koken-e.net - dns.ninja

`koken-e.net`

DNSSEC	⚠️ Not signed
NS	`ns6-tk01.ocn.ad.jp` ⭐
		A	2001:380::1053^{🇯🇵 OCN2001:380::/32 IPv6 Network, Japan}
			PTR	`ns6-tk01.ocn.ad.jp`
		A	61.207.9.4^{🇯🇵 OCN61.207.0.0/16 (AS4713) CIDR BLOCK 33 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`ns6-tk01.ocn.ad.jp`
NS	`ns6-tk02.ocn.ad.jp`
		A	2001:380:0:1::1053^{🇯🇵 OCN2001:380::/32 IPv6 Network, Japan}
			PTR	`ns6-tk02.ocn.ad.jp`
		A	61.207.9.36^{🇯🇵 OCN61.207.0.0/16 (AS4713) CIDR BLOCK 33 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`ns6-tk02.ocn.ad.jp`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=vH5h_J7hiQXV1piwiq3Kcydp3mN_gcrjhmY52W53Pi0`
SOA	`ns6-tk01.ocn.ad.jp`postmaster@koken-e.net serial=25

`net`

	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=1785766102

Subdomains

www.koken-e.net

Same first word

koken-e.net

koken-e.co.jp

Similar names

e-koken.net

e-kenko.biz

kenko-e.jp

DNS History

9 records (7 active, 2 former)

●NSns6-tk01.ocn.ad.jp2015-07-09 → 2026-08-03 · 2 obs

● 2015-07-09 20:32:38
● 2026-08-03 14:28:26

●NSns6-tk02.ocn.ad.jp2015-07-09 → 2026-08-03 · 2 obs

● 2015-07-09 20:32:38
● 2026-08-03 14:28:26

●MXalt1.aspmx.l.google.com2026-03-29 → 2026-08-03 · 3 obs

○ 2017-01-08 01:10:02
● 2026-03-29 22:24:16
● 2026-08-03 14:28:26

●MXalt2.aspmx.l.google.com2026-03-29 → 2026-08-03 · 3 obs

○ 2017-01-08 01:10:02
● 2026-03-29 22:24:16
● 2026-08-03 14:28:26

●MXalt3.aspmx.l.google.com2026-03-29 → 2026-08-03 · 3 obs

○ 2017-01-08 01:10:02
● 2026-03-29 22:24:16
● 2026-08-03 14:28:26

●MXalt4.aspmx.l.google.com2026-03-29 → 2026-08-03 · 3 obs

○ 2017-01-08 01:10:02
● 2026-03-29 22:24:16
● 2026-08-03 14:28:26

●MXaspmx.l.google.com2026-03-29 → 2026-08-03 · 3 obs

○ 2017-01-08 01:10:02
● 2026-03-29 22:24:16
● 2026-08-03 14:28:26

○MXvcgw1.ocn.ad.jp2015-07-09 → 2017-01-08 · 4 obs

● 2015-07-09 20:32:38
● 2017-01-08 01:10:02
○ 2026-03-29 22:24:16
○ 2026-08-03 14:28:26

○MXvcgw2.ocn.ad.jp2015-07-09 → 2017-01-08 · 4 obs

● 2015-07-09 20:32:38
● 2017-01-08 01:10:02
○ 2026-03-29 22:24:16
○ 2026-08-03 14:28:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	k.gtld-servers.net, j.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net...	-
koken-e.net	ns6-tk02.ocn.ad.jp, ns6-tk01.ocn.ad.jp	-

✅ Authoritative Response

Server:61.207.9.4

NS records: ns6-tk02.ocn.ad.jp, ns6-tk01.ocn.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koken-e.net (unsigned zone)

⏱️ Timing

Total: 1138ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns6-tk02.ocn.ad.jp, ns6-tk01.ocn.ad.jp`
MX	5	`aspmx.l.google.com (pri: 1), alt4.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=vH5h_J7hiQXV1pi, v=spf1 include:_spf.google.com ~all`
SOA	1	`ns6-tk01.ocn.ad.jp postmaster.koken-e.ne`

Analysis

Hierarchy

The domain www.koken-e.net falls under the parent koken-e.net.

Name Servers

koken-e.net is delegated to two name servers: ns6-tk01.ocn.ad.jp and ns6-tk02.ocn.ad.jp.

The name server configuration of koken-e.net is shared with other domains, for instance 96.102.154.210.in-addr.arpa, kak-adachi.co.jp, will.co.jp and two others.

At least some of koken-e.net's name servers are shared with other domains, for example kinki.coop, 4.162.210.in-addr.arpa, ncb-direct.ncbank.co.jp and two more.

These name servers tend to be used in conjunction with the name servers os12-dnsic1-dns1.anser.ne.jp.

ns6-tk01.ocn.ad.jp and ns6-tk02.ocn.ad.jp each resolve to two IP addresses: ns6-tk01.ocn.ad.jp points to 61.207.9.4 and 2001:380::1053, while ns6-tk02.ocn.ad.jp points to 61.207.9.36 and 2001:380:0:1::1053.

Mail Servers

Five mail servers handle koken-e.net: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by koken-e.net are shared with other domains: contexgestao.com, mvlt.org, ns500698.ns500758.ns500759.ns500759.ns500758.ns500736.ns500735.ns500736.ns500735.ns500735.ns500708.ns500576.ns500708.ns500652.trackreceptor.com and two others among them.

These mail servers are often deployed together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx.l.google.com points to 192.178.155.26 and 2607:f8b0:4004:c23::1a.

alt1.aspmx.l.google.com points to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com points to 172.253.157.27 and 2a00:1450:400c:c23::1a.