	8.33
74	istat.it	8.33
75	uw.edu.pl	8.33
76	eur.nl	8.32
77	unipi.it	8.32
78	cbr.ru	8.31
79	persee.fr	8.31
80	maastrichtuniversity.nl	8.30
81	uni-trier.de	8.30
82	udc.es	8.29
83	univ-tours.fr	8.29
84	uc3m.es	8.28
85	ens.fr	8.27
86	enseignementsup-recherche.gouv.fr	8.27
87	inrae.fr	8.27
88	jivo.ru	8.27
89	sciencesconf.org	8.27
90	ua.es	8.27
91	uni-due.de	8.27
92	unitn.it	8.27
93	upc.edu	8.27
94	bzga.de	8.26
95	charite.de	8.26
96	cwi.nl	8.26
97	daad.de	8.26
98	fau.de	8.26
99	kb.nl	8.26
100	uni-wuerzburg.de	8.26

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Websites with HARICA certificates

High-authority sites

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