smtp.first1tech.com - dns.ninja

smtp.first1tech.com

DNSSEC⚠️ Not signed
A211.234.105.40🇰🇷 DACOM-NET211.234.0.0/17 contact jblee@aunet.nm.kr if necessary contact ojupark@aunet.nm.kr if necessary
PTRsmtp.zioyou.com

first1tech.com

DNSSEC⚠️ Not signed
A211.39.229.187🇰🇷 MAINT-AS9457211.39.224.0/20
NSns75.koreadns.kr ⭐ ⚠️ Not in zone NS records
NSns84.koreadns.kr ⚠️ Not in zone NS records
MXsmtp.first1tech.com ⭐
MXzmail.first1tech.com(10)
TXTv=spf1 ip4:121.254.193.0/24 ip4:211.234.105.1/26 -all
SOAns75.koreadns.krhostmaster@koreadns.kr 2026-06-08 #3

MX for

first1tech.com

Same first word

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DNS History

1 record (1 active, 0 former)

A211.234.105.40
●A211.234.105.402026-04-08 → 2026-07-23 · 2 obs
● 2026-04-08 03:46:12
● 2026-07-23 21:34:00

🔍 DNS Trace

Analysis

Mail Server Role

Mail for first1tech.com is routed through the mail server smtp.first1tech.com.

zmail.first1tech.com and smtp.first1tech.com tend to appear jointly as mail servers.

IP Addresses

smtp.first1tech.com has exactly one IP address — 211.234.105.40.

smtp.energyn.com, smtp.cabletek.co.kr, smtp.sangyong.co.kr plus two other host names have IP numbers in common with smtp.first1tech.com.