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https://mskcc.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 4 REVIEW
C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.mskcc.org/
200https://mskcc.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://mskcc.org/ https://www.mskcc.org/

Consistent

B
TLS Certificate Expiry & Recommendations
83 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

83
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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: 9f07f37f5dfb7e80-CDG
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9f07f37f5dfb7e80-CDG
A+
DNS Records
2 A records, 162 ms lookup
PASS
2 A records, 162 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.6.212, 104.18.7.212
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: a20-64.akam.net, a3-66.akam.net, a18-64.akam.net, a22-65.akam.net, a1-134.akam.net, a5-67.akam.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: 162 ms
Got: 162 ms
A104.18.6.212, 104.18.7.212
AAAA
CNAME
NSa20-64.akam.net, a3-66.akam.net, a18-64.akam.net, a22-65.akam.net, a1-134.akam.net, a5-67.akam.net
MX
10 mxb-00402601.gslb.pphosted.com
10 mxa-00402601.gslb.pphosted.com
TXT
openai-domain-verification=dv-K76wjzuTvBlAVFvXmhJpM2OL
Qn_8WduwfHYY2A6hPFowkIsSJQ
1WzLav0IwSShm-pgwKOm
09beb289-12ab-4d91-b48a-56585266d6da
google-site-verification=6N-oHNsc3XUO64UNuffVXtsc7KglnuAiPQ8vvWtqFWs
google-site-verification=z2NGRYKRpbnRMIzWWkZ1ezmDMmvbBLCirDnYS5v2i50
google-site-verification=mAHvMdCSp4-YCyLxxkP_KQVF5UbMYXrr8Sy_Cq0PdiI
flexera-domain-verification-vwuhxezcrfbmpuhz
_szd489l5b2ii8knrmkao1k66ywuimh7
q/U6tr8sT4oxToSxJChIQQFOV4iexKXqbNKqA1hnZk2G0EbouOhfuttWCPq+q+fKb84PCgWcBkSpYsxd...
adobe-sign-verification=25ba5e7affb87dfdc04356730be8992
_a267vzbfqca2m2dnvteurthnb173zdj
jamf-site-verification=3cVPbLvIYlifplNbe6bhnw
miro-verification=ba02fcfe3dabdbc013b11c3d8e8949be390d7c3f
MS=ms94440000
atlassian-domain-verification=LUmLCJicpzD1/2UaFdML8EcVmwMq6hykxzT105XMkZlZTW31UP...
hosting-site=msk-jh-production
hcp-domain-verification=1db8cc011f1d1dc467a792f9f14ecaf6ae44baf9ef9ce2b1b3a8715d...
84hfoNCXMXbobC6IakYhylHcFzCCgMoChanTwGjYowx7Mk0aI0DKYxkuGvTvju
docker-verification=6ae93dd3-5b71-4ec2-875f-fbd494a2b483
google-site-verification=WIIRq9nA7ImTqR0zMB_f3h-ugfgUV-E5ujfppEkbUh8
adobe-idp-site-verification=b348fbab6c3af396a18ab2a10a3a3b2092f18873f86c4150435b...
facebook-domain-verification=ygb8f6jzej7p4hpt2aguwoh9eoewmg
ca3-7da0f410f9624f4fae6dcf9ccf2ccf2e
cloudhealth=25ce480b-5ef6-4089-9a08-878db39248fb
apple-domain-verification=cuaqvRNebK151eag
apple-domain-verification=IqHHmIMLJ1dLOwu9
84hfoNCXMXbobC6IakYhylHcFzCCgMoChanTwGjYowx7Mk0aI0DKYxkuGvTvju/wfAPcO4qIY1axbA16...
SPF v=spf1 include:spf5.mskcc.org include:spf6.mskcc.org include:spf.protection.outl...
86435eeb-c8c2-4772-a535-4404caf56b47
ciscocidomainverification=57151d093a777cee26b3577ddaa91efd6fc7e1c53d65da5a2ef0e7...
google-site-verification=fKJxdl0vsJDL1Y_H655_5YHJr6_ZbPYVd_cQT1mzTqc
CAALookup not available with standard resolver
Resolved in 162 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), 311 ms total
PASS
1 redirect(s), 311 ms total
Info::
Single redirect
Got: https://mskcc.org → https://www.mskcc.org/ (301)
Info::
WWW normalization redirect

https://mskcc.org

67 ms · HTTP/1.1

301

https://www.mskcc.org/

244 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://mskcc.org30167 msHTTP/1.1cloudflare
2https://www.mskcc.org/200244 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 33 URLs
PASS
robots.txt present, sitemap with 33 URLs
Info::
robots.txt is present
Got: 9624 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 33 entries
Info::
Sitemap index with 33 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 9624 B Sitemaps referenced 2 User-agents *, Twitterbot Blocking No — crawling allowed
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# Crawl Delay added to slow down some well behaving bots.
Crawl-delay: 10
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg

# Directories
Disallow: /core/
Disallow: /profiles/

# Files
# Although deprecated, leaving Noindex for non-html files. This can/should be moved to nginx config.
Noindex: /README.txt
Noindex: /web.config

Disallow: /README.txt
Disallow: /web.config

# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips/
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register/
Disallow: /user/password/
Disallow: /user/login/
Disallow: /user/logout/

# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips/
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password/
Disallow: /index.php/user/register/
Disallow: /index.php/user/login/
Disallow: /index.php/user/logout/

################################################################################

# Core
Disallow: /book/export/

# MSK: Content-types
Disallow: /block/
# Disallow: /podcasts/
# Disallow: /slideshows/
# Disallow: /teaser/
Disallow: /term/
# Disallow: /media-coverage/

# MSK: Modules and entities
# Disallow: /dialog
Disallow: /msk_markup/
# Disallow: /taxonomy/
Disallow: /templates
# Disallow: /user/

# MSK tools
# Disallow: /print
# Disallow: /pdf
# Disallow: /mail
# Disallow: */print/
# Disallow: */pdf/

# MSK: Redirects
Disallow: */redirect$
Disallow: */redirect-01$
Disallow: */redirect-02$
Disallow: */redirect-03$
Disallow: */redirect-04$
Disallow: */redirect-05$
Disallow: */redirect-06$
Disallow: */redirect-07$
Disallow: */redirect-08$
Disallow: */redirect-09$
Disallow: */redirect-10$

################################################################################

# MSK: Old website

Disallow: /mskcc/print/


# MSK: Misc.

Disallow: /calgbtraining

# Disallow: /cancer-care/patient-education/herbs/

Disallow: /drupal-guide

Disallow: /msk-prepare

Disallow: /experience/become-patient/first-appointment/begin-registration-msk-your-first-visit

Disallow: /archived

Disallow: /news/available-download

Disallow: /appointments/request-appointment-01

Disallow: /ario2016/presentations

Disallow: /monmouthopening

Disallow: /hcp-education-training/medical-students/elective/apply/canadian-medical-students/students-international-medical-schools

Disallow: /research-advantage/core-facilities/comparative-medicine-pathology-0/new-animal-user-onboarding

Disallow: /videos/msk-kimmel

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/meditation-101

Disallow: /departments/surgery/endometrial-cancer-research-day

Disallow: /community-affairs/programs-services/high-school-outreach/registration-major-trends

Disallow: /research-programs/cell-engineering/eleventh-annual-center-cell-engineering-retreat

Disallow: /experience/become-patient/remotesecondopinion

Disallow: /sites/default/files/node/168388/documents/sample-remote-2nd-opinion-report-2.pdf

Disallow: /sites/default/files/node/168388/documents/sample-remote-2nd-opinion-report-2_0.pdf

Disallow: /videos/msk-impact-informational-video

Disallow: /hcp-education-training/cne/msk-2-day-cne-discounted-fee

Disallow: /hcp-education-training/cne/msk-1-day-cne-discounted-fee

Disallow: /departments/division-subspecialty-medicine/integrative-medicine/fundamentals-oncology-acupuncture-online-course

Disallow: /lw

Disallow: /profile/kathleen-foley

Disallow: /videos/anusha

Disallow: /videos/how-can-msk-direct-care-advisor-help-me-and-my-family

Disallow: /videos/msk-direct-getting-right-diagnosis

Disallow: /elc

Disallow: /lung-screening/not-eligible

Disallow: /lung-screening/eligible

Disallow: /videos/innovations-breast-screening

Disallow: /direct/*

Disallow: /profile/jerome-posner

Disallow: /research-programs/stem-cell-biology/2020-gforce-meeting

Disallow: /patient-screening-form

Disallow: /remote-access-resources-msk-employees

Disallow: /research-programs/cell-engineering/special-events/twelfth-annual-center-cell-engineering-retreat

Disallow: /hics-medical-staff-redeployment-registration-form

Disallow: /mayor-de-blasio-press-conference

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/therapies/how-we-can-help-you-stay-calm-and-connected-through-covid-19

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/therapies/how-we-can-help-you-stay-calm-and-connected-through-covid-19/mind-body-and-spirit-classes

Disallow: /msk-strategic-partnerships-resources-and-information-hub

Disallow: /videos/msk-cancer-alliance-final

Disallow: /videos/msk-cancer-alliance-quality-lecture-series-skin-toxicities-patients-receiving-targeted-therapy

Disallow: /videos/msk-survivorship-lecture-series-food-choice-during-and-after

Disallow: /videos/msk-survivorship-lecture-series-cancer-immunotherapy-101-overview-non-oncologist

Disallow: /videos/how-treat-cns-lymphoma-mskcc-bmt-lecture-series

Disallow: /videos/quality-and-outcomes-lecture-series-radiation-related-mucositis

Disallow: /departments/radiology/radiology-image-request

Disallow: /msk-why

Disallow: /drupal-training-registration-form

Disallow: /index.php/*

Disallow: /msk-news/fall-2020/nursing-excellence-honored-robbins-family-awards

Disallow: /msk-news/spring-2020/infectious-disease-specialist-mini-kamboj-discusses-covid-19

Disallow: /msk-news/spring-2020/msk-enters-new-era-opening-david-koch-center-cancer-care-msk-cancer

Disallow: /resource-sheet

Disallow: /videos/multidisciplinary-management-early-stage-triple-negative-and-her-2-breast-cancers-neoadjuvant-therapy

Disallow: /videos/personalized-treatment-soft-tissue-sarcoma-primary-management

Disallow: /event/optimal-living-program-exercise-and-breast

Disallow: /optimal-living-program-exercise-and-breast-cancer-series

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/membership/renewal-form

Disallow: /experience/become-patient/becoming-patient

Disallow: /videos/united-face-crisis-msk-s-response-covid-19

Disallow: /lung-cancer-awareness-month-day-1-events-1-00-pm-5-00-pm

Disallow: /lung-cancer-awareness-month-day-2-events-10-00-am-2-00-pm

Disallow: /videos/personalized-treatment-recurrent-and-metastatic-soft-tissue-sarcoma

Disallow: /nursing-request-redeployment-staff

Disallow: /nursing-offer-redeploy-staff

Disallow: /ert-c*

Disallow: /research-advantage/marie-josee-kravis-women-science-endeavor-wise/kravis-wise-symposium

Disallow: /coronavirus/update-msk-community-covid-19-vaccines

Disallow: /coronavirus/una-actualizacion-para-nuestra-comunidad-msk-sobre-las-vacunas-contra-la-covid-19

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/membership/integrative-medicine-home-member-resources

Disallow: /videos/morning-meditation

Disallow: /videos/chair-yoga

Disallow: /videos/beginner-mat-yoga

Disallow: /videos/30-minute-fitness-everyone

Disallow: /videos/60-minute-fitness-everyone

Disallow: /videos/barre-basics

Disallow: /videos/barre-express

Disallow: /videos/dance-cardio

Disallow: /videos/core-strength

Disallow: /videos/fitness-everyone

Disallow: /videos/guided-imagery-meditation-mountain-walk

Disallow: /videos/guided-imagery-meditation-floating-ocean

Disallow: /videos/tai-chi

Disallow: /videos/intermediate-mat-yoga

Disallow: /cancer-care/diagnosis-treatment/symptom-management/integrative-medicine/membership/integrative-medicine-home-member-resources/videos

Disallow: /employee-town-hall-question

Disallow: /hcp-education-training/cne/aphon-chemotherapy-biotherapy-course

Disallow: /msk-search-feedback

Disallow: /join-us-gsk-cocktail-reception

Disallow: /sites/default/files/node/2739/documents/2021-dos-research-booklet.pdf

Disallow: /mskdirect/msk-kids-testimonial

Disallow: /videos/september-2022-surgical-oncology-talk

Disallow: /surgical-oncology-teaching-conference

Disallow: /videos/causal-inference-methods-observational-research

Disallow: /teaser/msk-direct-summit-24-flyers.pdf

Disallow: /teaser/patient-report.pdf

Disallow: /appointments/request-appointment-rapid-diagnosis

Disallow: /teaser/asco-quality-care-symposium-poster.pdf

Disallow: /teaser/2025-msk-direct-marketing-toolkit.pdf

Disallow: /teaser/firefighter-cancer-support-network.pdf

Disallow: /teaser/msk-direct-clinical-leadership-roundtable.pdf


# MSK: Sitemap

Sitemap: https://www.mskcc.org/sitemap.xml


# MSK: News Sitemap

Sitemap: https://www.mskcc.org/news.xml


User-agent: Twitterbot

Allow: /news*

Allow: /news-releases*

Allow: /cancer-care/types*

Allow: /cancer-care/patient-education/*

Allow: /cancer-care/integrative-medicine/herbs*


sitemap.xml 200 OK
A+
Domain Intelligence
mskcc.org — via Network Solutions, LLC, 36 years, 5 months old, hosted on Cloudflare
PASS
mskcc.org — via Network Solutions, LLC, 36 years, 5 months old, hosted on Cloudflare
Info::
Domain registered until May 19, 2029 (3 years, 1 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: Network Solutions, LLC
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.
Info::
Hosting: Cloudflare
Got: AS13335
Domain expiry

1039 days

May 19, 2029

SSL certificate

83 days

Issued by Google Trust Services

Domain age

36 years, 5 months

Registered May 18, 1990

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

104.18.6.212

Registrar

Network Solutions, LLC

Unlocked 6 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 Network Solutions, LLC
Created May 18, 1990 (36 years, 5 months ago)
Expires May 19, 2029 (3 years, 1 months)
Last Updated November 18, 2025
Name Servers a1-134.akam.net, a18-64.akam.net, a20-64.akam.net, a22-65.akam.net, a3-66.akam.net, a5-67.akam.net
DNSSEC Not enabled
Hosting
IP Address 104.18.6.212
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.4s)

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 106 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
45 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.
107 ms
Total Time Total request time from DNS lookup through full response.
107 ms

Connection waterfall

DNS Lookup 45 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 22 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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