`mail.chumdan21.com`

	DNSSEC	⚠️ Not signed
	A	223.130.85.56^{🇰🇷 DIRECT-AS-KR223.130.85.0/24}

`chumdan21.com`

	DNSSEC	⚠️ Not signed
	NS	`ns1.sdsns.com` ⭐
	NS	`ns2.sdsns.com`
	MX	`mail.chumdan21.com` ⭐
	TXT	`v=spf1 include:_spf1.mailnara.co.kr include:_spf2.mailnara.co.kr include:_spf...`
	SOA	`ns1.sdsns.com`firechoi@sds.co.kr 2016-08-10 #16

MX for

chumdan21.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A223.130.85.562017-04-08 → 2026-05-14 · 2 obs

● 2017-04-08 08:59:58
● 2026-05-14 21:59:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
chumdan21.com	ns1.sdsns.com, ns2.sdsns.com	2 records

✅ Authoritative Response

Server:211.115.203.112

NS records: ns1.sdsns.com, ns2.sdsns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for chumdan21.com (unsigned zone)

⏱️ Timing

Total: 515ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`223.130.85.56`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.sdsns.com, ns2.sdsns.com)

Analysis

Mail Server Role

mail.chumdan21.com serves as the mail server for chumdan21.com.

IP Addresses

mail.chumdan21.com points to a single IP address: 223.130.85.56.

Other host names such as mail.21pos.co.kr, mail.jskzip.com, mail.openmedical.co.kr, mail.dia-lux.com and mail.msteel.co.kr share IP numbers with mail.chumdan21.com.

mail.chumdan21.com - robtex.com