`mail.yoyangup.com`

	DNSSEC	⚠️ Not signed
	A	218.237.67.243^{🇰🇷 SKB-NET218.236.0.0/14 SK Broadband}

`yoyangup.com`

	DNSSEC	⚠️ Not signed
	A	221.139.49.6^{🇰🇷 SKB-NET221.138.0.0/15 SK Broadband}
	NS	`ns1.nurihosting.com` ⭐
	NS	`ns1.aramschool.co.kr` ⚠️ Not in zone NS records
	NS	`ns2.aramschool.co.kr` ⚠️ Not in zone NS records
	MX	`mail.yoyangup.com` ⭐
	TXT	`v=spf1 ip4:221.139.49.3 ip4:221.139.49.10 ip4:221.139.49.12 ip4:121.125.73.42...`
	SOA	`ns1.nurihosting.com`support@nurihosting.com 2023-01-26 #1

MX for

yoyangup.com

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DNS History

1 record (1 active, 0 former)

●A218.237.67.2432018-05-24 → 2026-05-15 · 2 obs

● 2018-05-24 08:17:12
● 2026-05-15 20:33:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
yoyangup.com	ns1.aramschool.co.kr, ns2.aramschool.co.kr	-

✅ Authoritative Response

Server:221.139.49.17

NS records: ns1.aramschool.co.kr, ns2.aramschool.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yoyangup.com (unsigned zone)

⏱️ Timing

Total: 3917ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`218.237.67.243`

Analysis

Mail Server Role

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

IP Addresses

mail.yoyangup.com points to a single IP: 218.237.67.243.

Other host names, for instance mail.tsm.or.kr, mail.kle.kr, mail.innerweb.kr, mail.hompy119.kr and mail.cafesizak.com share IP numbers with mail.yoyangup.com.

mail.yoyangup.com - robtex.com