Top-Level Domain

.gov

Aggregated statistics for the top-level domain

Apex domains

9,810

we've enumerated

Subdomains seen

265,894

CT + DNS + brute

TLS certs

—

naming .gov

Hosting ASNs

—

distinct origins

Domain Distribution

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

Apex	Subdomains
ca.gov	7,889
nasa.gov	7,485
nih.gov	7,299
dc.gov	6,652
in.gov	6,574
sandia.gov	5,383
va.gov	5,335
maryland.gov	5,234
sc.gov	4,765
epa.gov	4,740
faa.gov	4,202
nd.gov	4,096
ohio.gov	3,886
virginia.gov	3,785
dot.gov	3,186
pa.gov	3,180
ornl.gov	3,014
mn.gov	2,932
ct.gov	2,871
noaa.gov	2,767
dhs.gov	2,740
treasury.gov	2,686
wi.gov	2,661
uscourts.gov	2,458
cms.gov	2,452
cdc.gov	2,439
hhs.gov	2,382
nc.gov	2,339
senate.gov	2,257
lacounty.gov	2,254
usda.gov	2,235
doe.gov	2,192
wa.gov	2,000
tn.gov	1,863
fnal.gov	1,861
nh.gov	1,851
mountainview.gov	1,697
texas.gov	1,636
nj.gov	1,574
utah.gov	1,466
lbl.gov	1,420
ny.gov	1,294
nyc.gov	1,236
ky.gov	1,164
anl.gov	1,091
ed.gov	1,038
mo.gov	954
dol.gov	931
ok.gov	906
opm.gov	884

Top Certificate Issuers

No TLS certs seen

scan_tls_certs doesn't yet contain a certificate whose SAN ends in .gov.

Top Hosting ASNs

No hosting attribution yet

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

Tech-Stack Distribution

No Wappalyzer detections

Body-fetcher hasn't covered enough .gov sites yet for stack patterns to emerge.

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