fourin.com - dns.ninja

`fourin.com`

DNSSEC	⚠️ Not signed
A	133.167.74.175^{🇯🇵 SAKURA-C133.167.0.0/16 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan}
		PTR	`os3-367-16671.vs.sakura.ne.jp`
NS	`skydns99.otsuka-office365.jp` ⭐
		A	157.205.203.139^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`skymst11.otsuka-office365.jp`
NS	`skydns11.otsuka-office365.jp`
		A	157.205.203.141^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`skydns11.otsuka-office365.jp`
NS	`skydns12.otsuka-office365.jp`
		A	157.205.160.35^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`skydns12.otsuka-office365.jp`
NS	`skydns13.otsuka-office365.jp`
		A	157.205.160.51^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`skydns13.otsuka-office365.jp`
MX	`fourin-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc1a::2^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tyvp286cu00302.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::3^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tyvp286cu00203.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os9p286cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::1^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os0p286cu01201.inbound.protection.outlook.com`
		A	52.101.124.1^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ty3p286cu00101.inbound.protection.outlook.com`
		A	52.101.124.6^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tyvp286cu00206.inbound.protection.outlook.com`
		A	52.101.157.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os0p286cu01302.inbound.protection.outlook.com`
		A	52.101.157.40^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os9p286cu00100.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.bmv.jp include:spf.protection.outlook.com ip4:133.167.39.1...`
SOA	`skydns99.otsuka-office365.jp`hostmaster@otsuka-office365.jp 2025-12-17 #1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1783079616

WOT: SAFE (60/100)

Subdomains

mail.fourin.com

Same first word

fourin.jp

fourin.com

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DNS History

14 records (6 active, 8 former)

○NSns.fourin.com2015-06-30 → 2017-03-13 · 5 obs

○ 2007-10-23 13:04:14
● 2015-06-30 14:43:38
● 2017-03-13 06:44:44
○ 2026-02-21 03:41:58
○ 2026-07-03 11:54:24

○NSns1.akira.ne.jp2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:04:14
○ 2015-06-30 14:43:38
○ 2026-07-03 11:54:24

○NSns2.akira.ne.jp2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:04:14
○ 2015-06-30 14:43:38
○ 2026-07-03 11:54:24

○NSnsx.clara.co.jp2015-06-30 → 2017-03-13 · 5 obs

○ 2007-10-23 13:04:14
● 2015-06-30 14:43:38
● 2017-03-13 06:44:44
○ 2026-02-21 03:41:58
○ 2026-07-03 11:54:24

●NSskydns11.otsuka-office365.jp2026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

●NSskydns12.otsuka-office365.jp2026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

●NSskydns13.otsuka-office365.jp2026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

●NSskydns99.otsuka-office365.jp2026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

●MXfourin-com.mail.protection.outlook.com2026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

○MXmail.fourin.com2015-06-30 → 2017-03-13 · 5 obs

○ 2007-10-23 13:04:14
● 2015-06-30 14:43:38
● 2017-03-13 06:44:44
○ 2026-02-21 03:41:58
○ 2026-07-03 11:54:24

○MXns2.akira.ne.jp2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:04:14
○ 2015-06-30 14:43:38
○ 2026-07-03 11:54:24

○A119.18.220.532015-06-30 → 2017-03-13 · 5 obs

○ 2007-10-23 13:04:14
● 2015-06-30 14:43:38
● 2017-03-13 06:44:44
○ 2026-02-21 03:41:58
○ 2026-07-03 11:54:24

●A133.167.74.1752026-02-21 → 2026-07-03 · 3 obs

○ 2017-03-13 06:44:44
● 2026-02-21 03:41:58
● 2026-07-03 11:54:24

○A61.196.224.142007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:04:14
○ 2015-06-30 14:43:38
○ 2026-07-03 11:54:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
fourin.com	skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp	-

✅ Authoritative Response

Server:157.205.160.51

NS records: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fourin.com (unsigned zone)

⏱️ Timing

Total: 1016ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`133.167.74.175`
NS	3	`skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp...`
MX	1	`fourin-com.mail.protection.outlook.com (`
TXT	1	`v=spf1 include:spf.bmv.jp include:spf.pr`
SOA	1	`skydns99.otsuka-office365.jp hostmaster.`

Analysis

Hierarchy

fourin.com is a parent domain of mail.fourin.com.

IP Addresses

fourin.com resolves to one IP address: 133.167.74.175.

os3-367-16671.vs.sakura.ne.jp, fourin.jp and www.fourin.jp are examples of other host names that share IP numbers with fourin.com.

Name Servers

The authoritative name servers for fourin.com are skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp and skydns99.otsuka-office365.jp.

fourin.com shares at least some of its name servers with other domains, including nextcontact.co.jp, nanwa.co.jp, gome.co.jp and two others.

Each of the four hosts skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp and skydns99.otsuka-office365.jp points to a single IP address — skydns11.otsuka-office365.jp points to 157.205.203.141, skydns12.otsuka-office365.jp points to 157.205.160.35, skydns13.otsuka-office365.jp points to 157.205.160.51 and skydns99.otsuka-office365.jp points to 157.205.203.139.

Mail Servers

Mail for fourin.com is handled by a single mail server, fourin-com.mail.protection.outlook.com.

fourin-com.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.124.1, 52.101.124.6, 52.101.157.10 and 5 others.