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https://medscape.com

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.medscape.com/
200https://medscape.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

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

Certificate validity

47
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • 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: 9efee087780e6fdc-CDG
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9efee087780e6fdc-CDG
A+
DNS Records
2 A records, 91 ms lookup
PASS
2 A records, 91 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.64.150.155, 104.18.37.101
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: cloe.ns.cloudflare.com, tim.ns.cloudflare.com
Info::
5 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: 91 ms
Got: 91 ms
A172.64.150.155, 104.18.37.101
AAAA—
CNAME—
NScloe.ns.cloudflare.com, tim.ns.cloudflare.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
figma-domain-verification=0dbb4f08fee06c7b23d8ad4539219978da50b5243e5382b2841a64...
e8f9eddc53c14ef199e410bcb5aa9d99
google-site-verification=RLDNtwBw56oKslxGAHmoVn9OI2TgTIOt6T0yLCt6-ug
google-site-verification=UB_Litv1IsOfYsncZkkEZ5dEziDnFXYDBPKPzN8WElY
google-site-verification=Wl_DaCk9tIPQcKD0VOHGhZLuGk-RUj8kOPdUhGSoSgU
globalsign-domain-verification=-8kpivpbgMACeanB8hk0ansSLujEnFA_i1ukkwKY1Y
gfydpjf76dm43nnl84tmtxyjlwfsbtxh
facebook-domain-verification=9ueb843ricuvxh05e6r4p0fn2tkf6q
google-site-verification=twlUOWdJkVAeF_1SZM7GNA2pB6NqV9XJ8Yu7gX3CgaI
MS=ms38444379
khpqd4ttp846lkds1k84qp5xprd273d0
spf2.0/pra include:cust-senderid.exacttarget.com -all
pardot_365131=adc297b29d095e2afa960e199475c099945c7da6e994a85953f037da6e5df9b4
SPF v=spf1 ip4:98.158.192.0/20 include:_spf.google.com include:mail.zendesk.com incl...
adobe-idp-site-verification=273cee5ce44db359754043668120f4ccf0076e55a5fe663ce1bc...
google-site-verification=xkjH88tvIiaP24kPw9I4mI6BrzWW1oU5n-CouqRR29E
facebook-domain-verification=hfi2yui4prfcbgk4ai4m9cugny9a5k
google-site-verification=2cgFb1KJ2qaE--rH_-xrn_fmGqlyJE1nF0tW2Xf28-E
CAALookup not available with standard resolver
Resolved in 91 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), 317 ms total
PASS
1 redirect(s), 317 ms total
Info::
Single redirect
Got: https://medscape.com → https://www.medscape.com/ (301)
Info::
WWW normalization redirect

https://medscape.com

63 ms · HTTP/1.1

301

https://www.medscape.com/

254 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://medscape.com30163 msHTTP/1.1cloudflare
2https://www.medscape.com/200254 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 12 URLs
PASS
robots.txt present, sitemap with 12 URLs
Info::
robots.txt is present
Got: 861 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 12 entries
Info::
Sitemap index with 12 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 861 B Sitemaps referenced 1 User-agents Amazonbot, SeekportBot, *, ClaudeBot, Arquivo-web-crawler, GPTBot, CCBot, magpie-crawler, PerplexityBot Blocking No — crawling allowed
User-agent: *

Disallow: /viewprogram/*_pnt
Disallow: /druginfo/monoinfobyid*
Disallow: /cp/*
Disallow: /memberprofile/*
Disallow: /noscan/
Disallow: /*/noscan/
Disallow: /viewarticle*_print
Disallow: /viewarticle*_reference
Disallow: /s/
Disallow: /index/*&aspen 
Disallow: /index/*&d2Previous
Disallow: /consult/
Disallow: /mtv/
Disallow: /marketresearch
Disallow: /sites/public/marketresearch
Disallow: /features/mktg/public/pmr
Disallow: /register?*
Disallow: /search/
Disallow: /px/*
Disallow: /ai-search*

Sitemap: https://www.medscape.com/sitemap_index.xml

User-agent: GPTBot
Disallow: /

User-agent: CCBot
Disallow: / 

User-agent: magpie-crawler
Disallow: /

User-Agent: PerplexityBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Amazonbot
Disallow: /

User-agent: Arquivo-web-crawler
Disallow: /

User-agent: SeekportBot
Crawl-delay: 2
sitemap.xml 200 OK
Type Sitemap Index URLs 12 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
medscape.com — via MarkMonitor Inc., 27 years, 6 months old, hosted on Cloudflare
PASS
medscape.com — via MarkMonitor Inc., 27 years, 6 months old, hosted on Cloudflare
Info::
Domain registered until Mar 4, 2027 (10 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.
Info::
Hosting: Cloudflare
Got: AS13335
Domain expiry

232 days

March 4, 2027

SSL certificate

47 days

Issued by Let's Encrypt

Domain age

27 years, 6 months

Registered March 4, 1999

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

104.18.37.101

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 March 4, 1999 (27 years, 6 months ago)
Expires March 4, 2027 (10 months)
Last Updated January 31, 2026
Name Servers cloe.ns.cloudflare.com, tim.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 104.18.37.101
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.3s)

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 96 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
32 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
16 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.
96 ms
Total Time Total request time from DNS lookup through full response.
96 ms

Connection waterfall

DNS Lookup 32 ms TCP Connect 16 ms TLS Handshake 22 ms Server Processing 26 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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