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66
Total
75
DNS
50
Email
65
Security
85
Network
60
Availability
Domainhtml5rocks.com
IPv41
IPv61
MX records0
StatusActive
Domain technical report

web.dev

html5rocks.com

Guidance to build modern web experiences that work on any browser.

Generated: 2026-08-10T07:38:27-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv61
MX0
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 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 policy5 / 5 pts · Dns

Certificate authority restriction.

!
DNS propagation0 / 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

67 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: pnorda-ar-in-f19.1e100.net

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

!
HTTP response0 / 40 pts · Availability

HTTP/2 405

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
142.250.188.179

AAAA

1 record(s)
2607:f8b0:4009:81c::2013

CNAME

0 record(s)
—

Not configured

MX

0 record(s)
—

Not configured

TXT

2 record(s)
"v=spf1 -all"
"google-site-verification=tTsESpe5KAbzERVPsyItkkjO3nYVxQGJqWu2MQczRtY"

NS

4 record(s)
ns4.google.com.
ns2.google.com.
ns3.google.com.
ns1.google.com.

SOA

1 record(s)
ns1.google.com. dns-admin.google.com. 961687306 900 900 1800 60

CAA

1 record(s)
0 issue "pki.goog"

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; rua=mailto:mailauth-reports@google.com

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
web.dev
Description
Guidance to build modern web experiences that work on any browser.
Final URL
https://web.dev/
HTTP status
200

HTTP

Status
HTTP/2 405
Final URL
https://html5rocks.com/
Version
3
Server
Google Frontend
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
html5rocks.com
Valid from
2026-07-19T02:33:50-05:00
Valid until
2026-10-17T03:23:42-05:00
Days remaining
67
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

0 active
—
HSTSNot detected
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
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

Review
!
Differences detected

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
142.251.41.83
75,02 ms
Cloudflare
1.1.1.1
173.194.209.121
103,07 ms
Quad9
9.9.9.9
142.251.210.115
64,24 ms
OpenDNS
208.67.222.222
142.251.41.83
60,61 ms
AdGuard
94.140.14.14
142.250.177.83
172,37 ms

IP, geolocation and ASNAssociated network information

142.250.188.179

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

html5rocks.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4017.6 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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