`mail.jcmcopper.com`

DNSSEC	⚠️ Not signed
A	121.156.63.174^{🇰🇷 KT-NET121.152.0.0/13}
		PTR	`mb174.mailplug.co.kr`

`jcmcopper.com`

	DNSSEC	⚠️ Not signed
	A	222.239.78.246^{🇰🇷 SKB-NET222.232.0.0/13 SK Broadband}
	NS	`ns.jcmcopper.com` ⭐ ⚠️ Not in parent delegation
	NS	`ns.netpeace.co.kr` ⚠️ Not in zone NS records
	NS	`ns.netpis.co.kr` ⚠️ Not in zone NS records
	MX	`mail.jcmcopper.com` ⭐
	SOA	`ns.jcmcopper.com`root@jcmcopper.com 2017-11-07 #4

MX for

jcmcopper.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A121.156.63.1742015-08-18 → 2026-04-13 · 2 obs

● 2015-08-18 03:47:50
● 2026-04-13 12:51:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net...	-
jcmcopper.com	ns.netpeace.co.kr, ns.netpis.co.kr	-

✅ Authoritative Response

Server:222.239.78.246

NS records: ns.netpeace.co.kr, ns.netpis.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jcmcopper.com (unsigned zone)

⏱️ Timing

Total: 1012ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.156.63.174`

Analysis

Mail Server Role

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

IP Addresses

mail.jcmcopper.com points to a single IP: 121.156.63.174.

Other host names, for instance mb174.mailplug.co.kr, mail.smt-korea.co.kr, mail.kpua.org, mail.ptron.co.kr and mail.ebl.co.kr share IP numbers with mail.jcmcopper.com.

mail.jcmcopper.com - robtex.com