Top-Level Domain

.com

Aggregated statistics for the top-level domain

Apex domains

83,552,285

we've enumerated

Subdomains seen

326,888,193

CT + DNS + brute

TLS certs

1,673,415

naming .com

Hosting ASNs

—

distinct origins

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

Apex	Subdomains
amazonaws.com	79,331,625
azure.com	9,487,995
kafka.us-east-1.amazonaws.com	4,073,815
cisco.com	3,036,617
ondemand.com	1,839,539
kafka-beta.us-east-1.amazonaws.com	1,644,973
microsoft-int.com	1,386,076
cloudflaressl.com	1,025,913
hubspot-at-test.com	783,520
mmscloudtest.com	745,791
zendesk.com	645,360
arconazure.com	403,376
myftpupload.com	393,991
cloudflarestorage.com	365,484
dynamics.com	335,865
splunkcloud.com	322,465
ava.us-east-1.amazonaws.com	303,178
waconazure.com	291,957
mscds.com	225,294
herokuspace.com	186,769
ups.com	161,530
herokusnitest.com	160,715
caddy-one-ibe-redirect-proxy.eu-central-1.elasticbeanstalk.com	159,206
amazongamelift.com	149,477
microsoft.com	136,693
asuscomm.com	106,967
solinkcloud.com	100,275
a2z.com	99,019
certsbridge.com	98,237
loxonecloud.com	97,481
ondigitalocean.com	87,625
ludevices.com	86,631
ccaiplatform.com	84,696
noondaycollection.com	82,158
sureserver.com	76,394
att.com	73,646
webex.com	65,862
register.com	61,785
smattermost.com	61,198
doodlekit.com	59,899
blockchainnodeengine.com	59,601
bringimpact2022.com	58,166
amazon.com	57,592
vendia.com	53,531
lambdaspaces.com	52,345
app-deutschebank.com	52,284
optum.com	52,222
haplorrhini.com	47,639
maximo.com	47,511
misitiohostgator.com	47,318

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

Technology	Hosts
Plesk	1
Nginx	1

Feed	Category	Domains
openphish	phishing	3,922

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