`koteyama.com`

DNSSEC	⚠️ Not signed
A	121.94.87.39^{🇯🇵 INFOWEB121.94.64.0/18 InfoWeb}
		PTR	`ntngno123039.ngno.nt.ngn.ppp.infoweb.ne.jp`
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns5.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`cj3029412-a.koteyama.com` ⭐
		A	121.94.87.39^{🇯🇵 INFOWEB121.94.64.0/18 InfoWeb}
			PTR	`ntngno123039.ngno.nt.ngn.ppp.infoweb.ne.jp`
MX	`koteyama.com` ⭐
		A	121.94.87.39^{🇯🇵 INFOWEB121.94.64.0/18 InfoWeb}
			PTR	`ntngno123039.ngno.nt.ngn.ppp.infoweb.ne.jp`
SOA	`ns1.value-domain.com`hostmaster@koteyama.com 2020-08-26 #19

`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=1785604397

MX for

koteyama.com

Subdomains

cj3029412-a.koteyama.com

cj3029412-f.koteyama.com

Same first word

koteyama.com

Similar names

metayoka.io

DNS History

8 records (8 active, 0 former)

●NSns1.value-domain.com2015-08-04 → 2026-08-01 · 2 obs

● 2015-08-04 17:13:12
● 2026-08-01 17:13:44

●NSns2.value-domain.com2015-08-04 → 2026-08-01 · 2 obs

● 2015-08-04 17:13:12
● 2026-08-01 17:13:44

●NSns3.value-domain.com2026-03-24 → 2026-08-01 · 3 obs

○ 2015-08-04 17:13:12
● 2026-03-24 04:06:50
● 2026-08-01 17:13:44

●NSns4.value-domain.com2026-03-24 → 2026-08-01 · 3 obs

○ 2015-08-04 17:13:12
● 2026-03-24 04:06:50
● 2026-08-01 17:13:44

●NSns5.value-domain.com2026-03-24 → 2026-08-01 · 3 obs

○ 2015-08-04 17:13:12
● 2026-03-24 04:06:50
● 2026-08-01 17:13:44

●MXcj3029412-a.koteyama.com2015-08-04 → 2026-08-01 · 2 obs

● 2015-08-04 17:13:12
● 2026-08-01 17:13:44

●MXkoteyama.com2015-08-04 → 2026-08-01 · 2 obs

● 2015-08-04 17:13:12
● 2026-08-01 17:13:44

●A121.94.87.392015-08-04 → 2026-08-01 · 2 obs

● 2015-08-04 17:13:12
● 2026-08-01 17:13:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
koteyama.com	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...	5 records

✅ Authoritative Response

Server:172.64.52.38

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koteyama.com (unsigned zone)

⏱️ Timing

Total: 468ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.94.87.39`
NS	2	`ns2.value-domain.com, ns1.value-domain.com`
MX	2	`koteyama.com (pri: 10), cj3029412-a.koteyama.com (pri: 10)`
SOA	1	`ns1.value-domain.com hostmaster.koteyama`

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Hierarchy

cj3029412-a.koteyama.com and cj3029412-f.koteyama.com are both subdomains of koteyama.com.

Mail Server Role

koteyama.com is listed as a mail server for itself.

cj3029412-a.koteyama.com is often seen acting as a mail server in combination with koteyama.com.

IP Addresses

koteyama.com resolves to one IP address: 121.94.87.39.

koteyama.com shares its IP numbers with other host names like cj3029412-f.koteyama.com, ntngno123039.ngno.nt.ngn.ppp.infoweb.ne.jp and cj3029412-a.koteyama.com.

Name Servers

koteyama.com has five name servers, which are ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com and two others.

koteyama.com shares at least some of its name servers with other domains, including money-farm.com, meddic.jp, idea-st.com and two others.

It is common to find these name servers alongside the name servers ns4.value-domain.com, ns5.value-domain.com, ns11.value-domain.com and two others.

Hosts with just one IP address:

ns1.value-domain.com directs to 172.64.52.38.

ns2.value-domain.com directs to 172.64.53.3.

ns3.value-domain.com directs to 172.64.52.38.

ns4.value-domain.com directs to 172.64.53.3.

ns5.value-domain.com directs to 172.64.52.38.

The host names ns1.value-domain.com, ns3.value-domain.com and ns5.value-domain.com each resolve to 172.64.52.38.

Host names pointing to 172.64.53.3 IP addresses: ns2.value-domain.com and ns4.value-domain.com.