>
Off
ensly
Free DNS check
Penetration testing
Pricing
Blog
Account
Log in
Get started
~/
blog
Email security
Web security
DNS security
Free DNS check
Penetration testing
Pricing
Blog
Account
Log in
Get started
Tag
TLS
Articles about TLS.
1 article
.
dev
net
org
northwind
umbrella
stark
_25._tcp.mx
TLSA
@
DS
sel1._domainkey
TXT
.
dev
net
acme
contoso
globex
@
CAA
_25._tcp.mx
TLSA
sel1._domainkey
TXT
DNS security
October 21, 2026
CAA records: decide who may issue certificates for your domain
Without a CAA record, any public certificate authority may issue a certificate for your domain. One DNS record narrows that to the ones you actually use.
2 min read
Read