Skip to content
https://zoom.us

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
97
GRADE
A+
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Sao Paulo, Brazil
301 Moved Permanently
Checks
9
7 PASS 2 REVIEW
B
TLS Certificate Expiry & Recommendations
257 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

257
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
B
CDN & Delivery
Cloudflare
REVIEW
Cloudflare
Info::
Site is served via Cloudflare CDN (edge: GRU)
Got: cf-ray: 9ed4bdb4bd3a4b28-GRU
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9ed4bdb4bd3a4b28-GRU
A+
DNS Records
1 A records, 51 ms lookup
PASS
1 A records, 51 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 170.114.52.2
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2407:30c0:182::aa72:3402
Info::
4 nameserver(s) configured
Got: ns-1137.awsdns-14.org, ns-1772.awsdns-29.co.uk, ns-387.awsdns-48.com, ns-888.awsdns-47.net
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 51 ms
Got: 51 ms
A170.114.52.2
AAAA2407:30c0:182::aa72:3402
CNAME—
NSns-1137.awsdns-14.org, ns-1772.awsdns-29.co.uk, ns-387.awsdns-48.com, ns-888.awsdns-47.net
MX
10 mxa-00569201.gslb.pphosted.com
10 mxb-00569201.gslb.pphosted.com
TXT
HaFoSdUeCSdJo9U8lG@NWZ6vnoRltUteEAl&yuY$$eE25sKJguFH58Lss%9@e73OK#XigH^i3mCDjax&...
SFMC-FEDGKE8lGkIFM2TngfZtUoES_Ep-nR1DSOvRZFxz
adobe-idp-site-verification=7116ab50a89b2c2402382aea3362209410eac90f2a590f358ce1...
anthropic-domain-verification-8fadf7=uwajz3dDn6eAq3Yl6LtArZNBA
apple-domain-verification=CbBNkhNvbPFzgvvv
atlassian-domain-verification=4y6yoGrdYbj4zq5bMXvpGI1KFVEzSVuWMYG4/Gv4BuFjIthTVB...
atlassian-domain-verification=o4YG+mXlOE6uTJb7uGimcl9DJZnVg4aimBCf/4UrplRJvMk84J...
autodesk-domain-verification=oPP5RpbpIX2AL7W7H2p2
canva-site-verification=Fxuo9x2-ohLElGZ9w9XYHw
csb6c7cn6kf21c5xvwmhnn347fczbr9x
cui69v35i9t5lj9360gajgt1tc
docker-verification=e55e0281-9c6f-4cba-8788-e50c50899b3f
docusign=256ed1dc-9832-46f5-b724-82a1e17e5796
docusign=b21dec83-4d62-479c-b2aa-43a0cd4c125a
dropbox-domain-verification=3s15m13l23wp
facebook-domain-verification=r9u6lu6z5wy3yokf7yd52l6k08xqsx
google-site-verification=2JXQP1qfUwhK_5Wkn1gmXAFa2RD8raNeqWBD2_MtQqs
google-site-verification=G6mELnMFHZrRpJ_rAqHPDP2voFX3_g-lN78U-eJ7xJY
google-site-verification=JvBsPulrJw4xeN9DV9oeGqFDDUlAsJv-vLu1PriMw1g
google-site-verification=RA1o2A5KlW67SrvzJ4JovDWlkMzOtxJnS6Lq4MWso1Q
google-site-verification=gqo5WilnbGIuUTc-MdPuJkHvsEyOVOyUnbnK2uAgfrI
google-site-verification=kzxH5gxEvbMw9EUX-uQNCNxzoHNk7eksOJdaOLt-WYA
google-site-verification=lriJaWXsakkfjHphDVRWuah716cT40SEYJrWSn9ka5E
google-site-verification=r5_uj4r2YuGNrhng2dLo4xfDAvaYGhNuqv6icJiQdxA
google-site-verification=yofTND47qXdSBHRBZSkPUrP0QQ-WF76h-K-F05IHmj0
h1-domain-verification=5yw85Ewx1obuckMSkZQokfDYewnzdBw9JqKmZWMXqFs2F3cq
knowbe4-site-verification=c3a762336824e50b8902fc5d47a79dd9
ljtjrbvpt98v132shnhkm0thlt
mongodb-site-verification=LuLsVGWKjIwOk54WdscqbRmXgqU2kGIc
nintex.5e7289cea709bf0d10e77561
oo414pse7fk8ntk80qoms9poc1
paloaltonetworks-site-verification=ab6a946a97f44c0b83b5cc59ba90e5f0c768666814ce8...
pardot_84442_*=f0bf83bf261ad77163f6e86fc94ae06036d153cc65df5531309b396933da9591
slack-domain-verification=DPFh88HZR7KVwJkwlh98Y0PgSABl6BKgY1hVlwhC
smartsheet-site-validation=DYfGXuyJc7oq-_D05ZZyl6QGXpRWSWpR
spycloud-domain-verification=889b71d1-9e56-48da-a7cc-f3bc6497ca2f
status-page-domain-verification=pc76p1k8712r
stripe-verification=0628546b6023b9d18ecddf4eec9658f8513bb619d4ae413b1143f81b31ee...
stripe-verification=29700ec8c3d8a93a634139f4dfe8a23a87f6b97829d3e6ea123d07f7e585...
stripe-verification=56bc5cf2da44b2033da49b45ed3789209db29432268975666693a750ecfd...
stripe-verification=64a9e3b2f28cc3bb2182307c5c2ea98aa78bfe6a36ed5f22bd3d0bc9667a...
stripe-verification=68b6edce67880909a44aad0af814c3afe0bf8e053e70f81c70264bf9156c...
stripe-verification=933cf52c0e93778a0f3fbdc96954c1f6bd9813b6356cdc71667df03b4433...
stripe-verification=c9c277e76c265ef8b27ee1fb8b7f6e6240daacf25d36f96d586c05301b03...
stripe-verification=f613690c5cef6193bdc4638549691d7c4b80994cd6b47c182d9ce9afa560...
teamviewer-sso-verification=4f42e066d37d4305b4091646efd91add
v=DMARC1; p=reject; ri=3600; rua=mailto:sesbounce@zoom.us,mailto:dmarc_rua@email...
SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:_spf.google.com incl...
v=zoomadn us.zoom.idp.commercial=zoom.okta.com
vmware-cloud-verification-4d68d199-43dd-455f-ad71-18141d5d09c8
windsurf-verification=FvOEjs9_z0dKIDvwoWHuErOht9xT0g3-4F51gME67xQ=
CAALookup not available with standard resolver
Resolved in 51 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
Redirect Chain
1 redirect(s), 169 ms total
PASS
1 redirect(s), 169 ms total
Info::
Single redirect
Got: https://zoom.us → https://www.zoom.com (301)
Info::
WWW normalization redirect
Info::
Cross-domain redirect detected

https://zoom.us

19 ms · HTTP/1.1

301

https://www.zoom.com

150 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://zoom.us30119 msHTTP/1.1cloudflare
2https://www.zoom.com200150 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2407:30c0:182::aa72:3402
Got: 1 ms connect
IPv6 Ready
AAAA Records 2407:30c0:182::aa72:3402 Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 5454 URLs
PASS
robots.txt present, sitemap with 5454 URLs
Info::
robots.txt is present
Got: 2005 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 5454 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2005 B Sitemaps referenced 1 User-agents *, LinkedInBot, facebookexternalhit, WhatsApp, redditbot, TikTokBot, Snapchat, Googlebot, Twitterbot, PinterestBot, InstagramBot, Slackbot, Tumblr Blocking No — crawling allowed
User-Agent: *
Disallow: /download/*/Zoom_launcher.exe
Disallow: /download/*/zoomusLauncher.zip
Disallow: /docs/image/new/brand/outdated/
Disallow: /docs/doc/2-Page-All-Products.pdf
Disallow: /docs/doc/zoom-apps-security-privacy-faq.pdf
Disallow: /docs/doc/zoom-apps-data-management.pdf
Disallow: /wc/*
Disallow: /web/*
Disallow: /share*
Disallow: /support*
Disallow: /j/*
Disallow: /z/*
Disallow: /s/*
Disallow: /u/*
Disallow: /w/*
Disallow: /e/*
Disallow: /account*
Disallow: /start*
Disallow: /postattendee*
Disallow: /rec/*
Disallow: /register*
Disallow: /webinar/register/*
Disallow: /webinar/registerevent/*
Disallow: /meeting/register/*
Disallow: /*oauth_signin
Disallow: /my/*
Disallow: /download2*
Disallow: /*?

User-agent: Googlebot
Allow: /join

User-agent: LinkedInBot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: facebookexternalhit
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: Twitterbot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: PinterestBot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: InstagramBot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: Slackbot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: WhatsApp
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: redditbot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: Tumblr
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: TikTokBot
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

User-agent: Snapchat
Allow: /webinar/register/*
Allow: /webinar/registerevent/*
Allow: /meeting/register/*

Sitemap: https://zoom.us/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 5454 entries Valid XML Yes
Sample URLs:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.zoom.us/
200https://zoom.us/

Preferred variant: non-www

HTTP → HTTPS

301http://zoom.us/ → https://www.zoom.com

Consistent

A+
Domain Intelligence
zoom.us — via MarkMonitor, Inc., 24 years, 3 months old
PASS
zoom.us — via MarkMonitor, Inc., 24 years, 3 months old
Info::
Domain registered until Apr 23, 2027 (1 years remaining)
Info::
Registrar: MarkMonitor, Inc.
Info::
Registrar lock is enabled
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Domain expiry

285 days

April 23, 2027

SSL certificate

257 days

Issued by DigiCert Inc

Domain age

24 years, 3 months

Registered April 24, 2002

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2407:30c0:182::aa72:3402

Registrar

MarkMonitor, Inc.

Locked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar MarkMonitor, Inc.
Created April 24, 2002 (24 years, 3 months ago)
Expires April 23, 2027 (1 years)
Last Updated April 17, 2025
Name Servers ns-387.awsdns-48.com, ns-1137.awsdns-14.org, ns-888.awsdns-47.net, ns-1772.awsdns-29.co.uk
Registrant Zoom Video Communications, Inc.
Hosting
IP Address 2407:30c0:182::aa72:3402
Data source: whois (1.6s)

Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.

Why this matters

Registrar lock (clientTransferProhibited et al.) prevents unauthorized domain transfers — strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 17 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
2 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
2 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
6 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
18 ms
Total Time Total request time from DNS lookup through full response.
18 ms

Connection waterfall

DNS Lookup 2 ms TCP Connect 2 ms TLS Handshake 6 ms Server Processing 8 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback