`cleantechvn.com.vn`

DNSSEC	⚠️ Not signed
A	171.244.49.177^{🇻🇳 VTDC-AS-VN171.244.48.0/22 Proxy-registered route object}
NS	`ns1.dotvndns.vn` ⭐
		A	2406:9c80::66^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns1.dotvndns.vn`
		A	112.213.89.3^{🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
			PTR	`ns1.dotvndns.vn`
NS	`ns2.dotvndns.vn`
		A	2406:9c80::9000:111^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns2.dotvndns.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
NS	`ns3.dotvndns.vn`
		A	112.213.89.22^{🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
			PTR	`ns8922.dotvndns.vn`
NS	`nsbak.dotvndns.com`
		A	2406:9c80::9000:302^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`nsbak.dotvndns.com`
		A	112.213.89.22^{🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
			PTR	`ns8922.dotvndns.vn`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4003:c4a::1b^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulth-in-f27.1e100.net`
		A	142.251.96.27^{🇺🇸 Google142.250.0.0/15}
			PTR	`yutulth-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=NLKgFt1mz3DIJU_k-COyRk4ar4nhUXhmwt-MMlAodFc`
SOA	`ns1.dotvndns.vn`hostmaster@cleantechvn.com.vn 2026-01-06 #6

`com.vn`

	DNSSEC	⚠️ Not signed
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`b.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`c.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`d.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`e.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`f.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`g.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`h.dns-servers.vn` ⚠️ Not in parent delegation
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2022710575

Same first word

cleantechvn.com.vn

DNS History

10 records (10 active, 0 former)

●NSns1.dotvndns.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●NSns2.dotvndns.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●NSns3.dotvndns.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●NSnsbak.dotvndns.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●MXalt1.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●MXalt2.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●MXalt3.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●MXalt4.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●MXaspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

●A171.244.49.1772026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 14:03:30
● 2026-05-11 20:39:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
cleantechvn.com.vn	nsbak.dotvndns.com, ns2.dotvndns.vn, ns1.dotvndns.vn, ns3.dotvndns.vn	-

✅ Authoritative Response

Server:112.213.89.22

NS records: nsbak.dotvndns.com, ns2.dotvndns.vn, ns1.dotvndns.vn, ns3.dotvndns.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cleantechvn.com.vn (unsigned zone)

⏱️ Timing

Total: 3224ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`171.244.49.177`
NS	4	`ns1.dotvndns.vn, ns3.dotvndns.vn...`
MX	5	`alt2.aspmx.l.google.com (pri: 5), aspmx.l.google.com (pri: 1)...`
TXT	2	`google-site-verification=NLKgFt1mz3DIJU_, v=spf1 include:_spf.google.com ~all`
SOA	1	`ns1.dotvndns.vn hostmaster.cleantechvn.c`