Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.FRedirect ChainAction5 redirect(s), 1429 ms totalFIX
https://cell.com
141 ms · HTTP/1.1
https://id.elsevier.com/as/authorization...
158 ms · HTTP/1.1
https://www.cell.com/callback?red_uri=%2...
434 ms · HTTP/1.1
https://www.cell.com/
120 ms · HTTP/1.1
https://id.elsevier.com/as/authorization...
159 ms · HTTP/1.1
https://www.cell.com/callback?red_uri=%2...
417 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://cell.com | 302 | 141 ms | HTTP/1.1 | cloudflare |
| 2 | https://id.elsevier.com/as/authorization... | 302 | 158 ms | HTTP/1.1 | cloudflare |
| 3 | https://www.cell.com/callback?red_uri=%2... | 302 | 434 ms | HTTP/1.1 | cloudflare |
| 4 | https://www.cell.com/ | 302 | 120 ms | HTTP/1.1 | cloudflare |
| 5 | https://id.elsevier.com/as/authorization... | 302 | 159 ms | HTTP/1.1 | cloudflare |
| 6 | https://www.cell.com/callback?red_uri=%2... | 302 | 417 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
If permanent, use 301 instead.
302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.
Learn more ▾ ▴
Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).
Source: Google Search Central
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
BTLS Certificate Expiry & Recommendations80 days until leaf cert expires — 5 issues to addressREVIEW
Certificate validity
Recommended actions
- 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
A+DNS Records2 A records, 41 ms lookupPASS
| A | 172.66.0.112, 162.159.140.114 |
| AAAA | — |
| CNAME | — |
| NS | ns1.reedelsevier.com, ns3.reedelsevier.com, ns2.reedelsevier.com |
| MX | 10 cell-com.mail.protection.outlook.com |
| TXT | onetrust-domain-verification=703cad9baa55456ab0ed05c40cd00445 atlassian-domain-verification=2ckcJUmjEfh8TAauQPrWb9eLXpM1UyNHPk+6SmzC3X0tqBzJKZ... miro-verification=edd5a54fc20add96505c5c718975977b28f370a9 ZOOM_verify_W4AuTEx9ROGD4kK_ePkcBA SPF v=spf1 include:spf.protection.outlook.com include:519224.spf06.hubspotemail.net ... pendo-domain-verification=f1e205fa-06f4-4a13-a73a-3e0f82e7f104 NNaG7DvrFpIe+hqV6axdB2BDDbaBT5OUuQ8dl5fRyvYVFnuNb39lU9OREInFizJw5B3FZ91RQjKgRLOa... MS=ms13784580 adobe-idp-site-verification=fd4fae74b683e6e22ef9b491871ae9f0faf7856b8a8588d267e2... onetrust-domain-verification=509af418dcce43c5a6330cd2128ee529 |
| 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.
ACrawlabilityrobots.txt present, no sitemapPASS
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
Sitemap: https://www.cell.com/sitemap-index-1.txt
Sitemap: https://www.cell.com/custom_pages.gz
User-agent: *
Disallow: /action
Disallow: /help
Disallow: /search
Disallow: /feedback
Disallow: /rss
Disallow: /action/clickThrough
Disallow: /action/showLogin
Disallow: /page/account-confirmation-thanks
Disallow: /media
Disallow: /medical-research
Disallow: /servlet/linkout
Disallow: /na101/
Disallow: /na101v1/
Disallow: /na102/
Disallow: /doi/mlt/
Disallow: /cms/attachment/92c526c4-ef1f-4065-b12b-ca4ae0f3e84f/gr1*
Disallow: /personalize/addFavoritePublication
Disallow: /pb/widgets/*
Allow: /action/showJournal
Allow: /action/showXml
Allow: /series
Allow: /isbn
Allow: /doi/book
Allow: /.well-known/*
User-agent: Twitterbot
Allow: /
User-agent: LinkedInBot
Allow: /
User-agent: GPTBot
Disallow: /
User-agent: ChatGPT-User
Disallow: /
User-agent: CCBot
Disallow: /
User-agent: Google-Extended
Disallow: /
User-agent: PerplexityBot
Disallow: /
User-agent: AI2Bot
Disallow: /
User-agent: Amazonbot
Disallow: /
User-agent: anthropic-ai
Disallow: /
User-agent: ClaudeBot
Disallow: /
User-agent: Bytespider
Disallow: /
User-agent: cohere-training-data-crawler
Disallow: /
User-agent: cohere-ai
Disallow: /
User-agent: Diffbot
Disallow: /
User-agent: iAskBot/1.0
Disallow: /
User-agent: meta-externalagent
Disallow: /
User-agent: MistralAI-User
Disallow: /
User-agent: omgili
Disallow: /
User-agent: TimpiBot
Disallow: /
User-agent: YouBot
Disallow: /
Crawl-delay: 1
No sitemap found
Adding a sitemap helps search engines discover your pages.
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencecell.com — via SafeNames Ltd., 32 years, 1 months old, hosted on CloudflarePASS
1863 days
August 21, 2031
80 days
Issued by Google Trust Services
32 years, 1 months
Registered August 22, 1994
Not enabled
Protects against DNS spoofing
Cloudflare
ASN AS13335
162.159.140.114
SafeNames Ltd.
Expiry timeline
Recommended actions
- 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