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: Fri Aug 23 04:47:28 2019

Summary Statistics

The current numbers from the DANE/DNSSEC survey are:

Total number of DS Resource Record Sets:
9876446
Total number of working DNSKEYs:
9754777

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
27822525735
220570125737
409287425738
247051257310
3070213257313
79912257314

ZSK

zskalgsflagsprotoalg
2564625635
218880125637
402497225638
246888256310
1751227256313
79019256314

RSA key size distribution

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

KSK

kskdomainsbits
530944096
52807232048
2513101536
40371280
12362191024
6790512

ZSK

zskdomainsbits
143204096
4873562048
2562701280
60911701024
6588512

RSA exponent distribution

domainsexponent
6812817\x010001
10784\x0100000001
395\x03
98\xff39
34\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
boston95209520100.00
bible12581258100.00
br56431556452599.96
xn--j6w193g3194319699.94
mx166941672099.84
ovh207022073599.84
hk167321675999.84
is2184218899.82
icu4984499599.78
bzh1530153499.74
lu1710171599.71
de20342220408099.68
fr40875941019299.65
paris2811282499.54
re3673369499.43
no39136239379999.38
nl3146724316689999.36
art2059207399.32
fi5872591399.31
ee3274329899.27
be29336229557299.25
app372323753099.21
hu12409712520199.12
pro2577260199.08
ch895239040699.02
sk4598464499.01
tv3767380798.95
studio1241125598.88
cloud6123619398.87
it6673675598.79
gov1168118398.73
eu48806449455098.69
cz65352266226898.68
biz204702076398.59
agency1451147298.57
io168971714498.56
one147371495398.56
amsterdam4881495398.55
se72886773993598.50
pt118781206698.44
rocks1054107198.41
immo1664169198.40
life1010102898.25
bank2444248898.23
me115571176798.22
info461694701798.20
dev204102078598.20
org11369211584398.14
design1332135898.09
nz1365139298.06
nu978889986798.02
net15679316009797.94
dk260072655697.93
com1262356128930597.91
network1257128497.90
mobi1256128497.82
solutions1015103897.78
tech4430453397.73
us8989920197.70
world2181223397.67
kr3821391397.65
nrw2229228397.63
live988101297.63
cc2124217697.61
lv3499359397.38
brussels986101397.33
pl44214945445597.29
blog1041107097.29
at9598986997.25
li1471151397.22
xyz111871151297.18
uk364153754596.99
es177101826596.96
email2425250496.85
store3243335496.69
space1894196096.63
ca4641480496.61
club2525261996.41
co108191124596.21
website1061110596.02
online9439983595.97
frl3745390995.80
site2788291795.58
in3521370295.11
ru3414360894.62
ro1230131093.89
shop106871168491.47
au1433168585.04

Thank you to data contributors!

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