`mail2.pocketstudio.jp`

DNSSEC	⚠️ Not signed
A	153.121.40.37^{🇯🇵 SAKURA-B153.121.32.0/19 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan}
		PTR	`sakura1.pocketstudio.net`

`pocketstudio.jp`

	DNSSEC	⚠️ Not signed
	A	153.121.40.37^{🇯🇵 SAKURA-B153.121.32.0/19 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan}
	NS	`sakura1.pocketstudio.net` ⭐
	NS	`sakura3.pocketstudio.net`
	MX	`mail2.pocketstudio.jp` ⭐
	TXT	`v=spf1 a mx ptr +ip4:210.239.46.254 mx:sv.pocketstudio.jp ip4:210.128.158.225...`
	SOA	`sakura1.pocketstudio.net`postmaster@pocketstudio.jp 2015-01-08 #1

MX for

pocketstudio.jp

sv.pocketstudio.jp

Same first word

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DNS History

1 record (1 active, 0 former)

●A153.121.40.372015-08-21 → 2026-04-24 · 2 obs

● 2015-08-21 01:50:08
● 2026-04-24 23:31:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
pocketstudio.jp	sakura1.pocketstudio.net, sakura3.pocketstudio.net	-

✅ Authoritative Response

Server:153.121.40.37

NS records: sakura1.pocketstudio.net, sakura3.pocketstudio.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pocketstudio.jp (unsigned zone)

⏱️ Timing

Total: 1299ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.121.40.37`

Analysis

Mail Server Role

mail2.pocketstudio.jp serves as the mail server for pocketstudio.jp and sv.pocketstudio.jp.

IP Addresses

mail2.pocketstudio.jp resolves to a single IP: 153.121.40.37.

Other host names, for instance ns.cloudcomputing.jp, ns.spten.jp, linux4u.jp, pocketstudio.jp and ns.icqdojo.jp share IP numbers with mail2.pocketstudio.jp.

mail2.pocketstudio.jp - robtex.com