`leanhelper.vn`

DNSSEC	⚠️ Not signed
A	210.211.125.206^{🇻🇳 VTDC-AS-VN210.211.124.0/22 Proxy-registered route object}
		PTR	`hosting206.bkhost.cloud`
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	`ns4.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:f8b0:4023:c0b::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dd-in-f27.1e100.net`
		A	142.250.101.27^{🇺🇸 Google142.250.101.0/24}
			PTR	`dz-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.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	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.26^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=F3hTR0VIOKw5F5ymX1rtbsNErNkdvFXYiQnqTkClAoc`
SOA	`ns1.dotvndns.vn`hostmaster@leanhelper.vn 2025-01-30 #17

`vn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn`
	NS	`b.dns-servers.vn`
	NS	`c.dns-servers.vn`
	NS	`d.dns-servers.vn`
	NS	`e.dns-servers.vn`
	NS	`f.dns-servers.vn`
	NS	`g.dns-servers.vn`
	NS	`h.dns-servers.vn`
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2030753637

Subdomains

mail.leanhelper.vn

www.leanhelper.vn

Same first word

leanhelper.vn

Similar names

helenperla.blogspot.ru

lehrplaene.de

nalleperhe.net

lehrplaene.net

lehrplaene.ch

DNS History

11 records (11 active, 0 former)

●NSns1.dotvndns.vn2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●NSns2.dotvndns.vn2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●NSns3.dotvndns.vn2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●NSns4.dotvndns.vn2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●NSnsbak.dotvndns.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●MXalt1.aspmx.l.google.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●MXalt2.aspmx.l.google.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●MXalt3.aspmx.l.google.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●MXalt4.aspmx.l.google.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●MXaspmx.l.google.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

●A210.211.125.2062026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 15:59:06
● 2026-05-10 01:43:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
leanhelper.vn	ns2.dotvndns.vn, ns4.dotvndns.vn, ns3.dotvndns.vn, ns1.dotvndns.vn...	4 records

✅ Authoritative Response

Server:112.213.89.22

NS records: ns2.dotvndns.vn, ns4.dotvndns.vn, ns3.dotvndns.vn, ns1.dotvndns.vn, nsbak.dotvndns.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at vn: Error: DNS query timeout: 203.119.38.105 for DNSKEY vn

⏱️ Timing

Total: 4785ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.211.125.206`
NS	5	`ns3.dotvndns.vn, ns1.dotvndns.vn...`
MX	5	`alt1.aspmx.l.google.com (pri: 5), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=F3hTR0VIOKw5F5y, v=spf1 include:_spf.google.com ~all`
SOA	1	`ns1.dotvndns.vn hostmaster.leanhelper.vn`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.dotvndns.vn, ns2.dotvndns.vn, ns1.dotvndns.vn...)

Analysis

Hierarchy

leanhelper.vn is a parent of mail.leanhelper.vn and www.leanhelper.vn.

IP Addresses

leanhelper.vn points to IP number 210.211.125.206.

For instance, other host names www.thpttranhungdaohoian.edu.vn, vinhphatmed.vn, kpharma.vn, cpcalendars.ninhbinhford.vn and webmail.hotroxahoitphcm.vn share IP numbers with leanhelper.vn.

Name Servers

leanhelper.vn is delegated to five name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn and ns4.dotvndns.vn.

leanhelper.vn shares name servers with other domains at least partially, for example nhuapu.com, daidongthanhmachine.com, phuockhang.com, temsco.net and japanshop.vn.