Top-Level Domain

.com

Aggregated statistics for the top-level domain

Apex domains

—

we've enumerated

Subdomains seen

316,711,504

CT + DNS + brute

TLS certs

1,626,631

naming .com

Hosting ASNs

—

distinct origins

Apex domains with the most known subdomains — large orgs, telecoms, hosters.

Apex	Subdomains
amazonaws.com	79,043,024
azure.com	9,268,665
kafka.us-east-1.amazonaws.com	4,059,581
cisco.com	2,956,225
ondemand.com	1,782,589
kafka-beta.us-east-1.amazonaws.com	1,639,074
microsoft-int.com	1,364,036
cloudflaressl.com	975,931
hubspot-at-test.com	749,492
mmscloudtest.com	698,111
zendesk.com	606,352
arconazure.com	372,702
myftpupload.com	362,079
cloudflarestorage.com	348,050
dynamics.com	331,616
splunkcloud.com	316,592
ava.us-east-1.amazonaws.com	302,225
waconazure.com	287,403
mscds.com	221,485
herokuspace.com	179,757
ups.com	158,756
herokusnitest.com	151,032
amazongamelift.com	149,067
caddy-one-ibe-redirect-proxy.eu-central-1.elasticbeanstalk.com	146,912
microsoft.com	127,123
asuscomm.com	103,137
a2z.com	98,358
loxonecloud.com	93,778
solinkcloud.com	86,356
certsbridge.com	84,460
ondigitalocean.com	82,923
ludevices.com	82,345
ccaiplatform.com	79,892
noondaycollection.com	77,715
sureserver.com	73,345
att.com	69,658
webex.com	63,739
smattermost.com	60,171
register.com	58,823
amazon.com	56,493
blockchainnodeengine.com	56,415
doodlekit.com	54,503
bringimpact2022.com	54,174
vendia.com	53,374
optum.com	50,634
lambdaspaces.com	50,078
flowers-to-the-world.com	45,504
amazonlightsail.com	45,368
maximo.com	45,135
exprealty.com	44,470

Forward-DNS crawler hasn't resolved enough .com apexes to BGP-attributable IPs.

Technology	Hosts
Plesk	1
Nginx	1

Feed	Category	Domains
openphish	phishing	3,817

ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.