`mail.sungjinmtech.com`

CNAME	`umails01.mailplug.com`
DNSSEC	⚠️ Not signed
A	121.156.118.152^{🇰🇷 KT-NET121.152.0.0/13}
		PTR	`umails01.mailplug.co.kr`

`sungjinmtech.com`

	DNSSEC	⚠️ Not signed
	A	121.78.246.66^{🇰🇷 KINXIDC-AS-KR121.78.246.0/24 KINX_IDC}
	NS	`ns1.rootnet.kr` ⭐
	NS	`ns2.rootnet.kr`
	MX	`mx01.mailplug.com` ⭐
	MX	`mx02.mailplug.com`⁽²⁰⁾
	TXT	`v=spf1 mx include:mailplug.com ~all`
	SOA	`ns1.rootnet.kr`dnsadmin@rootnet.co.kr 2021-02-18 #11

Previously MX for

sungjinmtech.com

Same first word

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mail.dating

mail.travel

mail.td

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mail.loginto.me

mail.bio

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mail.main.jp

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mail.watch

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mail.vacations

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mail.gov.mz

mail.gov.ph

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mail.dnsalias.com

mail.com.tr

mail.ai

mail.org.ru

mail.re

mail.credit

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mail.co.com

mail.perspecta.cloud

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mail.nu

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mail.rv.ua

mail.ox.rs

mail.idv.tw

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mail.ke

mail.net.sa

mail.idf.il

mail.house

mail.mk

mail.club

mail.news

mail.daa.jp

mail.sd

mail.co.id

mail.top

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mail.iki.fi

mail.gouv.ml

mail.limited

mail.man

mail.gen.tr

mail.zip

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mail.brasilia.me

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DNS History

2 records (1 active, 1 former)

○A123.111.231.322015-06-16 → 2016-06-29 · 4 obs

● 2015-06-16 19:31:34
● 2016-06-29 02:11:02
○ 2026-03-18 06:17:08
○ 2026-04-29 14:09:52

●CNAMEumails01.mailplug.com2026-03-18 → 2026-04-29 · 2 obs

● 2026-03-18 06:17:08
● 2026-04-29 14:09:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net...	-
sungjinmtech.com	ns1.rootnet.kr, ns2.rootnet.kr	-

✅ Authoritative Response

Server:103.6.101.39

NS records: ns1.rootnet.kr, ns2.rootnet.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sungjinmtech.com (unsigned zone)

⏱️ Timing

Total: 1052ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`umails01.mailplug.com`

Analysis

IP Addresses

mail.sungjinmtech.com maps to IP address 121.156.118.152.

Other host names for instance umails01.mailplug.com and umails01.mailplug.co.kr share IP numbers with mail.sungjinmtech.com.

mail.sungjinmtech.com - robtex.com