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Total

DNS

Email

Security

Network

100

Availability

Domaina8.net

IPv42

IPv60

MX records2

StatusActive

Domain technical report

アフィリエイトのA8.net

a8.net

A8.netは、PC・スマートフォン対応アフィリエイトサービスで広告主数約27,000社・アフィリエイトサイト数360万サイトに支持され、初心者でも簡単に副収入を得ることが可能な日本最大級の成果報酬型インターネット広告です。

Generated: 2026-08-09T04:10:34-05:00 · Cached result

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IPv42

IPv60

MX2

NS4

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

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 propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

2 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

137 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: ec2-57-182-90-104.ap-northeast-1.compute.amazonaws.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/1.1 200 OK

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)

57.182.90.104
54.178.89.24

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

20 email02.a8.net.
20 email01.a8.net.

TXT

4 record(s)

"google-site-verification=FwhFuAN7kOp7P_7eK82-QwR6pisnKzwmsMOMFfA4YhQ"
"google-site-verification=aIya9pcarzUOFWIFSuisiIuJ4HlEQH9Ue8EKThcKMUU"
"v=spf1 +ip4:122.208.93.80/28 +ip4:27.96.52.96/28 +ip4:122.50.111.0/24 +ip4:203.190.224.0/24 +ip4:61.213.8.0/25 " "include:mdvalencia.maildealer.jp include:spf.curumeru.jp include:fc4210.cuenote.jp include:fc3193.cuenote.jp include:spf.a8.net include:7268286.spf07.hubspotemail.net ~all"
"google-site-verification=TziKcyUjqITSUGcXx6d8JebnKkI9YQ0q-pnvVr1tgqE"

NS

4 record(s)

ns-124.awsdns-15.com.
ns-1261.awsdns-29.org.
ns-888.awsdns-47.net.
ns-2044.awsdns-63.co.uk.

SOA

1 record(s)

ns-124.awsdns-15.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

SPF

Configured

v=spf1 +ip4:122.208.93.80/28 +ip4:27.96.52.96/28 +ip4:122.50.111.0/24 +ip4:203.190.224.0/24 +ip4:61.213.8.0/25 include:mdvalencia.maildealer.jp include:spf.curumeru.jp include:fc4210.cuenote.jp include:fc3193.cuenote.jp include:spf.a8.net include:7268286.spf07.hubspotemail.net ~all

DMARC

Configured

v=DMARC1; p=none;

DKIM

Not found

—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

アフィリエイトのA8.net

Description

Final URL

https://www.a8.net:443/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://www.a8.net:443/

Version

Server

nginx

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

GlobalSign nv-sa

*.a8.net

Valid from

2026-06-08T22:56:21-05:00

Valid until

2026-12-24T21:56:21-06:00

Days remaining

137

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES128-GCM-SHA256

Security headers

2 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

—

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

54.178.89.24, 57.182.90.104

63,68 ms

Cloudflare

1.1.1.1

54.178.89.24, 57.182.90.104

52,69 ms

Quad9

9.9.9.9

54.178.89.24, 57.182.90.104

51,21 ms

OpenDNS

208.67.222.222

54.178.89.24, 57.182.90.104

74,63 ms

AdGuard

94.140.14.14

0.0.0.0

67,18 ms

IP, geolocation and ASNAssociated network information

57.182.90.104

No data

success

country

region

city

asn

organization

isp

54.178.89.24

No data

success

country

region

city

asn

organization

isp

Visitor information

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

email02.a8.net

Port 25: Closed/unreachable - 8.4 ms - 
Port 465: Closed/unreachable - 4026.7 ms - 
Port 587: Closed/unreachable - 4020.7 ms -

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