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https://zoominfo.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
7 PASS 2 REVIEW
B
TLS Certificate Expiry & Recommendations
63 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

63
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: CDG)
Got: cf-ray: 9f074f30dc23014f-CDG
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9f074f30dc23014f-CDG
A+
DNS Records
2 A records, 90 ms lookup
PASS
2 A records, 90 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.16.117.43, 104.16.118.43
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6810:762b, 2606:4700::6810:752b
Info::
2 nameserver(s) configured
Got: rita.ns.cloudflare.com, tim.ns.cloudflare.com
Info::
4 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: 90 ms
Got: 90 ms
A104.16.117.43, 104.16.118.43
AAAA2606:4700::6810:762b, 2606:4700::6810:752b
CNAME—
NSrita.ns.cloudflare.com, tim.ns.cloudflare.com
MX
10 mxb-0042bc01.gslb.pphosted.com
10 mxa-0042bc01.gslb.pphosted.com
50 us-smtp-inbound-1.mimecast.com
60 us-smtp-inbound-2.mimecast.com
TXT
asv=1d6c4fb60f2790b5d26fed0bb12bd115
hubspot-developer-verification=MWI1YTkyNDctODZmNi00MTBhLWE5MTYtNDBhMWEzZTQ2ODg3
asv=2d91cb2d6544d7a3891d743d45d5cc45
google-site-verification=gg10WGEg16Cp7M5hcqsTRxE0K_f34PWizql6mjRUOPg
_n4k3s4c3lnx9uq8loq8e4qrgizqenc4
pendo-domain-verification=155ca67e-9833-4698-b886-9215b2431dea
MS=ms65324670
google-site-verification=Ck8kCbNGwHAEOnj9O7xMBPG0WBXl1bTju9N2mvtpYWo
google-site-verification=o9iKGrOMdBp_NYSpUvDUa4okJHX8lafcD0rCjFoyBTU
_elastic_domain_challenge=6e1e719d7eb9dfeb13b9f6e7f64414e005d1a4da36c43074b06c0c...
atlassian-domain-verification=nLP991XRIVfjHgLMjm0qm2oeZMikTd77NgfuPXxrIBqkkkTZgr...
google-site-verification=-ukM4y3JvL3Toa2D44DXo_b5u7wwUhaaVYfFzPHzP5I
google-site-verification=6mXTBuDHk-2Du-x2_EucW6isU05nrWXQne3jF5QsGU8
_qkt0vyeudqdmyimlu1sicmvr5yhojvo
jamf-site-verification=6RDl4wTo2zo5foO4qIdvUQ
33904d6d-5e21-4a18-8e46-b170ae80b68e
docusign=4e925286-966b-4869-81ec-23fbbe116a16
ecostruxure-it-verification=63b73ded-c9a0-43d5-a4bc-13bc4b86cdac
7s5ys3r5gsrzsm1lxdhgmp6903dfypp0
SPF v=spf1 include:_u.zoominfo.com._spf.smart.ondmarc.com -all
facebook-domain-verification=8xqew8kv8q2qml8urdur3wijr5ginf
brevo-code:3fc323c894e26fcbb4611b5486a7dba7
hubspot-developer-verification=NDNjNmJlZDYtNGVhOS00MGQxLWFlYjMtODkxZDY2NDc2NmY0
wiz-domain-verification=8df7ec58ab5c882d7d7bad1df1200d77f97a5c7f898ea1ef0904511e...
airtable-verification=7d5c4bb1083aed6e27cd99985c49ac81
0ed1fe018a83a1a25394024dadbc718d52c026f8eb
zapier-domain-verification-challenge=db195766-a847-4db2-b88a-459d5695aa90
MS=ms33572304
hUHXNRkPrDG/vT7H4SJCG2xTF9fMTKMhfuP72fEgCsrux2DijrADGxZIfaNs6lR/5qzfiHU+CyR6mSxG...
verification=b384fc086e99452bad93e15dfbe59451
google-site-verification=460JvyZeIw91-DWG0ZEsnAGMxMiSPVug2qJcXevHCDE
google-site-verification=Ykk1G2OZGjvrWYGXMqhUO9ADxZAa2u7wl2jM7-VRI8I
postman-domain-verification=8eea31cc5b7cfbfff163d605845f51d65296766bb351bc622935...
yahoo-verification-key=1mwvI3bkKwq2edAI3E6IBXFKZaucTzMI9n4ynwwKxC4=
MS=ms38951267
google-site-verification=lBWYr74utT4FeN7oUCykhwiW1woGDhS7S0A4M7isQhA
cisco-ci-domain-verification=75cb9074f645f91ce729c4564e1e073eaa626bf0466be6b5e80...
smartsheet-site-validation=oCkvv_UFOL0zilzID65xfuiYGFuME7lx
box-domain-verification=03a9187e13251fb31e146271331be39f6465c7691b6c597729582302...
segment-site-verification=90RRtjxCS6RhpBwQXWa4KZwBygYQCOBT
google-site-verification:m4g1eOID25e-EuZCXCXyalWrcskGHtkDMI3A4-0qjC0
google-site-verification=gA2P07VwyAI8D1HzwOO0Q7gVOnctkRTliJ8FxgWyjK8
CAALookup not available with standard resolver
Resolved in 90 ms

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), 340 ms total
PASS
1 redirect(s), 340 ms total
Info::
Single redirect
Got: https://zoominfo.com → https://www.zoominfo.com/ (301)
Info::
WWW normalization redirect

https://zoominfo.com

59 ms · HTTP/1.1

301

https://www.zoominfo.com/

281 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://zoominfo.com30159 msHTTP/1.1cloudflare
2https://www.zoominfo.com/200281 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6810:762b, 2606:4700::6810:752b
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700::6810:762b, 2606:4700::6810:752b Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 22 URLs
PASS
robots.txt present, sitemap with 22 URLs
Info::
robots.txt is present
Got: 3741 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 22 entries
Info::
Sitemap index with 22 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3741 B Sitemaps referenced 1 User-agents GPTBot, Yandex, FreshpingBot, Pingdombot, AI2Bot, Apple-Extended, dotbot, Baiduspider-image, ZoominfoBot, OAI-SearchBot, moget, sethbot, Kangaroo Bot, Amazonbot, LinkedInBot, FacebookBot, ichiro, ZoomBot, Baiduspider-video, MJ12bot, DJEcoBot, heritrix, ClaudeBot, Diffbot, PanguBot, YouBot, Baiduspider, UptimeRobot, Mail.RU_Bot, *, Bingbot, Google-Extended, Timpibot, NaverBot, YoudaoBot, coccocbot-image, Meta-ExternalAgent, ChatGPT-User, Applebot, DuckAssistBot, Operator, Webzio-Extended, Yeti, sogou spider, PetalBot, PerplexityBot, coccocbot-web, DataForSeoBot, CCBot, cohere-training-data-crawler, Omgili, Meta-ExternalFetcher, rogerbot, AwarioSmartBot, AwarioRssBot, Bytespider, NextGenSearchBot Blocking No — crawling allowed
# /robots.txt file for /www.zoominfo.com

# /business sitemap
Sitemap: https://www.zoominfo.com/cws/general-sitemap.xml

# General Disallow Rules
User-agent: *
Disallow: /access
Disallow: /blog/api
Disallow: /verifyRegister
Disallow: /verifyRegisterConfirm
Disallow: /clearRegister
Disallow: /resendVerification
Disallow: /accountWelcome
Disallow: /account
Disallow: /myAccount
Disallow: /needVerify
Disallow: /myaccount
Disallow: /profile
Disallow: /profileReferences
Disallow: /claim
Disallow: /update/edit-person-profile
Disallow: /update/create-person-profile
Disallow: /update/remove-person-profile
Disallow: /update/edit-company-profile
Disallow: /update/create-company-profile
Disallow: /update/remove/verification-failure
Disallow: /update/request-access
Disallow: /update/company
Disallow: /blank
Disallow: /ie6
Disallow: /siteStatus
Disallow: /appExpired
Disallow: /appSuspended
Disallow: /notAuthorized
Disallow: /logout
Disallow: /resetPassword
Disallow: /changePassword
Disallow: /securityCode
Disallow: /common
Disallow: /CachedPageLoading
Disallow: /embeddedcontent
Disallow: /business/administrator
Disallow: /usercenter
Disallow: /blog/tag/
Disallow: /CachedPageHeader
Disallow: /search/company
Disallow: /s/css
Disallow: /s/common/css
Disallow: /anura
Disallow: /api
Disallow: /people_directory
Disallow: /directories-api
Disallow: /newsroom/press-releases/press-releases-*
Disallow: /newsroom/press-releases/*/feed
Disallow: /about/m/newsletters/*
Disallow: /c/company-name
Disallow: /pic/company-name
Disallow: /directories/transition
Disallow: /pixel
Disallow: /workers/data-layer.worker
Disallow: /about/search-cs
Allow: /c/undefined

# Bing Disallow Rules
User-agent: Bingbot
Disallow: /about/*query=*

# AI Bots Group - unified disallow rules
User-agent: AI2Bot
User-agent: Apple-Extended
User-agent: Bytespider
User-agent: CCBot
User-agent: ClaudeBot
User-agent: cohere-training-data-crawler
User-agent: Diffbot
User-agent: FacebookBot
User-agent: Google-Extended
User-agent: GPTBot
User-agent: Kangaroo Bot
User-agent: Meta-ExternalAgent
User-agent: Omgili
User-agent: PanguBot
User-agent: Timpibot
User-agent: Webzio-Extended
User-agent: ChatGPT-User
User-agent: DuckAssistBot
User-agent: Meta-ExternalFetcher
User-agent: Operator
User-agent: Applebot
User-agent: OAI-SearchBot
User-agent: PerplexityBot
User-agent: YouBot
Disallow: /p
Disallow: /c
Disallow: /pic
Disallow: /s/search
Disallow: /people-search
Disallow: /companies-search
Disallow: /people
Disallow: /people_directory
Disallow: /tech
Disallow: /sales-leads
Disallow: /lead-generation-tools
Disallow: /zoominfo-chrome-ext

# Full block bots
User-agent: Yandex
User-agent: dotbot
User-agent: rogerbot
User-agent: moget
User-agent: ichiro
User-agent: NaverBot
User-agent: Yeti
User-agent: Baiduspider
User-agent: Baiduspider-video
User-agent: Baiduspider-image
User-agent: sogou spider
User-agent: YoudaoBot
User-agent: MJ12bot
User-agent: DJEcoBot
User-agent: Amazonbot
User-agent: PetalBot
User-agent: AwarioSmartBot
User-agent: AwarioRssBot
User-agent: LinkedInBot
User-agent: FreshpingBot
User-agent: Pingdombot
User-agent: coccocbot-web
User-agent: coccocbot-image
User-agent: sethbot
User-agent: UptimeRobot
User-agent: Mail.RU_Bot
User-agent: heritrix
Disallow: /

# Zoominfo bots
User-agent: NextGenSearchBot
User-agent: ZoomBot
User-agent: ZoominfoBot
Disallow: /p
Disallow: /c
Disallow: /pic
Disallow: /top-lists
Disallow: /s/search
Disallow: /people-search
Disallow: /companies-search
Disallow: /people
Disallow: /people_directory
Disallow: /financial
Disallow: /tech
Disallow: /sales-leads
Disallow: /lead-generation-tools
Disallow: /zoominfo-chrome-ext

# Bots with Crawl-delay
User-agent: Bingbot
User-agent: DataForSeoBot
Crawl-delay: 1
sitemap.xml 200 OK
Type Sitemap Index URLs 22 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

403https://www.zoominfo.com/
200https://zoominfo.com/

HTTP → HTTPS

301http://zoominfo.com/ → https://www.zoominfo.com/

Consistent

A+
Domain Intelligence
zoominfo.com — via MarkMonitor Inc., 22 years, 10 months old
PASS
zoominfo.com — via MarkMonitor Inc., 22 years, 10 months old
Info::
Domain registered until Jan 30, 2029 (2 years, 9 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: MarkMonitor Inc.
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Domain expiry

959 days

January 30, 2029

SSL certificate

63 days

Issued by Let's Encrypt

Domain age

22 years, 10 months

Registered October 16, 2003

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6810:752b

Registrar

MarkMonitor Inc.

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created October 16, 2003 (22 years, 10 months ago)
Expires January 30, 2029 (2 years, 9 months)
Last Updated June 5, 2025
Name Servers rita.ns.cloudflare.com, tim.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 2606:4700::6810:752b
Data source: rdap (0.2s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 89 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
31 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
17 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
22 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
90 ms
Total Time Total request time from DNS lookup through full response.
90 ms

Connection waterfall

DNS Lookup 31 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 20 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.

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