RE

Reddit.com Domain Trust Report

ACTIVE Reddit — social news aggregation and discussion platform
PRISM VERDICT

reddit.com scores well overall but has attention areas in Security Headers and Email Auth. All other dimensions are healthy.

Last scanned 11m ago · Sep 21, 2026
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OVERALL TRUST SCORE
82 GRADE B
SSL A+
DNS Healthy
EMAIL Strong
SSL GRADE
A+
Expires in 148d
DNS HEALTH
100%
4 nameservers
EMAIL AUTH
2/3
SPF · DKIM · DMARC
HEADERS
F
Score: 15/100
DOMAIN EXPIRY
586d
Apr 29, 2028
Critical issues detected — one or more dimensions require immediate attention.

Registration & ownership

WHOIS
Registrar MarkMonitor Inc.
Registered Apr 29, 2005
Updated Mar 28, 2026
Expires Apr 29, 2028 586d
Status client delete prohibit.server delete prohibit.
reddit.com is registered with MarkMonitor Inc., since Apr 29, 2005. Domain registration expires Apr 29, 2028 (586 days). Status: client delete prohibited.

DNS records

DNS
A 151.101.193.140151.101.1.140151.101.129.140151.101.65.140
AAAA 2a04:4e42:200::3962a04:4e42:600::3962a04:4e42::3962a04:4e42:400::396
MX aspmx.l.google.com (pri 1)aspmx2.googlemail.com (pri 10)aspmx3.googlemail.com (pri 10)alt1.aspmx.l.google.com (pri 5)alt2.aspmx.l.google.com (pri 5)
NS ns-1029.awsdns-00.orgns-1887.awsdns-43.co.ukns-378.awsdns-47.comns-557.awsdns-05.net
TXT 00DV90000052YKT=1TBV90000000AsD00Dbf000005OCRl=1TBbf0000000MJt00Dbf000005OCTN=1TBbf0000000Mer00Do0000000I6Pa=1TBcv0000000HQh614ac4be-8664-4cea-8e29-f84d08ad875c +24 more
CAA digicert.com; cansignhttpexchanges=yespki.goog
reddit.com resolves to 151.101.193.140 and 3 more IPs. Nameservers: ns-1029.awsdns-00.org, ns-1887.awsdns-43.co.uk (+2). IPv6 (AAAA) is configured. Mail handled by 5 MX records.

Hosting & network

NETWORK
IP address 151.101.193.140151.101.1.140151.101.129.140151.101.65.140
IPv6 2a04:4e42:200::3962a04:4e42:600::396 +2
Nameservers ns-1029.awsdns-00.orgns-1887.awsdns-43.co.ukns-378.awsdns-47.comns-557.awsdns-05.net
Protocol HTTPS HTTP/2
IPv6 support ENABLED
reddit.com is hosted at 151.101.193.140 across 4 IPs. Full IPv6 support is configured. DNS is managed through 4 nameservers (ns-1029.awsdns-00.org).

SSL / TLS

SECURITY
Valid · A+ DigiCert Inc · expires Feb 17, 2027
148 days remaining
TLS 1.3 TLS 1.2 TLS 1.1 TLS 1.0

Technology detected

STACK
FastlyReactHTTP/2HSTS

30-day availability

MONITORING
99.90% no incidents
30d ago today

Email authentication

EMAIL

Monitoring events

5 total EVENTS
DMARC `sp=` not set while `p=reject` — subdomains still spoofable 4d ago
medium email SUBDOMAIN_POLICY_GAP
sp
DKIM selectors discovered 12d ago
info email DKIM_SELECTORS_FOUND
found
Security header grade degraded: C → F 12d ago
low hdr HEADER_GRADE_DEGRADED
grade
DOMAIN LIFECYCLE
Registered Apr 29, 2005 21 years old
Last updated Mar 28, 2026
Expires Apr 29, 2028 586 days remaining
Registrar MarkMonitor Inc.
SSL issued by DigiCert Inc
DOMAIN INTELLIGENCE

What we know about Reddit.com

Reddit.com has been registered for 21 years (since Apr 29, 2005), managed through MarkMonitor Inc., ranked #104 globally by Tranco, categorised as social media. Its current health score is 82/100 (grade B), reflecting strong SSL, DNS, and email authentication posture. As a social platform with broad API exposure, its DNS configuration and security headers directly affect third-party integrations and authentication flows.

Security Posture Grade B

reddit.com's security posture: SSL is valid (issued by DigiCert Inc), expiring in 148 days; security headers are largely missing.

SSL A+
Headers F
SSL expiry 148d
Health score 82/100
Email Authentication Strong

SPF is configured, restricting which servers can send email as this domain. DMARC policy is set to "reject" — spoofed emails are rejected.

SPF Configured
DMARC policy reject
Spoofable No
Network Infrastructure IPv6

reddit.com resolves to 4 IP addresses (151.101.193.140 and 3 more), IPv6 is enabled, DNS is managed through ns-1029.awsdns-00.org and ns-1887.awsdns-43.co.uk (+2 more), email routed through 5 MX records.

Primary IP 151.101.193.140
Nameservers 4
MX records 5
A records 4
DomainScan monitors reddit.com continuously — DNS every hour, SSL & email auth every 6 h, security headers every 12 h, WHOIS every 24 h. Every detected change triggers a severity-classified monitoring event. Refreshed 11m ago
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