mail.sjext.com - robtex.com

mail.sjext.com

DNSSEC⚠️ Not signed
A221.139.49.4🇰🇷 SKB-NET221.138.0.0/15 SK Broadband

sjext.com

DNSSEC⚠️ Not signed
A221.139.49.4🇰🇷 SKB-NET221.138.0.0/15 SK Broadband
NSns1.nurihosting.com ⭐
NSns1.highm.kr ⚠️ Not in zone NS records
NSns2.highm.kr ⚠️ Not in zone NS records
MXmail.sjext.com ⭐
TXTv=spf1 ip4:221.139.49.3 ip4:221.139.49.4 ~all
SOAns1.nurihosting.comsupport@nurihosting.com 2023-01-26 #1

MX for

sjext.com

Same first word

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DNS History

1 record (1 active, 0 former)

A221.139.49.4
●A221.139.49.42026-02-15 → 2026-03-23 · 2 obs
● 2026-02-15 03:10:36
● 2026-03-23 01:31:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
sjext.comns1.highm.kr, ns2.highm.kr-

✅ Authoritative Response

Server:221.139.49.17

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sjext.com (unsigned zone)

⏱️ Timing

Total: 1439ms | Queries: -

📄 Records

TypeCountSample Data
A1221.139.49.4

Analysis

Mail Server Role

mail.sjext.com is the mail server for sjext.com.

IP Addresses

mail.sjext.com resolves to one IP number: 221.139.49.4.

other host names including geomc.com, silk.kookmin.ac.kr, mail.dareeind.com, inmul.co.kr and goldenkr.com share IP numbers with mail.sjext.com.