mail.yangsys.com - robtex.com

mail.yangsys.com

CNAMEmailapp.hiworks.co.kr
DNSSEC⚠️ Not signed
A45.120.71.59🇰🇷 DACOM-NET45.120.71.0/24
PTRmailapp.hiworks.co.kr
A121.254.168.55🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary
A211.47.76.59🇰🇷 DACOM-NET211.47.76.0/24 proxy for HANARO TELECOM route

yangsys.com

DNSSEC⚠️ Not signed
A101.202.43.163🇰🇷 MARK1-AS-KR101.202.0.0/16 DREAMMARK1
NSns1.threeany.net ⭐
NSns2.threeany.net
MXsbs-1.seculetter.com ⭐
MXmailapp.hiworks.co.kr(20)
TXTv=spf1 include:spf.hiworks.co.kr ~all
SOAns1.threeany.netroot@threeany.net 2025-02-21 #7

Previously MX for

yangsys.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A203.233.205.153CNAMEmailapp.hiworks.co.kr
○A203.233.205.1532015-05-09 → 2016-04-02 · 4 obs
● 2015-05-09 22:58:00
● 2016-04-02 07:16:34
○ 2026-06-23 23:38:36
○ 2026-06-23 23:38:38
●CNAMEmailapp.hiworks.co.kr2026-06-23 → 2026-06-23 · 2 obs
● 2026-06-23 23:38:36
● 2026-06-23 23:38:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
yangsys.comns1.threeany.net, ns2.threeany.net-

✅ Authoritative Response

Server:101.202.43.123

NS records: ns1.threeany.net, ns2.threeany.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yangsys.com (unsigned zone)

⏱️ Timing

Total: 2989ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1mailapp.hiworks.co.kr

Analysis

IP Addresses

The hostname mail.yangsys.com resolves to three IP addresses: 45.120.71.59, 121.254.168.55 and 211.47.76.59.

pop3.hiworks.co.kr, smtp.hiworks.com, mailapp.hiworks.co.kr and two other host names share IP numbers with mail.yangsys.com.