`secondbrain.co.jp`

DNSSEC	⚠️ Not signed
A	112.78.112.81^{🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
		PTR	`www1771.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	`secondbrain.co.jp` ⭐
		A	112.78.112.81^{🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www1771.sakura.ne.jp`
TXT	`v=spf1 a:www1771.sakura.ne.jp mx ~all`
TXT	`google-site-verification=ESPLS3CyNc0beaWxTVu9a6oSGnSnycgq1e1wY-zz83g`
TXT	`google-site-verification=u5dYvLE45J_NhUHV6s90RQT4s92o-yECTBj1ndtnUCQ`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2024-03-04 #1

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

WOT: SAFE (58/100)

MX for

secondbrain.co.jp

Same first word

secondbrain.de

secondbrain.eu

secondbrain.com

secondbrain.co.uk

secondbrain.jp

secondbrain.co.jp

secondbrain.ai

secondbrain.it

secondbrain.org

secondbrain.net

Similar names

dbernasconi.com

bancodiners.com

briceandson.com

casinobrend.com

iconebrands.com

DNS History

9 records (5 active, 4 former)

○NSdns2.ixent.ne.jp2015-08-12 → 2016-04-30 · 4 obs

● 2015-08-12 11:19:12
● 2016-04-30 03:14:54
○ 2018-08-06 04:58:34
○ 2026-03-29 01:20:20

●NSmaster.dns.ne.jp2018-08-06 → 2026-03-29 · 3 obs

○ 2016-04-30 03:14:54
● 2018-08-06 04:58:34
● 2026-03-29 01:20:20

○NSns.secondbrain.co.jp2015-08-12 → 2016-04-30 · 4 obs

● 2015-08-12 11:19:12
● 2016-04-30 03:14:54
○ 2018-08-06 04:58:34
○ 2026-03-29 01:20:20

●NSns1.dns.ne.jp2018-08-06 → 2026-03-29 · 3 obs

○ 2016-04-30 03:14:54
● 2018-08-06 04:58:34
● 2026-03-29 01:20:20

●NSns2.dns.ne.jp2018-08-06 → 2026-03-29 · 3 obs

○ 2016-04-30 03:14:54
● 2018-08-06 04:58:34
● 2026-03-29 01:20:20

○MXmail.secondbrain.co.jp2015-08-12 → 2016-04-30 · 4 obs

● 2015-08-12 11:19:12
● 2016-04-30 03:14:54
○ 2018-08-06 04:58:34
○ 2026-03-29 01:20:20

●MXsecondbrain.co.jp2018-08-06 → 2026-03-29 · 3 obs

○ 2016-04-30 03:14:54
● 2018-08-06 04:58:34
● 2026-03-29 01:20:20

●A112.78.112.812018-08-06 → 2026-03-29 · 3 obs

○ 2016-04-30 03:14:54
● 2018-08-06 04:58:34
● 2026-03-29 01:20:20

○A210.166.220.562015-08-12 → 2016-04-30 · 4 obs

● 2015-08-12 11:19:12
● 2016-04-30 03:14:54
○ 2018-08-06 04:58:34
○ 2026-03-29 01:20:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...	-
secondbrain.co.jp	ns2.dns.ne.jp, ns1.dns.ne.jp	2 records

✅ Authoritative Response

Server:133.167.21.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 719ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`112.78.112.81`
NS	2	`ns1.dns.ne.jp, ns2.dns.ne.jp`
MX	1	`secondbrain.co.jp (pri: 10)`
TXT	3	`v=spf1 a:www1771.sakura.ne.jp mx ~all, google-site-verification=ESPLS3CyNc0beaW...`
SOA	1	`master.dns.ne.jp tech.sakura.ad.jp`

📌 Glue Records Collected

Total: 2

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

Analysis

Mail Server Role

The mail server for secondbrain.co.jp is secondbrain.co.jp.

IP Addresses

secondbrain.co.jp maps to IP address 112.78.112.81.

Other host names, for instance operalover-accompaniment.com, exinfo.org, d-sakiori.com, www.d-sakiori.com and etalagiste.jp share IP numbers with secondbrain.co.jp.

Name Servers

secondbrain.co.jp is delegated to name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

secondbrain.co.jp at least partially shares name servers with other domains such as fmpsg.info, ten9.sakura.ne.jp, ehbtj.com, jplc.sakura.ne.jp and classico-life.sakura.ne.jp.

Host names with a single IP:

master.dns.ne.jp points to 210.224.172.18

ns1.dns.ne.jp points to 61.211.236.1

ns2.dns.ne.jp points to 133.167.21.1

Mail Servers

One mail server serves secondbrain.co.jp.

secondbrain.co.jp points to one IP number: 112.78.112.81.

secondbrain.co.jp - robtex.com