mail.smecs.com - robtex.com

mail.smecs.com

DNSSEC⚠️ Not signed
A123.157.143.99🇨🇳 CHINA169-Backbone123.157.0.0/16 route of Chinaunicom
NSns1.unt-c.com ⚠️ Not in zone NS records
A220.187.225.66🇨🇳 CHINANET-BACKBONE220.184.0.0/13 China Telecom Network
NSns2.unt-c.com ⚠️ Not in zone NS records
A123.157.143.98🇨🇳 CHINA169-Backbone123.157.0.0/16 route of Chinaunicom

smecs.com

DNSSEC⚠️ Not signed
NSvip3.alidns.com ⭐
NSns1.unt-c.com ⚠️ Not in parent delegation
NSns2.unt-c.com ⚠️ Not in parent delegation
NSvip4.alidns.com
MXmail.smecs.com ⭐
TXTMS=42CC3C735A3F4536FD5D20991C42322C6199213A
TXTv=spf1 -all
TXTv=spf1 ip4:220.187.225.68 ip4:123.157.143.98 include:spf.mdgws.com ~all
SOAvip3.alidns.comhostmaster@hichina.com 2026-06-05 #11

MX for

unt-c.com
smecs.com

Same first word

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DNS History

4 records (3 active, 1 former)

NSns1.unt-c.comns2.unt-c.comA123.157.143.99220.187.225.68
●NSns1.unt-c.com2026-06-29 → 2026-07-18 · 2 obs
● 2026-06-29 19:29:16
● 2026-07-18 22:46:20
●NSns2.unt-c.com2026-06-29 → 2026-07-18 · 2 obs
● 2026-06-29 19:29:16
● 2026-07-18 22:46:20
●A123.157.143.992026-07-15 → 2026-07-18 · 3 obs
○ 2026-07-15 16:25:20
● 2026-07-15 21:18:50
● 2026-07-18 22:46:20
○A220.187.225.682026-06-29 → 2026-06-29 · 3 obs
● 2026-06-29 19:29:16
○ 2026-07-15 16:25:20
○ 2026-07-18 22:46:20

🔍 DNS Trace

Analysis

Mail Server Role

mail.smecs.com handles mail for both unt-c.com and smecs.com.

IP Addresses

mail.smecs.com resolves to one IP address: 123.157.143.99.

Name Servers

mail.smecs.com has two authoritative name servers — ns1.unt-c.com and ns2.unt-c.com.

The name servers for mail.smecs.com overlap at least partially with those of other domains — for example smecs.com.

These name servers are regularly seen alongside vip3.alidns.com and vip4.alidns.com as name servers.

ns1.unt-c.com resolves to 220.187.225.66. ns2.unt-c.com resolves to 123.157.143.98. Both host names point to a single IP number.