mail.sinhhoc.org - robtex.com

mail.sinhhoc.org

CNAMEsinhhoc.org
DNSSEC⚠️ Not signed
A103.130.217.58🇻🇳 WEBICO-AS-VN103.130.216.0/23 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
PTRh21758.tino.org
NSns1.zonedns.vn ⭐
A2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix
A64.176.84.220🇸🇬 AS-VULTR64.176.80.0/20 Vultr Assigned Prefix
PTRns1.zonedns.vn
NSns2.zonedns.vn
A2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix
A103.176.178.51🇻🇳 NHAN-HOA-AS-VN103.176.178.0/24 NINETECH-VN
NSns3.zonedns.vn
A2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN
A103.28.36.30🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN
NSns4.zonedns.vn ⚠️ Not in zone NS records
A2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN
A103.28.39.159🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN
MXsinhhoc.org ⭐
A103.130.217.58🇻🇳 WEBICO-AS-VN103.130.216.0/23 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
PTRh21758.tino.org
SOAns1.zonedns.vnroot@sinhhoc.org 2021-03-21 #7

sinhhoc.org

DNSSEC⚠️ Not signed
A103.130.217.58🇻🇳 WEBICO-AS-VN103.130.216.0/23 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
NSns1.zonedns.vn ⭐
NSns2.zonedns.vn
NSns3.zonedns.vn
NSns4.zonedns.vn ⚠️ Not in zone NS records
MXsinhhoc.org ⭐
SOAns1.zonedns.vnroot@sinhhoc.org 2021-03-21 #7

Previously MX for

sinhhoc.org

Same first word

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DNS History

2 records (1 active, 1 former)

201820192020202120222023202420252026A103.254.12.55CNAMEsinhhoc.org
○A103.254.12.552017-12-06 → 2017-12-06 · 3 obs
● 2017-12-06 14:25:32
○ 2026-03-26 15:15:10
○ 2026-04-13 20:22:24
●CNAMEsinhhoc.org2026-03-26 → 2026-04-13 · 2 obs
● 2026-03-26 15:15:10
● 2026-04-13 20:22:24

🔍 DNS Trace

Analysis

IP Addresses

mail.sinhhoc.org maps to IP address 103.130.217.58.

Other host names, for instance hightech.vn, maycongnghiep.org.vn, www.hightech.vn, h21758.tino.org and sinhhoc.org share IP numbers with mail.sinhhoc.org.

Name Servers

mail.sinhhoc.org is delegated to four name servers: ns1.zonedns.vn, ns2.zonedns.vn, ns3.zonedns.vn and ns4.zonedns.vn.

mail.sinhhoc.org at least partially shares name servers with other domains such as gpshanhtrinh.vn, thangnghiem.vn, hangtieudungnhapkhau.vn, faceebook.com.vn and thanhliemlab.com.

These name servers are commonly used with ns2008.nhanhoa.com.vn and ns2009.nhanhoa.com.vn.

Host names with two IP numbers:

ns1.zonedns.vn points to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 64.176.84.220.

ns2.zonedns.vn points to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 103.176.178.51.

ns3.zonedns.vn points to 2001:df1:3200::15 and 103.28.36.30.

ns4.zonedns.vn points to 2001:df1:3200::15 and 103.28.39.159.

Names pointing to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33: ns1.zonedns.vn and ns2.zonedns.vn.

Names pointing to 2001:df1:3200::15: ns3.zonedns.vn and ns4.zonedns.vn.

Mail Servers

mail.sinhhoc.org is handled by a single mail server, sinhhoc.org.

The mail server setup for mail.sinhhoc.org matches that of other domains, for instance sinhhoc.org.

sinhhoc.org points to one IP number: 103.130.217.58.