`bachkhoa-aptech.com`

DNSSEC	⚠️ Not signed
A	103.74.120.202^{🇻🇳 BKNS-AS-VN103.74.120.0/23 BKNS-VN}
NS	`dns1.vmms.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	`dns2.vmms.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	`dns3.vmms.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
MX	`alt1.aspmx.l.google.com` ⭐
		A	2800:3f0:4003:c0f::1b^{🇨🇱 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` ⭐
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com` ⭐
		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` ⭐
		A	2607:f8b0:4003:c4a::1a^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulth-in-f26.1e100.net`
		A	142.251.96.26^{🇺🇸 Google142.250.0.0/15}
			PTR	`yutulth-in-f26.1e100.net`
MX	`aspmx.l.google.com` ⭐
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	172.217.76.26^{🇺🇸 Google172.217.76.0/24}
			PTR	`yulhrp-in-f26.1e100.net`
TXT	`google-site-verification=goF0HyiU06BiSnCJSQVrbzyi0REMfEEZl9a1dCw2sWo`
SOA	`dns1.vmms.vn`hostmaster@bachkhoa-aptech.com 2025-06-02 #8

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776214977

WOT: UNKNOWN (60/100)

Subdomains

mail.bachkhoa-aptech.com

www.bachkhoa-aptech.com

Same first word

bachkhoa-aptech.com

bachkhoa-aptech.edu.vn

DNS History

20 records (9 active, 11 former)

○NSdns1.thienma.vn2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

●NSdns1.vmms.vn2026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

○NSdns2.thienma.vn2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

●NSdns2.vmms.vn2026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

○NSdns3.thienma.vn2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

●NSdns3.vmms.vn2026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

○NSns1.vmms.vn2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

●MXalt1.aspmx.l.google.com2015-08-18 → 2026-04-15 · 2 obs

● 2015-08-18 23:17:00
● 2026-04-15 01:21:52

●MXalt2.aspmx.l.google.com2015-08-18 → 2026-04-15 · 2 obs

● 2015-08-18 23:17:00
● 2026-04-15 01:21:52

●MXalt3.aspmx.l.google.com2026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

●MXalt4.aspmx.l.google.com2026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

●MXaspmx.l.google.com2015-08-18 → 2026-04-15 · 2 obs

● 2015-08-18 23:17:00
● 2026-04-15 01:21:52

○MXaspmx2.googlemail.com2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

○MXaspmx3.googlemail.com2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

○MXaspmx4.googlemail.com2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

○MXaspmx5.googlemail.com2015-08-18 → 2017-09-04 · 4 obs

● 2015-08-18 23:17:00
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

○A103.74.120.1782017-09-04 → 2017-09-04 · 4 obs

○ 2017-07-11 10:16:34
● 2017-09-04 11:10:02
○ 2026-02-14 18:52:40
○ 2026-04-15 01:21:52

●A103.74.120.2022026-02-14 → 2026-04-15 · 3 obs

○ 2017-09-04 11:10:02
● 2026-02-14 18:52:40
● 2026-04-15 01:21:52

○A123.30.210.1172017-07-11 → 2017-07-11 · 4 obs

○ 2017-06-23 00:40:54
● 2017-07-11 10:16:34
○ 2017-09-04 11:10:02
○ 2026-04-15 01:21:52

○A210.245.89.802015-08-18 → 2017-06-23 · 4 obs

● 2015-08-18 23:17:00
● 2017-06-23 00:40:54
○ 2017-07-11 10:16:34
○ 2026-04-15 01:21:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, c.gtld-servers.net, e.gtld-servers.net, g.gtld-servers.net...	-
bachkhoa-aptech.com	dns1.vmms.vn, dns2.vmms.vn, dns3.vmms.vn	-

✅ Authoritative Response

Server:112.213.89.3

NS records: dns1.vmms.vn, dns2.vmms.vn, dns3.vmms.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bachkhoa-aptech.com (unsigned zone)

⏱️ Timing

Total: 1507ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.74.120.202`
NS	3	`dns3.vmms.vn, dns2.vmms.vn...`
MX	5	`alt4.aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=goF0HyiU06BiSnC`
SOA	1	`dns1.vmms.vn hostmaster.bachkhoa-aptech.`

Analysis

Hierarchy

bachkhoa-aptech.com is a parent of mail.bachkhoa-aptech.com and www.bachkhoa-aptech.com.

IP Addresses

bachkhoa-aptech.com points to a single IP: 103.74.120.202.

Other host names, such as bachkhoa-aptech.edu.vn, share IP numbers with bachkhoa-aptech.com.

Name Servers

bachkhoa-aptech.com is delegated to three name servers: dns1.vmms.vn, dns2.vmms.vn and dns3.vmms.vn.

bachkhoa-aptech.com partially shares name servers with other domains; examples include novaref.vn, canzy.com.vn, baobihanoi.com.vn, daihocnguyentrai.edu.vn and qtc.gov.vn.

These name servers are commonly used with nsbak.pavietnam.net, ns2.pavietnam.vn, ns1.pavietnam.vn, ns1.vmms.vn, ns1.dotvndns.vn and nsbak.dotvndns.com.

Host names with one IP number: dns1.vmms.vn points to: 112.213.89.3; dns2.vmms.vn points to: 112.213.89.3; dns3.vmms.vn points to: 222.255.121.247. Host names that point to 112.213.89.3: dns1.vmms.vn and dns2.vmms.vn.

Mail Servers

Five mail servers handle bachkhoa-aptech.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

bachkhoa-aptech.com shares some mail servers with other domains, at least partially, such as skywaybrokerage.com, cagd.in, ns500759.ns500759.ns500759.ns500735.ns500735.ns500735.ns500736.ns500698.ns500698.ns500576.ns500576.ns500576.trackreceptor.com, ns500671.ns500742.ns500731.ns500731.ns500754.ns500291.ns500291.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com and rendellcenter.org.

These mail servers are often used together with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers

aspmx.l.google.com points to 2a00:1450:4009:c0f::1b and 172.217.76.26

alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1b and 108.177.123.26

alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1a and 172.253.116.26

alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1b and 192.178.223.27

alt4.aspmx.l.google.com points to 2607:f8b0:4003:c4a::1a and 142.251.96.26

Host names that point to 2a00:1450:4009:c0f::1b: aspmx.l.google.com and alt3.aspmx.l.google.com

bachkhoa-aptech.com - robtex.com