🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`python-school-guide.com`

DNSSEC	⚠️ Not signed
A	183.90.238.54^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		PTR	`sv2353.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.}
NS	`ns2.xserver.jp`
		A	35.72.43.26^{🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix}
NS	`ns3.xserver.jp`
		A	202.226.36.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
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.}
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.}
MX	`python-school-guide.com` ⭐
		A	183.90.238.54^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
			PTR	`sv2353.xserver.jp`
TXT	`v=spf1 +a:sv2353.xserver.jp +a:python-school-guide.com +mx include:spf.sender...`
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=1791489529

MX for

python-school-guide.com

Same first word

python-school-guide.com

Previous names

Next names

DNS History

7 records (7 active, 0 former)

●NSns1.xserver.jp2026-10-01 → 2026-10-08 · 2 obs

● 2026-10-01 04:28:26
● 2026-10-08 20:24:54

●NSns2.xserver.jp2026-10-01 → 2026-10-08 · 2 obs

● 2026-10-01 04:28:26
● 2026-10-08 20:24:54

●NSns3.xserver.jp2026-10-01 → 2026-10-08 · 2 obs

● 2026-10-01 04:28:26
● 2026-10-08 20:24:54

●NSns4.xserver.jp2026-10-01 → 2026-10-08 · 2 obs

● 2026-10-01 04:28:26
● 2026-10-08 20:24:54

●NSns5.xserver.jp2026-10-01 → 2026-10-08 · 2 obs

● 2026-10-01 04:28:26
● 2026-10-08 20:24:54

●MXpython-school-guide.com2026-10-01 → 2026-10-08 · 4 obs

● 2026-10-01 04:28:26
○ 2026-10-07 03:08:02
● 2026-10-07 04:14:00
● 2026-10-08 20:24:54

●A183.90.238.542026-10-01 → 2026-10-08 · 4 obs

● 2026-10-01 04:28:26
○ 2026-10-07 03:08:02
● 2026-10-07 04:14:00
● 2026-10-08 20:24:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
python-school-guide.com	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...	-

✅ Authoritative Response

Server:35.72.43.26

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 python-school-guide.com (unsigned zone)

⏱️ Timing

Total: 2891ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.90.238.54`
NS	5	`ns2.xserver.jp, ns5.xserver.jp...`
MX	1	`python-school-guide.com (pri: 0)`
TXT	1	`v=spf1 +a:sv2353.xserver.jp +a:python-sc`
SOA	1	`ns1.xserver.jp root.xserver.jp`

Analysis

Mail Server Role

python-school-guide.com is listed as a mail server for itself.

IP Addresses

python-school-guide.com resolves to one IP address: 183.90.238.54.

associe-inc.com, korekarano-dougu.com, jinnmemo.com and two other host names share IP numbers with python-school-guide.com.

Name Servers

python-school-guide.com has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.

python-school-guide.com shares at least some of its name servers with other domains, including pelajarankamu.com, test-techbridge.com, mani-do.com and two others.

These name servers are frequently paired with the name servers ns4.xserver.jp and ns5.xserver.jp.

Hostnames that resolve to three IP addresses:

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.

Hosts with just one IP address:

ns2.xserver.jp points to 35.72.43.26.

ns3.xserver.jp points to 202.226.36.247.

Mail Servers

Mail for python-school-guide.com is handled by one mail server — python-school-guide.com.

python-school-guide.com resolves to a single IP number: 183.90.238.54.

python-school-guide.com - robtex.com