`mail.geniusbrain.jp`

CNAME	`geniusbrain.jp`
DNSSEC	⚠️ Not signed
A	219.94.129.181^{🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
		PTR	`www1141.sakura.ne.jp`
NS	`master.dns.ne.jp` ⭐
		A	210.224.172.18^{🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`master.dns.ne.jp`
NS	`ns1.dns.ne.jp`
		A	61.211.236.1^{🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`ns1.dns.ne.jp`
NS	`ns2.dns.ne.jp`
		A	133.167.21.1^{🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan}
			PTR	`ns2.dns.ne.jp`
MX	`geniusbrain.jp` ⭐
		A	219.94.129.181^{🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www1141.sakura.ne.jp`
TXT	`v=spf1 a:www1141.sakura.ne.jp mx ~all`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2026-03-19 #1

`geniusbrain.jp`

	DNSSEC	⚠️ Not signed
	A	219.94.129.181^{🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
	NS	`master.dns.ne.jp` ⭐
	NS	`ns1.dns.ne.jp`
	NS	`ns2.dns.ne.jp`
	MX	`geniusbrain.jp` ⭐
	TXT	`v=spf1 a:www1141.sakura.ne.jp mx ~all`
	SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2026-03-19 #1

WOT: SAFE (60/100)

Previously MX for

geniusbrain.jp

Same first word

mail.gov.mz

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mail.yokohama

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mail.nflfan.org

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DNS History

5 records (1 active, 4 former)

○MXmail.geniusbrain.jp2015-07-10 → 2016-09-19 · 4 obs

● 2015-07-10 15:21:48
● 2016-09-19 22:55:06
○ 2026-07-20 19:56:40
○ 2026-07-20 19:56:42

○MXmx1.firstserver.ne.jp2015-07-10 → 2016-09-19 · 4 obs

● 2015-07-10 15:21:48
● 2016-09-19 22:55:06
○ 2026-07-20 19:56:40
○ 2026-07-20 19:56:42

○MXmx2.firstserver.ne.jp2015-07-10 → 2016-09-19 · 4 obs

● 2015-07-10 15:21:48
● 2016-09-19 22:55:06
○ 2026-07-20 19:56:40
○ 2026-07-20 19:56:42

○A203.183.77.102015-07-10 → 2016-09-19 · 4 obs

● 2015-07-10 15:21:48
● 2016-09-19 22:55:06
○ 2026-07-20 19:56:40
○ 2026-07-20 19:56:42

●CNAMEgeniusbrain.jp2026-07-20 → 2026-07-20 · 2 obs

● 2026-07-20 19:56:40
● 2026-07-20 19:56:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	f.dns.jp, d.dns.jp, h.dns.jp, a.dns.jp...	-
geniusbrain.jp	ns2.dns.ne.jp, ns1.dns.ne.jp	2 records

✅ Authoritative Response

Server:61.211.236.1

NS records: ns2.dns.ne.jp, ns1.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for geniusbrain.jp (unsigned zone)

⏱️ Timing

Total: 892ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`geniusbrain.jp`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)

Analysis

IP Addresses

mail.geniusbrain.jp has exactly one IP address — 219.94.129.181.

hirotaa.net, suc-c.com, yuzuyuzu.jp plus two other host names have IP numbers in common with mail.geniusbrain.jp.

Name Servers

mail.geniusbrain.jp is served by three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

The name servers of mail.geniusbrain.jp overlap at least partially with those of other domains — among them takeda-online.sakura.ne.jp, kazakoshi.ed.jp, zest-fukuoka.com and two more.

These name servers commonly appear in combination with the name servers dns.sakura.ad.jp.

master.dns.ne.jp has IP address 210.224.172.18, ns1.dns.ne.jp has IP address 61.211.236.1 and ns2.dns.ne.jp has IP address 133.167.21.1 — one address each.

Mail Servers

mail.geniusbrain.jp uses one mail server — geniusbrain.jp.

mail.geniusbrain.jp uses the same mail servers as other domains, including geniusbrain.jp.

geniusbrain.jp resolves to 219.94.129.181 and no other IP number.

mail.geniusbrain.jp - robtex.com