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Total

DNS

Email

Security

Network

100

Availability

Domainnihon-u.ac.jp

IPv41

IPv61

MX records5

StatusActive

Domain technical report

日本大学

nihon-u.ac.jp

日本大学公式サイト：「自主創造 - 日本大学 Nihon University - あなたとともに100万人の仲間とともに」～　日本大学は、日本一教育力のある総合大学を目指し、それぞれが学ぶ領域や活動体験を生かして「自主創造」の気風に満ちた人材の育成に力を入れています。

Generated: 2026-08-10T21:56:55-05:00 · Cached result

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IPv41

IPv61

MX5

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 chain15 / 15 pts · Dns

DS and DNSKEY detected.

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

235 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: 173.124.95.34.bc.googleusercontent.com

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 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

1 record(s)

34.95.124.173

AAAA

1 record(s)

2600:1901:0:6a1c::

CNAME

0 record(s)

—

Not configured

MX

5 record(s)

10 alt3.aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
1 aspmx.l.google.com.
10 alt4.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.

TXT

5 record(s)

"adobe-idp-site-verification=9943308136e4952be2fa5562f529fe8fc038c09cacfe218a3d1c0f170a626b73"
"google-site-verification=e-V4-uT_BwYhj0snR1hbSySFe0APSRiPRgee1tQCMig"
"google-site-verification=M1YAiMi3sG_4pJbxFrChJ1B14_WOEQfhuVaXFgadxW8"
"v=spf1 ip4:133.43.0.0/16 ip6:2001:df6:8000::/48 include:_spf.google.com include:amazonses.com include:spf.securemx.jp include:spf.curumeru.jp include:_spf.activegate-ss.jp include:mail.ma-jin.jp include:spf.protection.outlook.com -all"
"apple-domain-verification=O0zzWzVYRObs4WF3"

NS

4 record(s)

dns-x.sinet.ad.jp.
ns007-zydu3gprqr7eyh2s.z.d-53.info.
ns007-zydu3gprqr7eyh2s.z.d-53.net.
ns007-zydu3gprqr7eyh2s.z.d-53.jp.

SOA

1 record(s)

ns.nihon-u.ac.jp. hostmaster.nihon-u.ac.jp. 2026073101 3600 900 604800 86400

CAA

0 record(s)

—

Not configured

DS

1 record(s)

22017 13 2 46146C70E3A015E07A7616D4ED63AD1B4BC7266F790F805EDCB8E85D 262699DF

DNSKEY

2 record(s)

257 3 13 /d1OyiB3tDmnxLlzoS0QZb4kcvG/lXR9hd/pXqpFPI/vj4ejdUdy09B+ xJm6g3qA2agBPdBAWghk9ImhSov61g==
256 3 13 txBkZEknNtjlN5rXhQ2uPAsgQ8GjgyQKGIgtXMxFUZYN3+G2JU4TM5uk RuW6q8kIhvyOMKEH/Wr5p9pknAcG/A==

RRSIG

5 record(s)

A 13 3 86400 20260830074525 20260730074525 34320 nihon-u.ac.jp. Dzz+lUcO1yVkD2mmSr0Uey+pbRGq5Y4HuDugvGPVg/R+MdHjfBFcP1Py WZFeJZFfViGYg6pU+eZR/DYsy2OSyw==
AAAA 13 3 86400 20260830074525 20260730074525 34320 nihon-u.ac.jp. VTRItYYs9BdzLWuYYSvVajUDJRMKp2GCNkZboVVIOuJhUqV5E44uTogu kzw4NEeN0tkFS2eYU82mV+VFtFHK6w==
DNSKEY 13 3 28800 20260830074525 20260730074525 22017 nihon-u.ac.jp. 98KGNBgTMPvls9djSXUx7uEG6Yo123XPfQZO1Th2ivdxRJUe/t0a+XXD hQySHQ5da0R5CGmCK2smRAr5z8NmtQ==
NS 13 3 86400 20260830074525 20260730074525 34320 nihon-u.ac.jp. r84kMU6ydbW1d9EAUMBUiVjToVEZJBtzzAfSip53b9mo3/h1szi/Zh2N 5y3qvMHEy/Jgpgp/A/MjP2crvdmoyA==
SOA 13 3 86400 20260830074525 20260730074525 34320 nihon-u.ac.jp. DMwcHTvvhUb1gn6hRssWrtjxlfV7uQ4Dy3IBEW16WdrHS+qtlglBfd3H +U0c7TmAeap1nFaM5QyR8/+IvZsoEA==

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 ip4:133.43.0.0/16 ip6:2001:df6:8000::/48 include:_spf.google.com include:amazonses.com include:spf.securemx.jp include:spf.curumeru.jp include:_spf.activegate-ss.jp include:mail.ma-jin.jp include:spf.protection.outlook.com -all

DMARC

Configured

v=DMARC1; p=quarantine; sp=none; rua=mailto:postmaster+rua@nihon-u.ac.jp; ruf=mailto:postmaster+ruf@nihon-u.ac.jp;

DKIM

Selector google

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAj5UUoVqNoAylnv2k8gwGywyHG9hFvtwDfCgijvcNe5/nXSwRdUU7tFL665r3Xqlc6SRjoR5P+jJVrVqxrxmzsArIxhavEINebiEKrzGCnuUaVh7iTAXmqcEZn48GkcxgUtd6Exz2Pgbaxh3KuBRG+gNJk2h/AVTrWZbYY4QgS7Phz2KeokpsRI33fi27cPKV/TNmhvTUpaU2XWf7GTOkO7OokMAx7bwywMkE+FC2P3qilyfTkJRnCa+OvMZTntV4Q67rCD9ZXG+ad5FN5k+vywpJOZuomL8thghNEcRmE4tZvVihfnUMGgTM6Tl0pd2lDWzzdZ4pIm9m8bcahHpvYQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

日本大学

Description

Final URL

https://www.nihon-u.ac.jp/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.nihon-u.ac.jp/

Version

Server

nginx/1.24.0 (Ubuntu)

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

SECOM Trust Systems Co., Ltd.

www.nihon-u.ac.jp

Valid from

2026-03-03T02:05:04-06:00

Valid until

2027-04-03T03:05:04-05:00

Days remaining

235

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

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

34.95.124.173

187,34 ms

Cloudflare

1.1.1.1

34.95.124.173

77,19 ms

Quad9

9.9.9.9

34.95.124.173

50,04 ms

OpenDNS

208.67.222.222

34.95.124.173

542,36 ms

AdGuard

94.140.14.14

34.95.124.173

66,85 ms

IP, geolocation and ASNAssociated network information

34.95.124.173

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

alt3.aspmx.l.google.com

Port 25: Closed/unreachable - 0.7 ms - 
Port 465: Closed/unreachable - 4020.7 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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