`ryonan-seikotsuin.com`

DNSSEC	⚠️ Not signed
A	202.254.236.42^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
		PTR	`sv5041.xserver.jp`
NS	`ryonan-seikotsuin.com` ⭐
		A	202.254.236.42^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
			PTR	`sv5041.xserver.jp`
NS	`dns01.muumuu-domain.com`
		A	202.239.23.39^{🇯🇵 IDC202.239.23.0/24 Frontier Inc.}
NS	`dns02.muumuu-domain.com`
		A	160.251.249.62^{🇯🇵 GMOOSK-NET160.251.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
MX	`ryonan.sakura.ne.jp` ⭐
		A	49.212.180.240^{🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www2800.sakura.ne.jp`
TXT	`v=spf1 a:www2800.sakura.ne.jp mx +ip4:202.254.236.42 ~all`
SOA	`ryonan-seikotsuin.com`postmaster@ryonan-seikotsuin.com serial=1730097546

`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=1777080886

NS for

ryonan-seikotsuin.com

Previously MX for

ryonan-seikotsuin.com

Same first word

ryonan-seikotsuin.com

DNS History

10 records (5 active, 5 former)

●NSdns01.muumuu-domain.com2020-02-17 → 2026-04-25 · 3 obs

○ 2017-03-26 02:04:36
● 2020-02-17 11:59:22
● 2026-04-25 01:54:44

●NSdns02.muumuu-domain.com2020-02-17 → 2026-04-25 · 3 obs

○ 2017-03-26 02:04:36
● 2020-02-17 11:59:22
● 2026-04-25 01:54:44

○NSns.namedserver.net2015-08-17 → 2017-03-26 · 4 obs

● 2015-08-17 04:35:30
● 2017-03-26 02:04:36
○ 2020-02-17 11:59:22
○ 2026-04-25 01:54:44

○NSns2.namedserver.net2015-08-17 → 2017-03-26 · 4 obs

● 2015-08-17 04:35:30
● 2017-03-26 02:04:36
○ 2020-02-17 11:59:22
○ 2026-04-25 01:54:44

●NSryonan-seikotsuin.com2020-02-17 → 2026-04-25 · 3 obs

○ 2017-03-26 02:04:36
● 2020-02-17 11:59:22
● 2026-04-25 01:54:44

○MXmail.ryonan-seikotsuin.com2015-08-17 → 2015-08-17 · 3 obs

● 2015-08-17 04:35:30
○ 2015-12-02 03:15:28
○ 2026-04-25 01:54:44

○MXryonan-seikotsuin.com2015-08-17 → 2015-08-17 · 3 obs

● 2015-08-17 04:35:30
○ 2015-12-02 03:15:28
○ 2026-04-25 01:54:44

●MXryonan.sakura.ne.jp2015-12-02 → 2026-04-25 · 3 obs

○ 2015-08-17 04:35:30
● 2015-12-02 03:15:28
● 2026-04-25 01:54:44

○A180.222.180.1512015-08-17 → 2017-03-26 · 4 obs

● 2015-08-17 04:35:30
● 2017-03-26 02:04:36
○ 2020-02-17 11:59:22
○ 2026-04-25 01:54:44

●A202.254.236.422020-02-17 → 2026-04-25 · 3 obs

○ 2017-03-26 02:04:36
● 2020-02-17 11:59:22
● 2026-04-25 01:54:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ryonan-seikotsuin.com	dns01.muumuu-domain.com, dns02.muumuu-domain.com	2 records

✅ Authoritative Response

Server:202.239.23.39

NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ryonan-seikotsuin.com (unsigned zone)

⏱️ Timing

Total: 461ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.254.236.42`
NS	2	`dns02.muumuu-domain.com, dns01.muumuu-domain.com`
MX	1	`ryonan.sakura.ne.jp (pri: 100)`
TXT	1	`v=spf1 a:www2800.sakura.ne.jp mx +ip4:20`
SOA	1	`ryonan-seikotsuin.com postmaster.ryonan-`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns01.muumuu-domain.com, dns02.muumuu-domain.com)

Analysis

Name Server Role

ryonan-seikotsuin.com serves as a name server for ryonan-seikotsuin.com.

dns01.muumuu-domain.com and dns02.muumuu-domain.com are commonly used as name servers together with ryonan-seikotsuin.com.

IP Addresses

ryonan-seikotsuin.com maps to IP address 202.254.236.42.

Other host names, for instance wisest.jp, iinet.jp, sv5041.xserver.jp, bh-academy.jp and s-yosuke.com share IP numbers with ryonan-seikotsuin.com.

Name Servers

ryonan-seikotsuin.com is delegated to three name servers: ryonan-seikotsuin.com, dns01.muumuu-domain.com and dns02.muumuu-domain.com.

ryonan-seikotsuin.com at least partially shares name servers with other domains such as ugk.jp, edenhall-inc.com, akkanbeh.com, alive-project.com and coni-coni.com.

Host names with a single IP:

ryonan-seikotsuin.com points to 202.254.236.42

dns01.muumuu-domain.com points to 202.239.23.39

dns02.muumuu-domain.com points to 160.251.249.62

Mail Servers

ryonan-seikotsuin.com is handled by a single mail server, ryonan.sakura.ne.jp.

The mail server setup for ryonan-seikotsuin.com matches that of other domains, for instance ryonan.sakura.ne.jp.

ryonan.sakura.ne.jp points to one IP number: 49.212.180.240.

ryonan-seikotsuin.com - robtex.com