`mail.shimo-class.com`

DNSSEC	⚠️ Not signed
A	18.180.13.163^{🇯🇵 Amazon18.180.0.0/15 EC2 NRT prefix}
		PTR	`ec2-18-180-13-163.ap-northeast-1.compute.amazonaws.com`

`shimo-class.com`

	DNSSEC	⚠️ Not signed
	A	18.180.13.163^{🇯🇵 Amazon18.180.0.0/15 EC2 NRT prefix}
	NS	`ns-1695.awsdns-19.co.uk` ⭐
	NS	`ns-1057.awsdns-04.org`
	NS	`ns-363.awsdns-45.com`
	NS	`ns-830.awsdns-39.net`
	MX	`mail.shimo-class.com` ⭐
	TXT	`v=spf1 ip4:18.180.13.163 ~all`
	SOA	`ns-1695.awsdns-19.co.uk`awsdns-hostmaster@amazon.com serial=1

MX for

shimo-class.com

Same first word

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DNS History

3 records (1 active, 2 former)

○A18.178.220.1632026-03-09 → 2026-05-13 · 2 obs

○ 2026-03-09 06:23:38
○ 2026-05-13 00:25:30

●A18.180.13.1632026-03-09 → 2026-05-13 · 3 obs

○ 2016-04-27 05:47:56
● 2026-03-09 06:23:38
● 2026-05-13 00:25:30

○A202.95.223.682015-07-03 → 2016-04-27 · 4 obs

● 2015-07-03 10:03:22
● 2016-04-27 05:47:56
○ 2026-03-09 06:23:38
○ 2026-05-13 00:25:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net...	-
shimo-class.com	ns-363.awsdns-45.com, ns-830.awsdns-39.net, ns-1057.awsdns-04.org, ns-1695.awsdns-19.co.uk	2 records

✅ Authoritative Response

Server:205.251.193.107

NS records: ns-363.awsdns-45.com, ns-830.awsdns-39.net, ns-1057.awsdns-04.org, ns-1695.awsdns-19.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for shimo-class.com (unsigned zone)

⏱️ Timing

Total: 270ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`18.180.13.163`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-363.awsdns-45.com, ns-363.awsdns-45.com)

Analysis

Mail Server Role

mail.shimo-class.com serves as a mail server for shimo-class.com.

IP Addresses

mail.shimo-class.com resolves to one IP number: 18.180.13.163.

Other host names, for instance mail.ikaruga.co.jp, mail.khnum.net, mail.rsbbc.com, redstar53.com and shimo-class.com share IP numbers with mail.shimo-class.com.

mail.shimo-class.com - robtex.com