Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Probed from Amsterdam, Netherlands

301 Moved Permanently

Checks

4 PASS 4 REVIEW 1 FIX

Redirect Chain

Action

5 redirect(s), 482 ms total

FIX

5 redirect(s), 482 ms total

5 redirects before reaching final URL

Each redirect adds latency. Try to minimize the chain to 1 hop.

WWW normalization redirect

Uses 302 (temporary) redirect

If permanent, use 301 instead.

Got: https://idp.nature.com/authorize?response_type=cookie&client_id=grover&redirect_uri=https%3A%2F%2Fwww.nature.com%2Fnature

Cross-domain redirect detected

https://nature.com

10 ms · HTTP/1.1

301

https://www.nature.com/

105 ms · HTTP/1.1

303

https://idp.nature.com/authorize?respons...

62 ms · HTTP/1.1

302

https://idp.nature.com/transit?redirect_...

21 ms · HTTP/1.1

302

https://www.nature.com/nature?error=cook...

78 ms · HTTP/1.1

301

https://www.nature.com?error=cookies_not...

206 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://nature.com	301	10 ms	HTTP/1.1	ee-www-redirect
2	https://www.nature.com/	303	105 ms	HTTP/1.1	Oscar Platform 0.2165.0
3	https://idp.nature.com/authorize?respons...	302	62 ms	HTTP/1.1
4	https://idp.nature.com/transit?redirect_...	302	21 ms	HTTP/1.1
5	https://www.nature.com/nature?error=cook...	301	78 ms	HTTP/1.1	Oscar Platform 0.2165.0
6	https://www.nature.com?error=cookies_not...	200	206 ms	HTTP/1.1	Oscar Platform 0.2165.0

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

If permanent, use 301 instead.

Why this matters

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

IPv6 Readiness

Action

No IPv6 support

REVIEW

No IPv6 support

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

Crawlability

robots.txt present, sitemap with 38834 URLs

REVIEW

robots.txt present, sitemap with 38834 URLs

robots.txt is present

Got: 2640 bytes

sitemap.xml is present

sitemap.xml contains invalid XML

Search engines may not be able to parse the sitemap. Fix XML validation errors.

sitemap.xml contains 38834 entries

Sitemap index with 38833 child sitemaps

robots.txt references sitemap

Search engines may not be able to parse the sitemap. Fix XML validation errors.

Why this matters

An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.

Learn more ▾

Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.

Source: sitemaps.org / Google Search Central

robots.txt 200 OK

Size 2640 B Sitemaps referenced 4 User-agents GoogleOther, meta-externalagent, CCBot, FacebookBot, cohere-ai, img2dataset, omgilibot, Claude-Web, *, Bytespider, ClaudeBot, YouBot, ImagesiftBot, FriendlyCrawler, omgili, ChatGPT-User, anthropic-ai, Applebot-Extended, GPTBot, PerplexityBot, Diffbot, Amazonbot, Google-Extended Blocking No — crawling allowed

User-agent: *
Sitemap: https://www.nature.com/sitemap.xml
Sitemap: https://www.nature.com/subjects/sitemap.xml
Sitemap: https://www.nature.com/naturecareers/sitemapindex.xml
Sitemap: https://www.nature.com/latest-news/sitemap.xml
Disallow: /search
Disallow: */1000$
Disallow: /*/*/*/pf/
Disallow: /*.otmi$
Disallow: /*/*/*/*/otmi/
Disallow: /*/*/*/*/fp/
Disallow: /protocolexchange/labgroups/
Disallow: /naturecareers/jobs/search
Disallow: /webcasts/*
Disallow: /*draft=*
Disallow: /*foxtrotcallback=*
Disallow: /*origin=*
Disallow: /my-account
Disallow: /*proof=t%2Btarget%3D\*
Disallow: /*proof=*
Disallow: /*/figures
Disallow: /*/tables
Disallow: /*/schemes
Disallow: /*/structures
Disallow: /*/metrics
Disallow: /platform/contextual
Disallow: /articles/*.ris
Disallow: /nature-index/article-api/
Disallow: /nature-index/articles/saudi-arabia
Disallow: /nature-index/articles/saudi-arabia-altmetric
Disallow: /nature-index/city-maps/
Disallow: /nature-index/country-outputs-api/
Disallow: /nature-index/country-suggestion
Disallow: /nature-index/country-suggestion/news-archive
Disallow: /nature-index/global-city-map/data
Disallow: /nature-index/institution-outputs-api/
Disallow: /nature-index/institution-suggestion
Disallow: /nature-index/institution-suggestion/news-archive
Disallow: /naturecareers/session-img/
Disallow: /naturecareers/jobsrss/
Disallow: /nature-index/annual-tables/export/
Disallow: /nature-index/country-outputs/export/
Disallow: /nature-index/country-territory-research-output/export
Disallow: /nature-index/institution-outputs/export/
Disallow: /nature-index/institution-research-output/export
Disallow: /nature-index/news/archive/search/by-country
Disallow: /nature-index/news/archive/search/by-institution
Disallow: /nature-index/annual-tables/2021/academic-normalized
Disallow: */platform/disqus*
Disallow: */cas-redirect/*
User-Agent: Amazonbot
Disallow: /
User-Agent: anthropic-ai
Disallow: /
User-Agent: Applebot-Extended
Disallow: /
User-Agent: Bytespider
Disallow: /
User-Agent: CCBot
Disallow: /
User-Agent: ClaudeBot
Disallow: /
User-Agent: FacebookBot
Disallow: /
User-Agent: GPTBot
Disallow: /
User-Agent: Google-Extended
Disallow: /
User-Agent: GoogleOther
Disallow: /
User-Agent: PerplexityBot
Disallow: /
User-Agent: YouBot
Disallow: /
User-Agent: meta-externalagent
Disallow: /
User-Agent: ImagesiftBot
Disallow: /
User-Agent: cohere-ai
Disallow: /
User-Agent: Diffbot
Disallow: /
User-Agent: FriendlyCrawler
Disallow: /
User-Agent: img2dataset
Disallow: /
User-Agent: omgili
Disallow: /
User-Agent: omgilibot
Disallow: /
User-Agent: Claude-Web
Disallow: /
User-Agent: ChatGPT-User
Disallow: /

sitemap.xml 200 OK

Type Sitemap Index URLs 38834 entries Valid XML No

Child Sitemaps:

URL Variants

www/non-www, trailing slash, HTTP→HTTPS

REVIEW

www/non-www, trailing slash, HTTP→HTTPS

HTTP version does not redirect to HTTPS

Got: HTTP 301 Expected: 301 redirect to HTTPS

www / non-www

303https://www.nature.com/

200https://nature.com/

HTTP → HTTPS

301http://nature.com/ → http://www.nature.com/

HTTP version does not redirect to HTTPS

TLS Certificate Expiry & Recommendations

40 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

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

A+

DNS Records

1 A records, 15 ms lookup

PASS

1 A records, 15 ms lookup

Resolves to 1 IPv4 address(es)

Got: 151.101.204.95

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

No IPv6 (AAAA) records

6 nameserver(s) configured

Got: pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk

2 mail exchanger(s) configured

CAA records not checked

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

SPF record present in TXT

DNS resolution time: 15 ms

Got: 15 ms

A	151.101.204.95
AAAA	—
CNAME	—
NS	pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk
MX	10 mxa-002c5801.gslb.pphosted.com 10 mxb-002c5801.gslb.pphosted.com
TXT	MS=ms77610658 MS=ms87841658 rpi5f08jedse2mt8382r95tj80. Hello GlobalSign CEOS1602043687 klaviyo-site-verification=RGffrp klaviyo-site-verification=SfRYxc klaviyo-site-verification=U8sqV2 klaviyo-site-verification=UNZdq4 klaviyo-site-verification=UzNPXX lovable_verification=RRjvRYYzlyNRyQgjsp9U docusign=67f44eaf-0dbe-458b-b10f-47bed1b15935 docusign=7172e4ac-506c-48bb-9a02-40aa4f5970e4 canva-site-verification=0eQ4w0o1XIdbPUk-R__uFQ 1password-site-verification=55KOGYWRMNDKRKUTDFSXF3WSYY openai-domain-verification=dv-HAPMMiP9yzTJ3yFoeETfV7vd shopify-verification-code=JAHiN7KQ1pbmGdnz9wgaKYgm5VCazy deepl-domain-verification=b8faec8a0acd4830a6c745d36a104c04 facebook-domain-verification=jkc3tvps7b0r4s2a8go26hb3mur2ug onetrust-domain-verification=2fb9af66a4f8427c81ef817cc2fc7e5a anthropic-domain-verification-gbdrks=ymGP6KhyvFPcXIZ715PJVvZ3L extensis-domain-verification=247a2c5e-b2c3-477e-a1a1-69522ce10b98 monday-com-verification=gAZywa4vaGsfLg6nd5lzh_H0u2mYn7u-W075cd-3X78 monday-com-verification=gIfsbiBtQzvmY8SR8gmXmURzurNdeyafwCzP_vHk4wk google-site-verification=98cpzBJjv18c55LqVgp5mgYFTzGU6fLcF5t9GoTbbog google-site-verification=HHD68pull8xzsrxD3nrcvVeVgIWS8Ou3WfObgKmsAeU google-site-verification=MMKRJQfefRehxhwEreFHykRsf_auok6vGwCrP1fz-r4 google-site-verification=ieCNIjjta99aFWzeD9Mhze-lTbXHZo6GAc-MgXlclL4 google-site-verification=k7pclGN55ftDU-TcQZ1EkFy7EBSsxDUY79dYzxeVTQA google-site-verification=tYWiePuSRFUVlICaU0QdGNwirIvpr0YcTjConBwD6Cc zapier-domain-verification-challenge=3621a905-479a-4476-b1c9-c153c4b7537c _globalsign-domain-verification=IG4UdrI9gc_SVSE132aTagdWhxkvONdbIBhHhhcMlP adobe-idp-site-verification=e7d316e26179ad0d4b3f90cf2a0754eec7efe5ffd4e42fd68fb1... cisco-ci-domain-verification=22a12fd0333f8053f7ff6792fa99da4b2a9f4833da46146e49c... cisco-ci-domain-verification=2994122b15fd1403b4a698555609ab4fa873bf7e2dcbd7c3ab1... atlassian-domain-verification=8YyRB1dGCFU6FTIcUt18raWzPoKaOFUG7xiFOkac8XcGVOZgEt... figma-domain-verification=a02807ceec187285dae088008460ab5e258fd494d08ac0c2c56f37... SPF v=spf1 ip4:195.128.10.18/32 ip4:195.128.10.15/32 ip4:195.128.10.69/32 ip4:195.12...
CAA	Lookup not available with standard resolver

Resolved in 15 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+

Domain Intelligence

nature.com — via CSC Corporate Domains, Inc., 32 years, 1 months old, hosted on Fastly

PASS

nature.com — via CSC Corporate Domains, Inc., 32 years, 1 months old, hosted on Fastly

Domain registered until Aug 10, 2026 (3 months remaining)

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.

Registrar: CSC Corporate Domains, Inc.

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.

Hosting: Fastly

Got: AS54113

Domain expiry

27 days

August 10, 2026

SSL certificate

40 days

Issued by Let's Encrypt

Domain age

32 years, 1 months

Registered August 11, 1994

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Fastly

ASN AS54113

151.101.204.95

Registrar

CSC Corporate Domains, Inc.

Unlocked 6 NS records

Expiry timeline

Today

+1 year

Domain expiry SSL expiry Danger zone (≤30 days)

Recommended actions

Renew the domain or enable auto-renewal to prevent accidental expiry
Enable DNSSEC to protect visitors from DNS spoofing
Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers

Registrar CSC Corporate Domains, Inc.

Created August 11, 1994 (32 years, 1 months ago)

Expires August 10, 2026 (3 months)

Last Updated August 6, 2024

Name Servers pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk

DNSSEC Not enabled

Hosting

IP Address 151.101.204.95

ASN AS54113 (FASTLY - Fastly, Inc., US)

Provider Fastly

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 21 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

11 ms

TCP Connect

1 ms

TLS Handshake

5 ms

Time to First Byte

21 ms

Total Time

21 ms

Connection waterfall

DNS Lookup 11 ms TCP Connect 1 ms TLS Handshake 5 ms Server Processing 4 ms Content Transfer 0 ms

A+

CDN & Delivery

Fastly (HIT)

PASS

Fastly (HIT)

Site is served via Fastly CDN

Got: x-served-by: cache-rtm-ehrd2290058-RTM

CDN cache status: HIT

CDN Detected: Fastly

Provider Fastly Cache Status HIT Evidence x-served-by: cache-rtm-ehrd2290058-RTM

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.