Overview

The following DNSSEC deployment statics come from the work of Viktor Dukhovni (Two Sigma), published by Wes Hardaker (USC/ISI) as part of the DNSSEC-Tools project.

Note: click on column names to sort the table.

Last Updated: Tue Oct 22 04:47:29 2019

Summary Statistics

The current numbers from the DANE/DNSSEC survey are:

Total number of DS Resource Record Sets:
9967429
Total number of working DNSKEYs:
9850695

DNSSEC Trend Graphs

The following graph depicts the number of signed delegations from public suffix list domains in our dataset.

DANE Trend graphs

Domains with signed MX and DANE records

The following graph depicts the number of domains that have deployed DANE/SMTP. Specifically, their zone is signed, their MX records all point to hosts that have DANE TLSA records.

Zones Hosting DANE Mail Servers

Many of the domains in the previous graph outsource or aggregate their mail servers such that the MX records point to out-of-domain mail servers (i.e. externally hosted mail providers). This graph depicts the number of DNS mail provider zones that have DANE records deployed for them.

DS Record count growth

The following graph shows the growth of observed DS record sets over time (i.e. the number of signed zones):

DNSSEC Deployment Statistics

The following tables summarize the deployment size and states of various DNSSEC parameters.

Parameter frequency

DNSKEY parameter frequency (1000 or more instances), by zone count:

KSK

kskalgsflagsprotoalg
28307525735
220430225737
409629425738
252420257310
3148513257313
79611257314

ZSK

zskalgsflagsprotoalg
2569525635
218707725637
402859025638
252264256310
1785017256313
78681256314

RSA key size distribution

RSA key size distribution (1000 or more instances), by zone count:

KSK

kskdomainsbits
626304096
54035152048
2449021536
40081280
11223951024
7039512

ZSK

zskdomainsbits
250944096
4877592048
2498481280
57238831024
6598512

RSA exponent distribution

domainsexponent
6812605\x010001
23179\x0100000001
335\x03
162\xff39
32\x40000003
19\xffff

Breakdown by TLD of secure delegations

This table shows the number of delegations with DS records (and thus indicating the subzone is signed). The table also shows the number of succesful DNSKEY lookups for domains under the given TLD, meaning the number of zones that the DNSKEYs within the subzone could be both retrieved and verified as authentic with DNSSEC. Note that reasons failure include both failures in DNS itself for the subzone (e.g. no reachable name servers) or because DNSSEC validation of the results failed.

(Only TLDs are considered where the number of securely delegated subzones is greater than 999)

TLDworkingtotal-DS%working
boston95219521100.00
is22102210100.00
bible12041204100.00
br56845256866899.96
xn--j6w193g3225322799.94
mx165071653299.85
lu1810181399.83
hk166681669799.83
ovh199011993899.81
icu5008502599.66
fr40526140668599.65
de20235220310699.63
fi7795782799.59
paris2773278799.50
ee4327435099.47
re3663368399.46
bzh1533154299.42
nl3156457317689099.36
be29636529847399.29
no39093939380399.27
art2122213899.25
app393583966599.23
ch936419445299.14
pro2697272199.12
hu12211712333299.01
it7861794398.97
pl43175543680798.84
tv4011405898.84
sk7138722398.82
gov1161117598.81
eu49298449895598.80
studio1297131398.78
cz66768967604298.76
family993100698.71
io174291768998.53
biz203632067198.51
amsterdam4784485898.48
mobi1285130598.47
se72690973875198.40
agency1476150198.33
name983100098.30
dk221522255698.21
life1087110798.19
network1346137198.18
immo1669170098.18
rocks1124114598.17
me118961212698.10
org11542911766298.10
dev239752444598.08
info465634748498.06
shop8942912098.05
nz1456148598.05
xyz156701598798.02
nu10337510551697.97
live1058108097.96
cc2194224197.90
tech4628472897.88
net15879816226797.86
com1306864133587597.83
us9232945097.69
pt102831053297.64
one148351519697.62
kr3710380397.55
cloud6244640197.55
solutions1066109397.53
link977100297.50
design1367140297.50
world2286234697.44
nrw2230228997.42
brussels992101997.35
work1019104797.33
blog1096112797.25
at108671117697.24
site2850293597.10
uk369313805597.05
es180061859196.85
email2512259496.84
space2079214796.83
li1516156796.75
co119161231896.74
store3377349396.68
lv3504364296.21
online105411095996.19
ca4987518896.13
website1140118796.04
club2642275196.04
frl3769393195.88
in3684388194.92
ru3518372794.39
ro1285137393.59
bank2212250888.20
au1507174286.51

Thank you to data contributors!

We thank the following organizations that have submitted data that helped make these statistics possible: