`ns.sdev.jp`

	DNSSEC	⚠️ Not signed
	A	210.238.249.42^{🇯🇵 KDDI210.238.128.0/17}

`sdev.jp`

	DNSSEC	⚠️ Not signed
	NS	`ns.sdev.jp` ⭐
	NS	`dns4.dion.ne.jp`
	MX	`ns.sdev.jp` ⭐
	MX	`mx01.sdev.jp`⁽⁵⁰⁾
	SOA	`ns.sdev.jp`root@sdev.jp 2010-04-07 #1

NS for

sdev.jp

MX for

sdev.jp

Same first word

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DNS History

1 record (1 active, 0 former)

●A210.238.249.422015-04-29 → 2026-05-09 · 2 obs

● 2015-04-29 21:45:06
● 2026-05-09 19:36:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
sdev.jp	ns.sdev.jp, dns4.dion.ne.jp	1 record

✅ Authoritative Response

Server:210.238.249.42

NS records: ns.sdev.jp, dns4.dion.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sdev.jp (unsigned zone)

⏱️ Timing

Total: 1513ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.238.249.42`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (ns.sdev.jp)

Analysis

Name Server Role

ns.sdev.jp serves as the name server for sdev.jp.

dns4.dion.ne.jp commonly serves as a name server together with ns.sdev.jp.

Mail Server Role

ns.sdev.jp serves as a mail server for sdev.jp.

mx01.sdev.jp is commonly used as a mail server alongside ns.sdev.jp.

IP Addresses

ns.sdev.jp resolves to one IP number: 210.238.249.42.

ns.sdev.jp - robtex.com

ns.sdev.jp

sdev.jp