hourofcode.vn - dns.ninja

`hourofcode.vn`

DNSSEC	⚠️ Not signed
A	103.75.187.19^{🇻🇳 VNPT-AS-VN103.75.184.0/22 Inet software one member company limited INETSOFT-VN}
NS	`ns-master.inet.vn` ⭐
		A	202.92.4.8^{🇻🇳 VNPT-AS-VN202.92.4.0/22 INET-VN}
NS	`ns1.inet.vn`
		A	2001:df7:ce00:1::7^{🇻🇳 VNPT-AS-VN2001:df7:ce00::/48 INETSOFT-VN Inet software one member company limited}
		A	202.92.4.25^{🇻🇳 VNPT-AS-VN202.92.4.0/22 INET-VN}
NS	`ns2.inet.vn`
		A	2401:5f80:2001:4::30^{🇻🇳 VTDC-AS-VN2401:5f80:2000::/36 VTDC-VN}
		A	210.211.99.38^{🇻🇳 VTDC-AS-VN210.211.99.0/24 Proxy-registered route object}
MX	`hourofcode-vn.mail.eo.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	`google-site-verification=C8235m9PaAC-gt3CRm5-3OiuzzATuMI6Zvs1G9n3lB8`
TXT	`MS=ms24791792`
TXT	`google-site-verification=e-UFHZ2Gly0mMH7U7Jvf_BeWWELddwUi-srmLRpXGMI`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns-master.inet.vn`postmaster@inet.vn 2015-07-28 #1

`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=2030936102

Subdomains

thuthuat.hourofcode.vn

scratch.hourofcode.vn

www.hourofcode.vn

Same first word

hourofcode.org.cn

hourofcode.co

hourofcode.org

hourofcode.net

hourofcode.co.za

hourofcode.us

hourofcode.cn

hourofcode.com

hourofcode.co.il

hourofcode.co.uk

hourofcode.vn

DNS History

11 records (5 active, 6 former)

●NSns-master.inet.vn2018-05-09 → 2026-06-27 · 2 obs

● 2018-05-09 10:49:44
● 2026-06-27 20:40:54

●NSns1.inet.vn2018-05-09 → 2026-06-27 · 2 obs

● 2018-05-09 10:49:44
● 2026-06-27 20:40:54

●NSns2.inet.vn2018-05-09 → 2026-06-27 · 2 obs

● 2018-05-09 10:49:44
● 2026-06-27 20:40:54

○MXalt1.aspmx.l.google.com2018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

○MXalt2.aspmx.l.google.com2018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

○MXalt3.aspmx.l.google.com2018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

○MXalt4.aspmx.l.google.com2018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

○MXaspmx.l.google.com2018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

●MXhourofcode-vn.mail.eo.outlook.com2026-03-08 → 2026-06-27 · 3 obs

○ 2018-05-09 10:49:44
● 2026-03-08 00:28:04
● 2026-06-27 20:40:54

●A103.75.187.192026-03-08 → 2026-06-27 · 6 obs

○ 2018-05-09 10:49:44
● 2026-03-08 00:28:04
● 2026-05-01 05:15:28
○ 2026-05-01 06:27:28
● 2026-05-01 07:47:28
● 2026-06-27 20:40:54

○A115.84.182.2102018-05-09 → 2018-05-09 · 3 obs

● 2018-05-09 10:49:44
○ 2026-03-08 00:28:04
○ 2026-06-27 20:40:54

🔍 DNS Trace

Analysis

Hierarchy

thuthuat.hourofcode.vn, scratch.hourofcode.vn and www.hourofcode.vn each fall under the parent domain hourofcode.vn.

IP Addresses

hourofcode.vn resolves to just one IP address, 103.75.187.19.

Two other host names, along with build-www.vmaauto.vn, mail.batdongsanmoonlight.com.vn and phongthuynhatlong.vn, also share IP numbers with hourofcode.vn.

Name Servers

hourofcode.vn carries NS records delegating to ns-master.inet.vn, ns1.inet.vn and ns2.inet.vn.

hourofcode.vn partially shares its NS delegation with several other domains, including kdu.edu.vn, viecmientrung.vn, viglacera-exim.vn and two others.

These name servers often co-occur with the name servers ns3.inet.vn.

Host names that have two IP addresses:

ns1.inet.vn resolves to two addresses: 202.92.4.25 and 2001:df7:ce00:1::7.

ns2.inet.vn resolves to two addresses: 210.211.99.38 and 2401:5f80:2001:4::30.

Host names that point to one IP address:

The hostname ns-master.inet.vn resolves to 202.92.4.8.

Mail Servers

The sole mail server for hourofcode.vn is hourofcode-vn.mail.eo.outlook.com.

With 6 IP addresses total, hourofcode-vn.mail.eo.outlook.com resolves to 52.101.124.117, 52.101.137.0, 52.101.157.80 and 3 others.