`mail.tas21.jp`

DNSSEC	⚠️ Not signed
A	210.140.68.119^{🇯🇵 IDC210.140.64.0/19 Frontier Inc.}
		PTR	`mail.tas21.jp`

`tas21.jp`

	DNSSEC	⚠️ Not signed
	A	210.140.68.119^{🇯🇵 IDC210.140.64.0/19 Frontier Inc.}
	NS	`ns01.idcfcloud.com` ⭐
	NS	`ns02.idcfcloud.com`
	NS	`ns03.idcfcloud.com`
	MX	`mail.tas21.jp` ⭐
	TXT	`v=spf1 include:_spf.tas21.jp ~all`
	SOA	`ns01.idcfcloud.com`postmaster@tas21.jp serial=54

WOT: SAFE (61/100)
📈 Tranco rank: #894,705

PTR for

119.68.140.210.in-addr.arpa

MX for

tas21.jp

Same first word

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DNS History

1 record (1 active, 0 former)

●A210.140.68.1192020-02-13 → 2026-07-18 · 2 obs

● 2020-02-13 21:11:08
● 2026-07-18 02:26:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
tas21.jp	ns03.idcfcloud.com, ns02.idcfcloud.com, ns01.idcfcloud.com	-

✅ Authoritative Response

Server:211.10.28.207

NS records: ns03.idcfcloud.com, ns02.idcfcloud.com, ns01.idcfcloud.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tas21.jp (unsigned zone)

⏱️ Timing

Total: 1343ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.140.68.119`

Analysis

Mail Server Role

mail.tas21.jp is a mail server for tas21.jp.

IP Addresses

mail.tas21.jp directs to one IP number, which is 210.140.68.119.

There are other host names — tas21.jp among them — that share IP numbers with mail.tas21.jp.

mail.tas21.jp - robtex.com

mail.tas21.jp

tas21.jp