`mail.mby.jp`

DNSSEC	⚠️ Not signed
A	103.15.185.18^{🇯🇵 VECTANT103.15.184.0/22 Green Net Co. Ltd.}
		PTR	`mail.mby.jp`

`mby.jp`

	DNSSEC	⚠️ Not signed
	NS	`ns01.mcg.jp` ⭐
	NS	`ns.mcg.jp`
	NS	`ns02.mcg.jp`
	MX	`mail.mby.jp` ⭐
	TXT	`google-site-verification=SRJfc6ULx7PIKL1yvrySoDwVlfDvnp8zG4HOiqo9GUA`
	TXT	`v=spf1 +ip4:103.15.185.18 ~all`
	SOA	`ns.mcg.jp`domain@mcg.jp 2025-11-13 #3

PTR for

18.185.15.103.in-addr.arpa

MX for

mby.jp

Same first word

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mail.be

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DNS History

1 record (1 active, 0 former)

●A103.15.185.182026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 16:19:46
● 2026-05-11 21:33:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
mby.jp	ns02.mcg.jp, ns01.mcg.jp	2 records

✅ Authoritative Response

Server:103.15.185.18

NS records: ns02.mcg.jp, ns01.mcg.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mby.jp (unsigned zone)

⏱️ Timing

Total: 745ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.15.185.18`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns01.mcg.jp, ns02.mcg.jp)

Analysis

Mail Server Role

mail.mby.jp is the mail server for mby.jp.

IP Addresses

mail.mby.jp maps to IP address 103.15.185.18.

Other host names, for instance ns.mcg.jp, dms.jp, 103x15x185x18.mcg.jp, mail.meishin2005.com and mail.feelssoft.jp share IP numbers with mail.mby.jp.

mail.mby.jp - robtex.com

mail.mby.jp

mby.jp