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81
Total
80
DNS
90
Email
96
Security
70
Network
60
Availability
Domainhackernoon.com
IPv43
IPv63
MX records5
StatusActive
Domain technical report

HackerNoon - read, write and learn about any technology

hackernoon.com

How hackers start their afternoon. HackerNoon is a free platform with 25k+ contributing writers. 100M+ humans have visited HackerNoon to learn about technology

Generated: 2026-08-08T22:37:25-05:00 · Cached result

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IPv43
IPv63
MX5
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

3 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

3 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

5 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

76 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers31 / 35 pts · Security

8 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 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

!
HTTP response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

3 record(s)
104.26.7.38
104.26.6.38
172.67.71.52

AAAA

3 record(s)
2606:4700:20::681a:626
2606:4700:20::ac43:4734
2606:4700:20::681a:726

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
10 alt3.aspmx.l.google.com.
1 aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.

TXT

15 record(s)
"v=spf1 include:_spf.elasticemail.com include:mailgun.org include:google.com ~all"
"google-site-verification=UfqnQyZvvDmOON1yQuOZMfUuM21cLmV7aQpxCvgxrt4"
"oogle-site-verification=L05iH9IcHzlJOVqwqO9_ey4GyLkQuFYNJFZx0981uzU"
"google-site-verification=sUrVo6yL4KZutqwkH8Z7sKa90WL3nfC0dQnZ0oHOGMQ"
"google-site-verification=n6eghnywkeXvjG7fg4qNnqKCQHeGe0xEKm4w4bnrfSo"
"google-site-verification=MyIgILJ2cXXJDA0kx1_45SjwofgkTWyaSk66w8lTwy0"
"_a98ocn0et97geuh0m89jzlvzaithp7r"
"google-site-verification=F0i3VQ3IJaVJrc3xZSht0HiCB8V3Ex7PgFlGrRVf1RU"
"google-site-verification=vf402pQd7CrurhiTJGwvX-GWi6oxjPk4UImos33JGbU"
"facebook-domain-verification=5j1nypnwc4gm15smdd5kgavl7e5vet"
"google-site-verification=cPes9_Ves7bHC7FfGrffokkXKfcWT2uj8tSggmcqHKw"
"google-site-verification=HjYAgK8epiMtfFdXbIMPc06DlKYY2TLMkNKHdk0cQOg"
"google-site-verification=7aqV-Wg-4b7XP6nZ-1fJgy99deMYt25IGmNMgNkyh-g"
"firebase=hackernoon-app"
"google-site-verification=DjivKoJC5rhQ6SCnkaz7UNujzmfYiLDPj4MItcKTf-I"

NS

2 record(s)
amber.ns.cloudflare.com.
guy.ns.cloudflare.com.

SOA

1 record(s)
amber.ns.cloudflare.com. dns.cloudflare.com. 2410585390 10000 2400 604800 1800

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 include:_spf.elasticemail.com include:mailgun.org include:google.com ~all

DMARC

Configured
v=DMARC1; p=quarantine; rua=mailto:521620dfcb1f4e698016f1b579a5efd1@dmarc-reports.cloudflare.net;

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhOZ6M6lzqZk48q8wUcUR5FrEwZfMBlglI7SDne3HTo0j4SafWmA0zXl2SudLghdR6pHtV1qdZSRBtpSCIGViRhSCobEmS0NCVHwSALTqXpaVHKfpVD1GlUB9FVauFJX8WFxCCCNs+k/5DROmrKzJoDZz6Tsuh0chKXhVNk9VUjmpgyfoxeKiLe23YFE/3iKO3 xe1m6z0JNby3BDX29hZ64kmEk9lXt7RaPnsyHkY6If4t+DJ4JesK5QDQeXh5r02xUrTh7Wh5s84vLCXJ2uCAFqmDdCJR+inmbIPCKBHdQTlQspCHd/eUKijPSkcYE7wH/3T2zW9+E2j5UENKXkNJQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
HackerNoon - read, write and learn about any technology
Description
How hackers start their afternoon. HackerNoon is a free platform with 25k+ contributing writers. 100M+ humans have visited HackerNoon to learn about technology
Final URL
https://hackernoon.com/
HTTP status
200

HTTP

Status
HTTP/2 403
Final URL
https://hackernoon.com/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
hackernoon.com
Valid from
2026-07-26T15:01:10-05:00
Valid until
2026-10-24T16:01:06-05:00
Days remaining
76
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

8 active
—
HSTSNot detected
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
104.26.6.38, 104.26.7.38, 172.67.71.52
62,58 ms
Cloudflare
1.1.1.1
104.26.6.38, 104.26.7.38, 172.67.71.52
19,02 ms
Quad9
9.9.9.9
104.26.6.38, 104.26.7.38, 172.67.71.52
25,40 ms
OpenDNS
208.67.222.222
104.26.6.38, 104.26.7.38, 172.67.71.52
85,87 ms
AdGuard
94.140.14.14
104.26.6.38, 104.26.7.38, 172.67.71.52
68,59 ms

IP, geolocation and ASNAssociated network information

104.26.7.38

No data
success
No
country
region
city
asn
organization
isp

104.26.6.38

No data
success
No
country
region
city
asn
organization
isp

172.67.71.52

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

alt3.aspmx.l.google.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4015.6 ms - 
Port 587: Closed/unreachable - 4020.8 ms -

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