Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DTLS Certificate Expiry & RecommendationsAction8 days until leaf cert expires — 6 issues to addressFIX
Certificate validity
Recommended actions
- Renew certificate — 8 days remaining
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- 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
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityrobots.txt present, no sitemapREVIEW
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-Agent: *
Disallow: /resources/
Allow: /resources/js
Allow: /resources/css
Allow: /resources/images/
Allow: /resources/xml/sitemaps/
Disallow: /fastanswers
Disallow: /my-library*
Disallow: /email-colleague/
Disallow: /add-to-cart/
Disallow: /login*
Disallow: /shopping-cart/
Disallow: /shipping-payment
Disallow: /review-order
Disallow: /order/thank-you/
Disallow: /content/ipad/
Disallow: /newsletters*
Disallow: /product/recommended*
Disallow: /webinar-assessment
Disallow: /search*
Disallow: /academic-subscriptions
Disallow: /alumni-subscriptions
Allow: /resources/html/infographics/2018/ceo-activism-desktop/index.html
Disallow: /resources/html/error/404.html
Disallow: /sponsored/2022/10/disruptors-who-are-changing-their-industries
Disallow: /api/recaptcha/enabled
Disallow: /register?*
Disallow: /resources/css/webscripts.css
User-Agent: 008
Disallow: /
User-Agent: FeedBurner/1.0
Allow: /resources/xml/
User-agent: GPTBot
Disallow: /
User-agent: CCBot
Disallow: /
User-agent: ChatGPT-User
Disallow: /
User-agent: Google-Extended
Disallow: /
No sitemap found
Adding a sitemap helps search engines discover your pages.
A+DNS Records4 A records, 133 ms lookupPASS
| A | 52.84.174.73, 52.84.174.128, 52.84.174.127, 52.84.174.105 |
| AAAA | — |
| CNAME | — |
| NS | ns-469.awsdns-58.com, ns-1877.awsdns-42.co.uk, ns-604.awsdns-11.net, ns-1175.awsdns-18.org |
| MX | 10 mxb-00044a01.gslb.pphosted.com 10 mxa-00044a01.gslb.pphosted.com |
| TXT | atlassian-domain-verification=5VnB9cXf8cZ+rqMksjlq1KyEzUSjGsBJ5irmtvOZtpwtq6AsKS... docusign=59df337d-04fe-422f-bd8e-438fc3e80d21 webexdomainverification.4C675B8B1892B136E053AB06FC0A3F65=7b2ac320-8920-4cf1-826d... ciscocidomainverification=3a5e2e428cc891b6aef0b7598537338dd5c2bf8fe96326d58d87f6... extensis-domain-verification=3decd987-0352-469b-8111-a273b429588a google-site-verification=0fyEgLpijqbt_OMG0ncBIK4G153eKqHF7UeGfTZgZk0 MS=ms51679339 sip=m699vbpan7kdoitobogsq38e1k smartsheet-site-validation=76f6Fdn8EnnOgbwX-KcCnJ5Nj66wRUeo facebook-domain-verification=hvrm85rd5hvr18o50vzpd1lprkjg76 _1nl5kysnqxswpmo75e1u1fdcbs0fptr knowbe4-site-verification=f00a4d6e618b4a00b6f39e0b4c9e093f google-site-verification=ikLo_eYH7jY56yB4qtVoDTxY9WUWl7NkUEsM-UB6DT0 openai-domain-verification=dv-yzIW4FvevpXrgKYrQ9Ndlm4V lyncdiscover = seh3q1rpvadu98fpk213q7htq2 google-site-verification=P1JGD_hnkAqlxSPmsFW_M2nifpmJC2iBjnfmKi1uJCc SPF v=spf1 ip4:167.89.5.215 include:hbsp.harvard.edu include:amazonses.com include:u... google-site-verification=o-E502ZnlfSSAM2JRb0RUfIxROmYDcYVOZnzlVRknS0 Wo71J1PNbWKkAikjb4WeqxCjBcNQwf6hcll0LJM6s9peRMF1ImcaCENQfddffLROaJY6wZHW2jrUsDNX... onetrust-domain-verification=0df7d79642a64b338bb91818045b158d |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+Redirect ChainNo redirects — direct accessPASS
https://hbr.org
489 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://hbr.org | 200 | 489 ms | HTTP/1.1 |
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencehbr.org — via MarkMonitor Inc., 29 years, 9 months old, hosted on AWSPASS
508 days
December 4, 2027
8 days
Issued by DigiCert Inc
29 years, 9 months
Registered December 5, 1996
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
52.84.174.105
MarkMonitor Inc.
Expiry timeline
Recommended actions
- Renew the TLS certificate or verify auto-renewal is working
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
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.
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