`math-room.com`

DNSSEC	⚠️ Not signed
A	183.181.84.111^{🇯🇵 XSERVER-AS183.181.84.0/22 XSERVER Inc.}
		PTR	`sv8590.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	`math-room.com` ⭐
		A	183.181.84.111^{🇯🇵 XSERVER-AS183.181.84.0/22 XSERVER Inc.}
			PTR	`sv8590.xserver.jp`
TXT	`v=spf1 +a:sv8590.xserver.jp +a:math-room.com +mx include:spf.sender.xserver.j...`
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=1774540547

MX for

math-room.com

Subdomains

mail.math-room.com

Same first word

math-room.com

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
math-room.com	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...	-

✅ Authoritative Response

Server:157.112.182.220

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 math-room.com (unsigned zone)

⏱️ Timing

Total: 1461ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.181.84.111`
NS	5	`ns5.xserver.jp, ns3.xserver.jp...`
MX	1	`math-room.com (pri: 0)`
TXT	1	`v=spf1 +a:sv8590.xserver.jp +a:math-room`
SOA	1	`ns1.xserver.jp root.xserver.jp`

Analysis

Hierarchy

math-room.com is the parent of mail.math-room.com.

Mail Server Role

For math-room.com, the mail server is math-room.com.

IP Addresses

math-room.com resolves to one IP number: 183.181.84.111.

Other host names, for instance iriomotejima-kurage.com, hirodai263.com, mail.math-room.com and sv8590.xserver.jp share IP numbers with math-room.com.

Name Servers

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

math-room.com at least partially shares name servers with other domains, for instance answer-creation.co.jp, 8068cafe.com, super-wings.com, atolla.xsrv.jp and commentaries.asia.

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

math-room.com is served by a single mail server, math-room.com.

math-room.com resolves to IP 183.181.84.111.

math-room.com - robtex.com

math-room.com

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