`mail.smartflow.vn`

	DNSSEC	⚠️ Not signed
	A	103.57.220.204^{🇻🇳 VNPT-AS-VN103.57.220.0/22 INET-VN}

`smartflow.vn`

	DNSSEC	⚠️ Not signed
	A	103.138.88.115^{🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET}
	NS	`ns-master.inet.vn` ⭐
	NS	`ns1.inet.vn`
	NS	`ns2.inet.vn`
	NS	`ns3.inet.vn`
	MX	`mx.inet.vn` ⭐
	TXT	`v=spf1 a mx include:_spf.inet.vn ~all`
	TXT	`v=spf1 ip4:103.57.223.107 mx ~all`
	SOA	`ns-master.inet.vn`postmaster@inet.vn 2015-07-28 #0

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DNS History

1 record (1 active, 0 former)

●A103.57.220.2042026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 17:02:46
● 2026-05-13 15:38:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
smartflow.vn	ns3.inet.vn, ns2.inet.vn, ns1.inet.vn	3 records

✅ Authoritative Response

Server:202.92.4.253

NS records: ns3.inet.vn, ns2.inet.vn, ns1.inet.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smartflow.vn (unsigned zone)

⏱️ Timing

Total: 4058ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.57.220.204`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns1.inet.vn, ns2.inet.vn, ns3.inet.vn)

Analysis

IP Addresses

mail.smartflow.vn resolves to one IP number: 103.57.220.204.

other host names including mail.stsbmt.com, webmail.hpltech.com.vn, mail.techwave.vn, mail.thgroupjob.vn and mail.tsol.com.vn share IP numbers with mail.smartflow.vn.

mail.smartflow.vn - robtex.com