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Features
The AI
Providers
Agencies
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Diagnostic
5
Full report
Domain expiry
SSL certificate
Email authentication
Blacklists
Records
4
Mail servers (MX)
Name servers (NS)
TXT records
CNAME aliases
Network and email
4
DNS propagation
SPF generator
Domain reputation
Security headers
Certificates and names
3
CSR decoder
Certificate decoder
Punycode / IDN
The website
5
Bulk expiry
Domain age
Redirect chain
Site technologies
Robots.txt tester
Guides
15
SPF, DKIM and DMARC
Monitoring client domains
The 7 pre‑launch checks
The SPF record
DKIM
DMARC
DNSSEC
The CAA record
Time to live (TTL)
A and AAAA records
The CNAME record
MX records
WHOIS and RDAP
The certificate chain
HSTS
Common breakages
8
A domain has expired
Certificate expired over the weekend
“Not secure” in Chrome
Client emails land in spam
DNS changed, nothing moves
A client lost their domain
Domain in the former agency's name
Taking over a client's site
Glossary
20
Registrar
Registry
WHOIS
RDAP
Transfer lock
Name server
DNS zone
A record
CNAME record
TXT record
TTL (time to live)
DNS propagation
MX record
SPF
DKIM
DMARC
DNSSEC
TLS certificate
Certificate authority
Blacklist
Comparisons
7
DomainVigil or UptimeRobot?
DomainVigil or MxToolbox?
DomainVigil or Site24x7?
DomainVigil or Domains Defender?
The best domain monitoring tools
Monitoring fifty domains
The free alternatives
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