`ntkinternational.com`

DNSSEC	⚠️ Not signed
A	116.80.23.221^{🇯🇵 InfoSphere116.80.0.0/16 INFOSPHERE}
		PTR	`ntkinternational.com`
NS	`ns3.sphere.ad.jp` ⭐
		A	202.239.113.22^{🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE}
			PTR	`ns3.sphere.ad.jp`
NS	`ns4.sphere.ad.jp`
		A	202.239.113.30^{🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE}
			PTR	`ns4.sphere.ad.jp`
MX	`ntkinternational.com` ⭐
		A	116.80.23.221^{🇯🇵 InfoSphere116.80.0.0/16 INFOSPHERE}
			PTR	`ntkinternational.com`
TXT	`v=spf1 include:fmx.etius.jp +ip4:116.80.23.221/32 +ip4:116.80.22.2/32 -all`
SOA	`ns3.sphere.ad.jp`dns@sphere.ad.jp serial=1666750147

`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=1777102971

PTR for

221.23.80.116.in-addr.arpa

MX for

ntkinternational.com

Subdomains

www.ntkinternational.com

Same first word

ntkinternational.com

DNS History

5 records (4 active, 1 former)

●NSns3.sphere.ad.jp2015-06-30 → 2026-04-25 · 2 obs

● 2015-06-30 21:04:22
● 2026-04-25 08:09:26

●NSns4.sphere.ad.jp2015-06-30 → 2026-04-25 · 2 obs

● 2015-06-30 21:04:22
● 2026-04-25 08:09:26

●MXntkinternational.com2015-06-30 → 2026-04-25 · 2 obs

● 2015-06-30 21:04:22
● 2026-04-25 08:09:26

●A116.80.23.2212026-03-26 → 2026-04-25 · 3 obs

○ 2018-07-15 13:38:38
● 2026-03-26 07:06:58
● 2026-04-25 08:09:26

○A202.229.18.1772015-06-30 → 2018-07-15 · 4 obs

● 2015-06-30 21:04:22
● 2018-07-15 13:38:38
○ 2026-03-26 07:06:58
○ 2026-04-25 08:09:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ntkinternational.com	ns3.sphere.ad.jp, ns4.sphere.ad.jp	-

✅ Authoritative Response

Server:202.239.113.30

NS records: ns3.sphere.ad.jp, ns4.sphere.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ntkinternational.com (unsigned zone)

⏱️ Timing

Total: 1170ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`116.80.23.221`
NS	2	`ns4.sphere.ad.jp, ns3.sphere.ad.jp`
MX	1	`ntkinternational.com (pri: 10)`
TXT	1	`v=spf1 include:fmx.etius.jp +ip4:116.80.`
SOA	1	`ns3.sphere.ad.jp dns.sphere.ad.jp`

Analysis

Hierarchy

ntkinternational.com is a parent of www.ntkinternational.com.

Mail Server Role

ntkinternational.com serves as the mail server for ntkinternational.com.

IP Addresses

ntkinternational.com points to a single IP address: 116.80.23.221.

Other host names, for instance www.ntkinternational.com, share IP numbers with ntkinternational.com.

Name Servers

ntkinternational.com is delegated to two name servers: ns3.sphere.ad.jp and ns4.sphere.ad.jp.

ntkinternational.com uses the same name server setup as other domains, including dc-a.jp, yacgroup.or.jp, pw-i.com, 3ei.net and falma.co.jp.

ntkinternational.com shares some name servers with other domains, for example ones-quest.co.jp.

Hostnames with a single IP

ns3.sphere.ad.jp resolves to: 202.239.113.22.

ns4.sphere.ad.jp resolves to: 202.239.113.30.

Mail Servers

Mail for ntkinternational.com is handled by a single mail server, ntkinternational.com.

Host ntkinternational.com points to IP 116.80.23.221.

ntkinternational.com - robtex.com