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Total

DNS

Email

Security

Network

100

Availability

Domaindev.to

IPv44

IPv60

MX records1

StatusActive

Domain technical report

DEV Community

dev.to

A space to discuss and keep up software development and manage your software career

Generated: 2026-08-08T20:11:25-05:00 · Cached result

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IPv44

IPv60

MX1

NS2

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

2 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

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

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

125 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓

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

4 record(s)

151.101.2.217
151.101.66.217
151.101.130.217
151.101.194.217

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

1 smtp.google.com.

TXT

9 record(s)

"google-site-verification=hYKC4ZHVusetfIZ9sOj8FDe9muuOExmXxH2go-aF50o"
"google-site-verification=zCVAh2LwmipcARJzgrOsfKwa1EInl8cOTTFQDeUSBxk"
"google-site-verification=oTtYzW83zP_41DlUrb_VXtAjLTW1p71RBmWR2g5ctrk"
"v=spf1 a mx include:_spf.google.com include:sendgrid.net include:servers.mcsv.net include:shops.shopify.com ~all"
"facebook-domain-verification=1xzy1qk89qs7ngxdt5e4s0kvvqw701"
"_globalsign-domain-verification=VzRovTWhxjedMqXFfoiZ-UNRnlnuTXYHgjKemPNt33"
"google-site-verification=UxVw159V9puXGvEI2bXj26vXxYpAuLeKQIdd34ZxJhc"
"google-site-verification=RCxAYvXUKM7ssPUkw0ye4xW51pN1G-ZNaaFiI2s5rdQ"
"apple-domain-verification=gBymLBYHWAhiurCH"

NS

2 record(s)

jill.ns.cloudflare.com.
josh.ns.cloudflare.com.

SOA

1 record(s)

jill.ns.cloudflare.com. dns.cloudflare.com. 2411539316 10000 2400 604800 1800

SPF

Configured

v=spf1 a mx include:_spf.google.com include:sendgrid.net include:servers.mcsv.net include:shops.shopify.com ~all

DMARC

Configured

v=DMARC1; p=reject; sp=reject; pct=100; rua=mailto:fb91c946140a4e15a5cb3d172f97ac81@dmarc-reports.cloudflare.net;

DKIM

Selector google

v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm1Hb9pGuC3udQCf5u+QiP1TTokFPdO42iPPnOz4aR/+Mmu/GojuVQJhvh7UQ2gqd9m6Lcyi3zP3GmxdpFwkFhOxxmqTHYZg6XJLusJ7zc4iqnlAbilo/gqeTlsAih7o9bWs4ImaGsHg7lq6LE8DAE4lBYLfQky1EasVVF2z4d752qFdcneAdBo1SW4lslgBnoT/gkDUnmJ7/11Y++w0sAtJEZIyEjdcO9jXEtROJdzD2r3Xw2f97wHrWq5MSB/e4MRm0M63Aokq9eK8AXz5Tfswx0HAyGSX7NlAMEAn0B+aR/3yQzcG0rXseU12OA7H3lBsLOicCW2S6/U2BWyKdOwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

DEV Community

Description

A space to discuss and keep up software development and manage your software career

Final URL

https://dev.to/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://dev.to/

Version

Server

Heroku

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

GlobalSign nv-sa

dev.to

Valid from

2025-11-10T16:06:31-06:00

Valid until

2026-12-12T16:06:30-06:00

Days remaining

125

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES128-GCM-SHA256

Security headers

4 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

—

X-Frame-OptionsNot detected

✓

Referrer PolicyImplemented

—

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

151.101.130.217, 151.101.194.217, 151.101.2.217, 151.101.66.217

73,68 ms

Cloudflare

1.1.1.1

151.101.130.217, 151.101.194.217, 151.101.2.217, 151.101.66.217

47,08 ms

Quad9

9.9.9.9

151.101.130.217, 151.101.194.217, 151.101.2.217, 151.101.66.217

43,15 ms

OpenDNS

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

smtp.google.com

Port 25: Closed/unreachable - 44 ms - 220 mx.google.com ESMTP 586e51a60fabf-459f1f6832csi5239586fac.147 - gsmtp
Port 465: Closed/unreachable - 4042.2 ms - 
Port 587: Closed/unreachable - 4015.8 ms -

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