`accretech.vn`

DNSSEC	⚠️ Not signed
A	103.77.162.35^{🇻🇳 SUPERDATA103.77.162.0/24 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	`riyadh.maychu.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	`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	`accretech-vn.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms91019428`
TXT	`google-site-verification=npKFPxBV9udpdJt39KiAOh0GdJvFoWuuIW4NNeaTb54`
TXT	`google-site-verification=UTK4LaW46XwSYaBln0_8Lij71_AtD1rsyvYYmjsvBmg`
TXT	`zalo-platform-site-verification=KeQK1uIMCXbIu-W6cS970XtDzYNnko1_E3as`
SOA	`ns1.dotvndns.vn`hostmaster@accretech.vn 2025-06-25 #88

`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

🔒 HSTS Preload (+subdomains)

Subdomains

cpcontacts.accretech.vn

cpcalendars.accretech.vn

www.accretech.vn

webmail.accretech.vn

webdisk.accretech.vn

cpanel.accretech.vn

Same first word

accretech.com.my

accretech.fr

accretech.at

accretech.de

accretech.ch

accretech.jp

accretech.vn

accretech.eu

accretech.com

accretech.co.id

accretech.com.sg

accretech.net

Similar names

cercatech.com.br

teachercc.com

reccatech.com

ccteacher.org

techccare.com

cacertech.com

certcache.com

accertech.com

teachercc.org

DNS History

13 records (5 active, 8 former)

●NSns1.dotvndns.vn2026-05-01 → 2026-05-10 · 3 obs

○ 2020-01-23 07:21:04
● 2026-05-01 08:21:18
● 2026-05-10 01:50:30

○NSns1.vmms.vn2017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

●NSns2.dotvndns.vn2026-05-01 → 2026-05-10 · 3 obs

○ 2020-01-23 07:21:04
● 2026-05-01 08:21:18
● 2026-05-10 01:50:30

○NSns2.vmms.vn2017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

○NSns3.vmms.vn2017-03-27 → 2017-03-27 · 3 obs

● 2017-03-27 05:44:32
○ 2020-01-23 07:21:04
○ 2026-05-10 01:50:30

●NSnsbak.dotvndns.com2026-05-01 → 2026-05-10 · 3 obs

○ 2020-01-23 07:21:04
● 2026-05-01 08:21:18
● 2026-05-10 01:50:30

●MXaccretech-vn.mail.protection.outlook.com2026-05-01 → 2026-05-10 · 3 obs

○ 2020-01-23 07:21:04
● 2026-05-01 08:21:18
● 2026-05-10 01:50:30

○MXalt1.aspmx.l.google.com2017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

○MXalt2.aspmx.l.google.com2017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

○MXaspmx.l.google.com2017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

●A103.77.162.352026-05-01 → 2026-05-10 · 3 obs

○ 2020-01-23 07:21:04
● 2026-05-01 08:21:18
● 2026-05-10 01:50:30

○A112.213.89.32017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

○A123.30.210.1172017-03-27 → 2020-01-23 · 4 obs

● 2017-03-27 05:44:32
● 2020-01-23 07:21:04
○ 2026-05-01 08:21:18
○ 2026-05-10 01:50:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
accretech.vn	ns2.dotvndns.vn, ns1.dotvndns.vn, nsbak.dotvndns.com	4 records

✅ Authoritative Response

Server:222.255.121.247

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for accretech.vn (unsigned zone)

⏱️ Timing

Total: 2247ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.77.162.35`
NS	3	`ns1.dotvndns.vn, nsbak.dotvndns.com...`
MX	1	`accretech-vn.mail.protection.outlook.com`
TXT	5	`google-site-verification=UTK4LaW46XwSYaB, v=spf1 include:spf.protection.outlook.co...`
SOA	1	`ns1.dotvndns.vn hostmaster.accretech.vn`

📌 Glue Records Collected

Total: 4

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

Analysis

Hierarchy

accretech.vn is the parent of cpcontacts.accretech.vn, cpcalendars.accretech.vn, www.accretech.vn, webmail.accretech.vn, webdisk.accretech.vn and a few other host names.