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Zoom.us Domain Trust Report

ACTIVE Zoom — video conferencing platform with 300M+ daily users
PRISM VERDICT

zoom.us 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
84 GRADE B
SSL A+
DNS Healthy
EMAIL Strong
SSL GRADE
A+
Expires in 99d
DNS HEALTH
100%
4 nameservers
EMAIL AUTH
2/3
SPF · DKIM · DMARC
HEADERS
F
Score: 15/100
DOMAIN EXPIRY
215d
Apr 24, 2027
Critical issues detected — one or more dimensions require immediate attention.

Registration & ownership

WHOIS
Registrar MarkMonitor, Inc.
Registrant Domain Administrator
Registered Apr 24, 2002
Updated Apr 18, 2026
Expires Apr 24, 2027 215d
Status clientTransferProhibited https://icann.org/epp#clientTransferProhibitedclientDeleteProhibited https://icann.org/epp#clientDeleteProhibitedclientUpdateProhibited https://icann.org/epp#clientUpdateProhibitedserverUpdateProhibited https://icann.org/epp#serverUpdateProhibited +2
zoom.us is registered with MarkMonitor, Inc., since Apr 24, 2002. Domain registration expires Apr 24, 2027 (215 days). Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited.

DNS records

DNS
A 170.114.52.2
AAAA 2407:30c0:182::aa72:3402
MX mxa-00569201.gslb.pphosted.com (pri 10)mxb-00569201.gslb.pphosted.com (pri 10)
NS ns-1137.awsdns-14.orgns-1772.awsdns-29.co.ukns-387.awsdns-48.comns-888.awsdns-47.net
TXT HaFoSdUeCSdJo9U8lG@NWZ6vnoRltUteEAl&yuY$$eE25sKJguFH58Lss%9@e73OK#XigH^i3mCDjax&…SFMC-FEDGKE8lGkIFM2TngfZtUoES_Ep-nR1DSOvRZFxzadobe-idp-site-verification=7116ab50a89b2c2402382aea3362209410eac90f2a590f358ce1…anthropic-domain-verification-8fadf7=uwajz3dDn6eAq3Yl6LtArZNBAapple-domain-verification=CbBNkhNvbPFzgvvv +40 more
CAA amazon.comdigicert.comgodaddy.comletsencrypt.orgpki.googsectigo.com
zoom.us resolves to 170.114.52.2. Nameservers: ns-1137.awsdns-14.org, ns-1772.awsdns-29.co.uk (+2). IPv6 (AAAA) is configured. Mail handled by 2 MX records.

Hosting & network

NETWORK
IP address 170.114.52.2
IPv6 2407:30c0:182::aa72:3402
Nameservers ns-1137.awsdns-14.orgns-1772.awsdns-29.co.ukns-387.awsdns-48.comns-888.awsdns-47.net
Protocol HTTPS HTTP/2
IPv6 support ENABLED
zoom.us is hosted at 170.114.52.2. Full IPv6 support is configured. DNS is managed through 4 nameservers (ns-1137.awsdns-14.org).

SSL / TLS

SECURITY
Valid · A+ DigiCert Inc · expires Dec 30, 2026
99 days remaining
TLS 1.3 TLS 1.2 TLS 1.1 TLS 1.0

Technology detected

STACK
HTTP/2TLS 1.3HSTSIPv6

30-day availability

MONITORING
99.90% no incidents
30d ago today

Email authentication

EMAIL

Monitoring events

10 total EVENTS
Registrant email changed 9h ago
high exp WHOIS_REGISTRANT_EMAIL_CHANGED
details.contacts.registrant.email
Registrant email changed 9h ago
high exp WHOIS_REGISTRANT_EMAIL_CHANGED
details.contacts.registrant.email
DMARC `sp=` not set while `p=reject` — subdomains still spoofable 4d ago
medium email SUBDOMAIN_POLICY_GAP
sp
DOMAIN LIFECYCLE
Registered Apr 24, 2002 24 years old
Last updated Apr 18, 2026
Expires Apr 24, 2027 215 days remaining
Registrar MarkMonitor, Inc.
Registrant Domain Administrator
SSL issued by DigiCert Inc
DOMAIN INTELLIGENCE

What we know about Zoom.us

Zoom.us has been registered for 24 years (since Apr 24, 2002), managed through MarkMonitor, Inc., ranked #84 globally by Tranco, categorised as communications. Its current health score is 84/100 (grade B), reflecting strong SSL, DNS, and email authentication posture. As a communications platform, its email authentication configuration (SPF, DKIM, DMARC) and DNS reliability directly affect message deliverability and spoofing resistance.

Security Posture Grade B

zoom.us's security posture: SSL is valid (issued by DigiCert Inc), expiring in 99 days; security headers are largely missing; no blacklist entries found.

SSL A+
Headers F
SSL expiry 99d
Health score 84/100
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

zoom.us resolves to 170.114.52.2, IPv6 is enabled, DNS is managed through ns-1137.awsdns-14.org and ns-1772.awsdns-29.co.uk (+2 more), email routed through 2 MX records.

Primary IP 170.114.52.2
Nameservers 4
MX records 2
A records 1
DomainScan monitors zoom.us 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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