`smtp.dongnamtech.com`

DNSSEC

⚠️ Not signed

`dongnamtech.com`

	DNSSEC	⚠️ Not signed
	NS	`ns1.pavietnam.vn` ⚠️ Not in zone NS records
	NS	`ns2.pavietnam.vn` ⚠️ Not in zone NS records
	NS	`nsbak.pavietnam.net` ⚠️ Not in zone NS records

Previously MX for

dongnamtech.com

Same first word

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DNS History

1 record (0 active, 1 former)

○A211.53.38.62017-05-22 → 2017-05-22 · 3 obs

● 2017-05-22 03:36:18
○ 2026-04-09 11:08:20
○ 2026-05-09 07:32:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, d.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net...	-
dongnamtech.com	nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn	-

✅ Authoritative Response

Server:222.255.121.247

NS records: nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dongnamtech.com (unsigned zone)

⏱️ Timing

Total: 790ms | Queries: -

📄 Records

Type	Count	Sample Data

smtp.dongnamtech.com - robtex.com