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74
Total
70
DNS
50
Email
77
Security
65
Network
100
Availability
Domainmsdmanuals.com
IPv42
IPv60
MX records0
StatusActive
Domain technical report

The Trusted Provider of Medical Information since 1899

msdmanuals.com

The MSD Manuals are the global standard in medical reference for Doctors, Students & Consumers - since 1899.

Generated: 2026-08-09T00:51:49-05:00 · Cached result

JSONCSVPDFVisit site
IPv42
IPv60
MX0
NS8

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

8 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

!
MX records0 / 20 pts · Mail

0 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

183 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: af6f849e18e4a0c33.awsglobalaccelerator.com

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
3.33.166.197
166.117.53.172

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

0 record(s)
—

Not configured

TXT

6 record(s)
"google-site-verification=z3f91tBhNW1CHTQGJL1YFbkR982996VQ3Ez07cGUkgc"
"google-site-verification=fm_DC-mO5FrKVbZ057qlUM0JE-4Nv-WEDjbvHjMdzCI"
"google-site-verification=FGxdvx2_VP9u1TDuQZHhgNEbiR9BqrcPkhYpRJ_2i1s"
"lx5c2krwpbw8hr5sx6mwwlc1s060j5m0"
"ktmt32d3sngf5m9fggy14vj1jrry24dw"
"v=spf1 -all"

NS

8 record(s)
ns02.msddns.com.
dns4.p03.nsone.net.
dns2.p03.nsone.net.
ns04.msddns.com.
dns1.p03.nsone.net.
dns3.p03.nsone.net.
ns01.msddns.com.
ns03.msddns.com.

SOA

1 record(s)
dns1.p03.nsone.net. hostmaster.nsone.net. 1743015372 43200 7200 1209600 3600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 -all

DMARC

Configured
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:dcm_rua_reports@merck.com; ruf=mailto:dcm_ruf_reports@merck.com

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
The Trusted Provider of Medical Information since 1899
Description
The MSD Manuals are the global standard in medical reference for Doctors, Students & Consumers - since 1899.
Final URL
https://www.msdmanuals.com/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.msdmanuals.com/
Version
3
Server
WEBREDS
X-Powered-By
Next.js

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
webreds.americas-cert5.cf.webappsp.com
Valid from
2026-07-24T19:00:00-05:00
Valid until
2027-02-08T17:59:59-06:00
Days remaining
183
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

3 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
—
X-Frame-OptionsNot detected
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
166.117.53.172, 3.33.166.197
86,64 ms
Cloudflare
1.1.1.1
166.117.53.172, 3.33.166.197
66,11 ms
Quad9
9.9.9.9
166.117.53.172, 3.33.166.197
32,78 ms
OpenDNS
208.67.222.222
166.117.53.172, 3.33.166.197
106,10 ms
AdGuard
94.140.14.14
166.117.53.172, 3.33.166.197
67,32 ms

IP, geolocation and ASNAssociated network information

3.33.166.197

No data
success
No
country
region
city
asn
organization
isp

166.117.53.172

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

msdmanuals.com

Port 25: Closed/unreachable - 0.6 ms - 
Port 465: Closed/unreachable - 4018.9 ms - 
Port 587: Closed/unreachable - 4020 ms -

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