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74
Total
70
DNS
65
Email
73
Security
50
Network
100
Availability
Domainmartinfowler.com
IPv41
IPv60
MX records7
StatusActive
Domain technical report

martinfowler.com

martinfowler.com

A website on building software effectively

Generated: 2026-08-09T01:28:20-05:00 · Cached result

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IPv41
IPv60
MX7
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

4 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 records20 / 20 pts · Mail

7 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

65 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: ec2-34-198-71-201.compute-1.amazonaws.com

i
IPv4 diversity20 / 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/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
34.198.71.201

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

7 record(s)
30 aspmx4.googlemail.com.
10 aspmx.l.google.com.
30 aspmx5.googlemail.com.
30 aspmx2.googlemail.com.
30 aspmx3.googlemail.com.
20 alt2.aspmx.l.google.com.
20 alt1.aspmx.l.google.com.

TXT

4 record(s)
"fe84e6ee78e44b9ab42d1c3d6a0ab829"
"ef1f6d5bc24c4d21887e34fa86a9b7a9"
"google-site-verification=9O9JTHs3N9Dnxv9ev5W9U74CpHfCZxwovdhP1-OZyo8"
"google-site-verification=OKoHoFLtbk2SWV-8sRAqghwpPDPTkvSWsl0C2EjOhsA"

NS

4 record(s)
ns-1254.awsdns-28.org.
ns-907.awsdns-49.net.
ns-292.awsdns-36.com.
ns-1900.awsdns-45.co.uk.

SOA

1 record(s)
ns-1254.awsdns-28.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

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

Not configured
—

Not configured

DMARC

Configured
v=DMARC1; p=none;

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhC0hs9QECN4VyiEYtKmrfg/VyYrPxqOqDtCkb7QjrkL2aA1XSYTNrtRHJIiVYWxeqjUhDAZmlI0ZiCMxrchkkpdiVgm6yt3f//7zstKzNwWl+BZUj512LmT2iuLRAgmkLYLTR3zNH09gMeYoMhaPEPruwWkERJ4uU4yEqiW3mAGsd6KfmQnfRGwAYiQGejkAt8rPukV8hjc8Azz2eRz+GS01heKe7HJh1tg2T5G7kCcTG50EfriX39eGuwa0bN6R7f4FHfj+T23FFIz7Ghtp6ML+yf6IsOmRemHSDQjaZGP/eH8Vmyhmtv5KYDxgxKccTX7WKI2usp2vQSFng92HCwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
martinfowler.com
Description
A website on building software effectively
Final URL
https://martinfowler.com/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://martinfowler.com/
Version
2
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
www.martinfowler.com
Valid from
2025-09-11T19:00:00-05:00
Valid until
2026-10-13T18:59:59-05:00
Days remaining
65
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
✓
X-Frame-OptionsImplemented
—
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
34.198.71.201
40,35 ms
Cloudflare
1.1.1.1
34.198.71.201
40,28 ms
Quad9
9.9.9.9
34.198.71.201
48,59 ms
OpenDNS
208.67.222.222
34.198.71.201
44,29 ms
AdGuard
94.140.14.14
34.198.71.201
157,21 ms

IP, geolocation and ASNAssociated network information

34.198.71.201

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

aspmx4.googlemail.com

Port 25: Closed/unreachable - 1.1 ms - 
Port 465: Closed/unreachable - 4020.7 ms - 
Port 587: Closed/unreachable - 4017.9 ms -

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