`mail.web-exercise.jp`

	CNAME	`www.web-exercise.jp`
	DNSSEC	⚠️ Not signed
	A	219.99.180.98^{🇯🇵 QIC219.99.176.0/20 Kyuden Infocom Company Inc}

`web-exercise.jp`

	DNSSEC	⚠️ Not signed
	A	219.99.180.98^{🇯🇵 QIC219.99.176.0/20 Kyuden Infocom Company Inc}
	NS	`dns01.muumuu-domain.com` ⭐
	NS	`dns02.muumuu-domain.com`
	SOA	`dns01.muumuu-domain.com`postmaster@web-exercise.jp serial=1550625740

Previously MX for

web-exercise.jp

Same first word

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DNS History

2 records (1 active, 1 former)

○A219.99.180.982015-05-08 → 2016-09-24 · 4 obs

● 2015-05-08 04:40:54
● 2016-09-24 08:08:26
○ 2026-04-20 17:37:38
○ 2026-04-20 17:37:40

●CNAMEwww.web-exercise.jp2015-05-08 → 2026-04-20 · 2 obs

● 2015-05-08 04:40:54
● 2026-04-20 17:37:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...	-
web-exercise.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 web-exercise.jp (unsigned zone)

⏱️ Timing

Total: 1525ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`www.web-exercise.jp`

Analysis

IP Addresses

mail.web-exercise.jp points to a single IP: 219.99.180.98.

Other host names such as web-exercise.jp and www.web-exercise.jp share IP numbers with mail.web-exercise.jp.

mail.web-exercise.jp - robtex.com