`kosakan.com`

DNSSEC	⚠️ Not signed
A	114.17.21.150^{🇯🇵 KDDI114.17.0.0/16}
		PTR	`dns7.n-server.com`
NS	`ns.kosakan.com` ⭐ ⚠️ Not in parent delegation
		A	114.17.21.150^{🇯🇵 KDDI114.17.0.0/16}
			PTR	`dns7.n-server.com`
NS	`dns136.n-server.com` ⚠️ Not in zone NS records
		A	114.17.21.136^{🇯🇵 KDDI114.17.0.0/16}
			PTR	`dns136.n-server.com`
NS	`dns7.n-server.com` ⚠️ Not in zone NS records
		A	114.17.21.150^{🇯🇵 KDDI114.17.0.0/16}
			PTR	`dns7.n-server.com`
MX	`mail.kosakan.com` ⭐
		A	114.17.21.150^{🇯🇵 KDDI114.17.0.0/16}
			PTR	`dns7.n-server.com`
TXT	`v=spf1 +a +mx -all`
SOA	`ns.kosakan.com`plesk@purenic.jp 2025-10-15 #4

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774409337

Subdomains

mail.kosakan.com

ns.kosakan.com

Same first word

kosakan.com

kosakan.de

Similar names

kakosan.com.tr

kakosan.com

kasokan.com

ankokas.com

osknaka.com

anakkos.net

knakaso.blogspot.com

oknaksa.ru

asanokk.com

DNS History

6 records (5 active, 1 former)

●NSdns136.n-server.com2026-03-20 → 2026-03-25 · 3 obs

○ 2016-12-20 09:09:44
● 2026-03-20 15:39:22
● 2026-03-25 03:56:32

●NSdns7.n-server.com2026-03-20 → 2026-03-25 · 3 obs

○ 2016-12-20 09:09:44
● 2026-03-20 15:39:22
● 2026-03-25 03:56:32

●NSns.kosakan.com2016-12-20 → 2026-03-25 · 2 obs

● 2016-12-20 09:09:44
● 2026-03-25 03:56:32

●MXmail.kosakan.com2016-12-20 → 2026-03-25 · 2 obs

● 2016-12-20 09:09:44
● 2026-03-25 03:56:32

●A114.17.21.1502026-03-20 → 2026-03-25 · 3 obs

○ 2018-08-13 20:23:58
● 2026-03-20 15:39:22
● 2026-03-25 03:56:32

○A210.254.102.2032016-12-20 → 2018-08-13 · 4 obs

● 2016-12-20 09:09:44
● 2018-08-13 20:23:58
○ 2026-03-20 15:39:22
○ 2026-03-25 03:56:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net...	-
kosakan.com	dns7.n-server.com, dns136.n-server.com	2 records

✅ Authoritative Response

Server:114.17.21.150

NS records: dns7.n-server.com, dns136.n-server.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kosakan.com (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`114.17.21.150`
NS	1	`ns.kosakan.com`
MX	1	`mail.kosakan.com (pri: 10)`
TXT	1	`v=spf1 +a +mx -all`
SOA	1	`ns.kosakan.com plesk.purenic.jp`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns7.n-server.com, dns136.n-server.com)

Analysis

Hierarchy

kosakan.com is a parent of mail.kosakan.com and ns.kosakan.com.

IP Addresses

kosakan.com points to a single IP address: 114.17.21.150.

Other host names such as ns.shida-dental.net, ns.koryori-ikkyu.com, otakajuen.com, wash-hc.co.jp and kumashiro-sv.co.jp share IP numbers with kosakan.com.

Name Servers

kosakan.com is delegated to three name servers: ns.kosakan.com, dns136.n-server.com and dns7.n-server.com.

At least part of the name servers for kosakan.com are shared with other domains, for instance lionhart0808.com, osouji-jack.jp, avan-bs.com, fujimax.co.jp and shofukuin.or.jp.

these name servers are commonly used with the name servers dns12.n-server.com, dns15.n-server.com, dns19.n-server.com, dns20.n-server.com, dns3.n-server.com, dns16.n-server.com, dns14.n-server.com, dns10.n-server.com, dns4.n-server.com and p03ns11.puretopure.jp.

Hosts with a single IP:

ns.kosakan.com points to: 114.17.21.150.

dns136.n-server.com points to: 114.17.21.136.

dns7.n-server.com points to: 114.17.21.150.

Hosts pointing to 114.17.21.150: ns.kosakan.com and dns7.n-server.com.

Mail Servers

The mail server for kosakan.com is mail.kosakan.com.

Host mail.kosakan.com points to IP 114.17.21.150.

kosakan.com - robtex.com

kosakan.com

com