`mail.customworld.jp`

	DNSSEC	⚠️ Not signed
	A	61.195.161.13^{🇯🇵 IDC61.195.160.0/23 Frontier Inc.}

`customworld.jp`

	DNSSEC	⚠️ Not signed
	NS	`customworld.jp` ⭐
	NS	`dns01.muumuu-domain.com`
	NS	`dns02.muumuu-domain.com`
	MX	`customworld-jp.mail.protection.outlook.com` ⭐
	MX	`test.customworld.jp`⁽¹⁰⁰⁾
	TXT	`v=spf1 ip4:112.78.125.24 include:spf.protection.outlook.com include:spf.bmv.j...`
	TXT	`MS=ms61189077`
	SOA	`customworld.jp`postmaster@customworld.jp serial=1762490303

Previously MX for

customworld.jp

Same first word

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DNS History

1 record (1 active, 0 former)

●A61.195.161.132015-06-27 → 2026-04-13 · 2 obs

● 2015-06-27 19:37:16
● 2026-04-13 04:33:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
customworld.jp	dns01.muumuu-domain.com, dns02.muumuu-domain.com	-

✅ 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 customworld.jp (unsigned zone)

⏱️ Timing

Total: 1437ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`61.195.161.13`

Analysis

IP Addresses

mail.customworld.jp resolves to one IP number: 61.195.161.13.

Other host names, for instance ns2.customworld.jp, share IP numbers with mail.customworld.jp.

mail.customworld.jp - robtex.com