`mail.risuron.co.jp`

DNSSEC	⚠️ Not signed
A	210.154.235.43^{🇯🇵 OCN210.154.0.0/16 (AS4713) CIDR BLOCK 5 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
		PTR	`risuron.co.jp`

`risuron.co.jp`

	DNSSEC	⚠️ Not signed
	A	210.154.235.43^{🇯🇵 OCN210.154.0.0/16 (AS4713) CIDR BLOCK 5 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
	NS	`asns1.customer.ne.jp` ⭐
	NS	`asns2.customer.ne.jp`
	MX	`mwbgw1.ocn.ad.jp` ⭐
	MX	`mwbgw2.ocn.ad.jp`⁽²⁰⁾
	TXT	`v=spf1 a mx include:_spf.bizmw.com ~all`
	SOA	`asns1.customer.ne.jp`tsukamoto@risuron.co.jp serial=1970010155

WOT: SAFE (61/100)

Previously MX for

risuron.co.jp

mail.risuron.co.jp

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DNS History

6 records (1 active, 5 former)

○MXmail.risuron.co.jp2009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 04:23:14
○ 2016-12-29 15:09:32
○ 2026-05-10 12:51:18

○MXmx1.firstserver.ne.jp2009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 04:23:14
○ 2016-12-29 15:09:32
○ 2026-05-10 12:51:18

○MXmx2.firstserver.ne.jp2009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 04:23:14
○ 2016-12-29 15:09:32
○ 2026-05-10 12:51:18

○A122.28.61.452016-12-29 → 2016-12-29 · 4 obs

○ 2009-01-12 04:23:14
● 2016-12-29 15:09:32
○ 2026-04-10 11:50:30
○ 2026-05-10 12:51:18

○A203.183.60.372009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 04:23:14
○ 2016-12-29 15:09:32
○ 2026-05-10 12:51:18

●A210.154.235.432026-04-10 → 2026-05-10 · 3 obs

○ 2016-12-29 15:09:32
● 2026-04-10 11:50:30
● 2026-05-10 12:51:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	g.dns.jp, d.dns.jp, c.dns.jp, a.dns.jp...	-
risuron.co.jp	asns2.customer.ne.jp, asns1.customer.ne.jp	-

✅ Authoritative Response

Server:210.150.254.94

NS records: asns2.customer.ne.jp, asns1.customer.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for risuron.co.jp (unsigned zone)

⏱️ Timing

Total: 1657ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.154.235.43`

Analysis

IP Addresses

mail.risuron.co.jp points to a single IP number: 210.154.235.43.

Other host names, for instance risuron.co.jp, share IP numbers with mail.risuron.co.jp.

mail.risuron.co.jp - robtex.com