`npobook.com`

DNSSEC	⚠️ Not signed
A	202.254.239.82^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
		PTR	`sv7401.xserver.jp`
NS	`ns1.xserver.jp` ⭐
		A	202.226.36.164^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.170^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.246^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns1.xserver.jp`
NS	`ns2.xserver.jp`
		A	35.72.43.26^{🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix}
			PTR	`ns2.xserver.jp`
NS	`ns3.xserver.jp`
		A	202.226.36.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns3.xserver.jp`
NS	`ns4.xserver.jp`
		A	183.90.224.226^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	183.90.224.230^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	202.226.39.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns4.xserver.jp`
NS	`ns5.xserver.jp`
		A	157.112.182.218^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	157.112.182.220^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	202.226.37.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns5.xserver.jp`
MX	`npobook.com` ⭐
		A	202.254.239.82^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
			PTR	`sv7401.xserver.jp`
TXT	`v=spf1 +a:sv7401.xserver.jp +a:npobook.com +mx include:spf.sender.xserver.jp ...`
SOA	`ns1.xserver.jp`root@xserver.jp serial=0

`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=1774781577

MX for

npobook.com

Same first word

npobook.com

Similar names

opnbook.netlify.app

bookpon.com

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
npobook.com	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...	-

✅ Authoritative Response

Server:183.90.224.226

NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for npobook.com (unsigned zone)

⏱️ Timing

Total: 1081ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.254.239.82`
NS	5	`ns5.xserver.jp, ns2.xserver.jp...`
MX	1	`npobook.com (pri: 0)`
TXT	1	`v=spf1 +a:sv7401.xserver.jp +a:npobook.c`
SOA	1	`ns1.xserver.jp root.xserver.jp`

Analysis

Mail Server Role

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

IP Addresses

npobook.com points to a single IP number: 202.254.239.82.

Other host names, for instance harukadrugstore.site, sv7401.xserver.jp, sonmey.com, tm-bus.com and asahi-bc.co.jp share IP numbers with npobook.com.

Name Servers

npobook.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.

npobook.com shares name servers with other domains at least partially, for instance kasoutsuuka-matome.com, triwind.com, wyswcy.com, tecair.co.jp and agripark.net.

Host names with three IP numbers:

ns1.xserver.jp points to: 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp points to: 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp points to: 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Host names with one IP number:

ns2.xserver.jp points to: 35.72.43.26.

ns3.xserver.jp points to: 202.226.36.247.

Mail Servers

A single mail server handles npobook.com and npobook.com.

Host name npobook.com resolves to IP 202.254.239.82.

npobook.com - robtex.com

npobook.com

com