~/d/costco.com
// costco.com
Live audit across 8 checks. Cached 24h · generated less than a minute ago.
domain_grade
A
strong
85
/ 100 · across 8 checks
// points lost on:
security headers −12
dnssec −3
SSL Certificate
[ OK ]
Valid for 138 more days.
Issued by DigiCert Global G3 TLS ECC SHA384 2020 CA1 · 138 days left · TLSv1.3
DMARC Policy
[ OK ]
Strict DMARC policy enforced. Spoofed mail is rejected.
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
SPF Record
[ OK ]
Strict SPF (-all). Unauthorized senders are rejected.
1 lookups · all=-all
MX Records
[ OK ]
MX configured (2 record(s)).
10 mx0b-001f9d01.pphosted.com · 10 mx0a-001f9d01.pphosted.com
Name Servers
[ OK ]
6 authoritative nameservers
a1-116.akam.net · a14-67.akam.net · a28-66.akam.net
WHOIS
[ OK ]
Valid for 331 more days.
Registrar: CSC Corporate Domains, Inc. · expires 2027-03-18
[ embed_grade_badge ]
Domain grade: A — strong
markdown (github readme)
[](https://dombrains.com/d/costco.com)
html (any webpage)
<a href="https://dombrains.com/d/costco.com"><img src="https://dombrains.com/badge/costco.com/grade.svg" alt="DomBrains grade: A"></a>
// re-queries our scoring engine · cached 1h at the edge · backlinks to this profile page
[ per_check_badges ]
<img src="https://dombrains.com/badge/costco.com/ssl">
<img src="https://dombrains.com/badge/costco.com/dmarc">
<img src="https://dombrains.com/badge/costco.com/spf">
<img src="https://dombrains.com/badge/costco.com/mx">
<img src="https://dombrains.com/badge/costco.com/dnssec">
<img src="https://dombrains.com/badge/costco.com/security_headers">