`mail.yet.jp`

	DNSSEC	⚠️ Not signed
	A	210.140.108.81^{🇯🇵 IDC210.140.96.0/19 Frontier Inc.}

`yet.jp`

	DNSSEC	⚠️ Not signed
	A	210.140.108.81^{🇯🇵 IDC210.140.96.0/19 Frontier Inc.}
	NS	`dns4.tsukuba.ad.jp` ⭐
	NS	`dns5.tsukuba.ad.jp`
	MX	`mail.yet.jp` ⭐
	MX	`mail.tsukuba.co.jp`⁽²⁰⁾
	SOA	`dns4.tsukuba.ad.jp`hostmaster@tsukuba.ad.jp 2017-04-19 #1

MX for

yet.jp

Same first word

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DNS History

1 record (1 active, 0 former)

●A210.140.108.812026-03-16 → 2026-03-23 · 2 obs

● 2026-03-16 19:00:28
● 2026-03-23 22:59:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	b.dns.jp, g.dns.jp, f.dns.jp, c.dns.jp...	-
yet.jp	dns4.tsukuba.ad.jp, dns5.tsukuba.ad.jp	2 records

✅ Authoritative Response

Server:153.122.2.46

NS records: dns4.tsukuba.ad.jp, dns5.tsukuba.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yet.jp (unsigned zone)

⏱️ Timing

Total: 889ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.140.108.81`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns5.tsukuba.ad.jp, dns4.tsukuba.ad.jp)

Analysis

Mail Server Role

mail.yet.jp serves as the mail server for yet.jp.

Together with mail.yet.jp, mail.tsukuba.co.jp is commonly used as a mail server.

IP Addresses

mail.yet.jp resolves to a single IP: 210.140.108.81.

Other host names, for instance, yet.jp and sv.yet.jp share IP numbers with mail.yet.jp.

mail.yet.jp - robtex.com

mail.yet.jp

yet.jp