`viettechsoft.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:1098^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:d5a8^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.152^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.168^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bill.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b4a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bill.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bill.ns.cloudflare.com`
		A	108.162.193.74^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	172.64.33.74^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	173.245.59.74^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
NS	`linda.ns.cloudflare.com`
		A	2606:4700:50::adf5:3afa^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`linda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0fa^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`linda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20fa^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`linda.ns.cloudflare.com`
		A	108.162.192.250^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`linda.ns.cloudflare.com`
		A	172.64.32.250^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`linda.ns.cloudflare.com`
		A	173.245.58.250^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`linda.ns.cloudflare.com`
MX	`mail93155.maychuemail.com` ⭐
		A	112.213.93.155^{🇻🇳 SUPERDATA112.213.93.0/24 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	`mail93155.maychuemail.com`
MX	`mx93155.maychuemail.net`⁽¹⁰⁾
		A	112.213.93.155^{🇻🇳 SUPERDATA112.213.93.0/24 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	`mail93155.maychuemail.com`
TXT	`v=spf1 include:spf.maychuemail.com ~all`
TXT	`zalo-platform-site-verification=I-MX5Alt6Wrkyvq6wCuS6oxzc1l2YqnDCJ8r`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.152, 172.67.213.168
		IPv6 hints	2606:4700:3031::6815:1098, 2606:4700:3031::ac43:d5a8
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=172, name=cloudflare-ech.com
SOA	`bill.ns.cloudflare.com`dns@cloudflare.com serial=2403759024

`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=2030761073

Same first word

viettechsoft.vn

DNS History

8 records (8 active, 0 former)

●NSbill.ns.cloudflare.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●NSlinda.ns.cloudflare.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●MXmail93155.maychuemail.com2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●MXmx93155.maychuemail.net2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●A104.21.16.1522026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●A172.67.213.1682026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●A2606:4700:3031::6815:10982026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

●A2606:4700:3031::ac43:d5a82026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 18:13:08
● 2026-05-11 23:44:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, g.dns-servers.vn, e.dns-servers.vn, d.dns-servers.vn...	-
viettechsoft.vn	bill.ns.cloudflare.com, linda.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.74

NS records: bill.ns.cloudflare.com, linda.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for viettechsoft.vn (unsigned zone)

⏱️ Timing

Total: 1151ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.213.168, 104.21.16.152`
AAAA	2	`2606:4700:3031::ac43:d5a8, 2606:4700:3031::6815:1098`
NS	2	`bill.ns.cloudflare.com, linda.ns.cloudflare.com`
MX	2	`mx93155.maychuemail.net (pri: 10), mail93155.maychuemail.com (pri: 5)`
TXT	2	`v=spf1 include:spf.maychuemail.com ~all, zalo-platform-site-verification=I-MX5Alt`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bill.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

viettechsoft.vn resolves to four IPs: 2606:4700:3031::6815:1098, 2606:4700:3031::ac43:d5a8, 104.21.16.152 and 172.67.213.168.

Other host names such as luxinlady.org, yhk198.com, partizansk.eu, debarrasparispro.fr and oncubilge.com share IP numbers with viettechsoft.vn.

Name Servers

viettechsoft.vn is delegated to two name servers: bill.ns.cloudflare.com and linda.ns.cloudflare.com.

viettechsoft.vn uses the same name server setup as other domains, including deez.wtf, zelomed.com, nextblock.io, demas-rostov.ru and belizefisheriesproject.org.

At least part of the name servers for viettechsoft.vn are shared with other domains, for instance hnshandu.com, movie24.club, mattxmx.workers.dev, dough-jo.com and farmingtonbank.com.

These name servers are commonly used alongside the name servers nena.ns.cloudflare.com.

Host names with six IP numbers:

bill.ns.cloudflare.com points to: 2606:4700:58::adf5:3b4a, 2803:f800:50::6ca2:c14a, 2a06:98c1:50::ac40:214a, 108.162.193.74, 172.64.33.74 and 173.245.59.74.

linda.ns.cloudflare.com points to: 2606:4700:50::adf5:3afa, 2803:f800:50::6ca2:c0fa, 2a06:98c1:50::ac40:20fa, 108.162.192.250, 172.64.32.250 and 173.245.58.250.

Mail Servers

viettechsoft.vn is handled by two mail servers: mail93155.maychuemail.com and mx93155.maychuemail.net.

viettechsoft.vn uses the same mail server setup as other domains, for instance dailymeat.vn, bvcantho.vn, bichsoncentralpoint.vn, avsmart.vn and santiago.com.vn.

viettechsoft.vn shares at least some mail servers with other domains, for example boka.ltd, thietbidiencongnghiep.com.vn, ski.com.vn, kindergarden.vn and soscorp.vn.

Host names sharing a single IP: mail93155.maychuemail.com and mx93155.maychuemail.net point to 112.213.93.155.

viettechsoft.vn - robtex.com

viettechsoft.vn

vn

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`viettechsoft.vn`

`vn`