`rtccd.org.vn`

DNSSEC	⚠️ Not signed
A	103.237.147.37^{🇻🇳 LVSOFT-AS-VN103.237.144.0/22 LVSOFT-VN}
NS	`ns1.pavietnam.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	`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	`rtccd-org-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	`google-site-verification=htlRdw4y6OSZKyFBIM2MvwIDfNN_onYzxKRLvdUcT_M`
SOA	`ns1.pavietnam.vn`hostmaster@rtccd.org.vn 2025-10-09 #9

`org.vn`

	DNSSEC	⚠️ Not signed
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`b.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`c.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`d.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`e.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`f.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`g.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`h.dns-servers.vn` ⚠️ Not in parent delegation
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2017789946

WOT: SAFE (60/100)
WOT: SAFE (99/100)

Subdomains

www.rtccd.org.vn

mail.rtccd.org.vn

Same first word

rtccd.org.vn

Similar names

crcdt.com

ccrdt.com

tdcrc.com

rtcdc.com

trcdc.com

ctrcd.org

tccrd.com

ccdrt.com

trcdc.org

dctrc.com

dctcr.com

rcctd.com

dtrcc.com

crdtc.org

crtdc.com

drctc.org

ccrdt.org

tcrcd.org

rcdtc.com

dccrt.com

ctrdc.com.cn

ctrdc.com

tcrcd.net

trdcc.net

dcctr.com

drctc.com

tcrcd.com

crtdc.org.cn

drtcc.com

rdctc.com

drcct.com

dtrcc.cn

cctdr.com

drtcc.com.au

ccdtr.com

DNS History

11 records (6 active, 5 former)

○NSdns1.fpt.vn2018-11-02 → 2018-11-02 · 3 obs

● 2018-11-02 02:24:06
○ 2026-05-01 07:28:12
○ 2026-05-10 16:50:16

○NSdns11.fpt.vn2018-11-02 → 2018-11-02 · 3 obs

● 2018-11-02 02:24:06
○ 2026-05-01 07:28:12
○ 2026-05-10 16:50:16

○NSdns12.fpt.vn2018-11-02 → 2018-11-02 · 3 obs

● 2018-11-02 02:24:06
○ 2026-05-01 07:28:12
○ 2026-05-10 16:50:16

○NSdns2.fpt.vn2018-11-02 → 2018-11-02 · 3 obs

● 2018-11-02 02:24:06
○ 2026-05-01 07:28:12
○ 2026-05-10 16:50:16

○NSisp-dns1.fpt.vn2018-11-02 → 2018-11-02 · 3 obs

● 2018-11-02 02:24:06
○ 2026-05-01 07:28:12
○ 2026-05-10 16:50:16

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

○ 2018-11-02 02:24:06
● 2026-05-01 07:28:12
● 2026-05-10 16:50:16

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

○ 2018-11-02 02:24:06
● 2026-05-01 07:28:12
● 2026-05-10 16:50:16

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

○ 2018-11-02 02:24:06
● 2026-05-01 07:28:12
● 2026-05-10 16:50:16

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

○ 2018-11-02 02:24:06
● 2026-05-01 07:28:12
● 2026-05-10 16:50:16

●MXrtccd-org-vn.mail.protection.outlook.com2018-11-02 → 2026-05-10 · 2 obs

● 2018-11-02 02:24:06
● 2026-05-10 16:50:16

●A103.237.147.372018-11-02 → 2026-05-10 · 2 obs

● 2018-11-02 02:24:06
● 2026-05-10 16:50:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	b.dns-servers.vn, g.dns-servers.vn, h.dns-servers.vn, f.dns-servers.vn...	-
rtccd.org.vn	nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn	-

✅ Authoritative Response

Server:112.213.89.3

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtccd.org.vn (unsigned zone)

⏱️ Timing

Total: 2218ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.237.147.37`
NS	3	`ns2.dotvndns.vn, ns1.dotvndns.vn...`
MX	1	`rtccd-org-vn.mail.protection.outlook.com`
TXT	2	`v=spf1 include:spf.protection.outlook.co, google-site-verification=htlRdw4y6OSZKyF`
SOA	1	`ns1.pavietnam.vn hostmaster.rtccd.org.vn`