`cfc.edu.vn`

DNSSEC	⚠️ Not signed
A	157.66.46.25^{JUPITERMEDIA-VN157.66.46.0/23}
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	`ns3.dotvndns.vn`
		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`
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`
SOA	`ns1.dotvndns.vn`hostmaster@cfc.edu.vn 2025-09-10 #2

`edu.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=2018564748

Subdomains

www.cfc.edu.vn

Same first word

cfc.com.mx

cfc.de

cfc.com.cn

cfc.com.do

cfc.ru

cfc.lu

cfc.kz

cfc.org.nz

cfc.ee

cfc.com.au

cfc.me

cfc.cat

cfc.com

cfc.ch

cfc.ac.jp

cfc.cl

cfc.at

cfc.es

cfc.org.vn

cfc.fr

cfc.olsztyn.pl

cfc.k12.wi.us

cfc.vn

cfc.ca

cfc.re.it

cfc.org

cfc.nl

cfc.nfshost.com

cfc.co.nz

cfc.net.tw

cfc.org.uk

cfc.com.vn

cfc.com.ua

cfc.com.ec

cfc.org.br

cfc.pl

cfc.be

cfc.coop

cfc.by

cfc.it

cfc.rs.gov.br

cfc.pp.ua

cfc.se

cfc.net

cfc.ie

cfc.aero

cfc.kr

cfc.gov.kg

cfc.co.il

cfc.co.za

cfc.io

cfc.no

cfc.or.jp

cfc.dk

cfc.ro

cfc.gg

cfc.su

cfc.in

cfc.com.sg

cfc.info

cfc.fi

cfc.pt

cfc.si

cfc.jp

cfc.edu.vn

cfc.gob.mx

Similar names

ccf.com.ph

ccf.lu

ccf.ir

fcc.ro

ccf.com.cy

fcc.us

fcc.fr

ccf.gr

fcc.vn

ccf.net.au

ccf.sg

ccf.ie

fcc.ac.jp

ccf.com

fcc.se

ccf.ro

fcc.com.tr

fcc.capital

ccf.lv

fcc.cl

fcc.cz

fcc.lt

fcc.co.il

ccf.edu.pk

ccf.com.tw

fcc.am

fcc.bh

ccf.cn

ccf.cc

fcc.com.cn

ccf.tw

ccf.org

fcc.org

ccf.mx

fcc.veneto.it

fcc.com.ua

fcc.io

ccf.org.mo

fcc.ru

fcc.es

fcc.co.za

fcc.com

ccf.org.sg

ccf.fi

ccf.ca

ccf.cl

fcc.today

fcc.be

fcc.gov

ccf.org.tw

ccf.us

ccf.info

fcc.ch

ccf.fr

fcc.me

ccf.ch

fcc.co.th

fcc.org.br

ccf.hk

fcc.agency

fcc.sc.gov.br

fcc.hu

ccf.bank

fcc.it.com

ccf.sn

ccf.org.fj

fcc.report

ccf.tv

ccf.com.au

fcc.ca

ccf.brussels

DNS History

5 records (5 active, 0 former)

●NSns1.dotvndns.vn2026-04-30 → 2026-05-09 · 2 obs

● 2026-04-30 19:37:56
● 2026-05-09 18:36:26

●NSns2.dotvndns.vn2026-04-30 → 2026-05-09 · 2 obs

● 2026-04-30 19:37:56
● 2026-05-09 18:36:26

●NSns3.dotvndns.vn2026-04-30 → 2026-05-09 · 2 obs

● 2026-04-30 19:37:56
● 2026-05-09 18:36:26

●NSnsbak.dotvndns.com2026-04-30 → 2026-05-09 · 2 obs

● 2026-04-30 19:37:56
● 2026-05-09 18:36:26

●A157.66.46.252026-04-30 → 2026-05-09 · 2 obs

● 2026-04-30 19:37:56
● 2026-05-09 18:36:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
cfc.edu.vn	ns3.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, ns1.dotvndns.vn	-

✅ Authoritative Response

Server:112.213.89.22

NS records: ns3.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, ns1.dotvndns.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cfc.edu.vn (unsigned zone)

⏱️ Timing

Total: 1977ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.66.46.25`
NS	4	`ns2.dotvndns.vn, nsbak.dotvndns.com...`
SOA	1	`ns1.dotvndns.vn hostmaster.cfc.edu.vn`

Analysis

Hierarchy

cfc.edu.vn is a parent of www.cfc.edu.vn.

IP Addresses

cfc.edu.vn points to a single IP address: 157.66.46.25.

Other host names such as tiengtrunghoaviet.edu.vn and cfc.hvnh.edu.vn share IP numbers with cfc.edu.vn.

Name Servers

cfc.edu.vn is delegated to four name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn and ns3.dotvndns.vn.

At least part of the name servers for cfc.edu.vn are shared with other domains, for instance goladi.com.vn, luongquoi.vn, invoiceviet.vn, viet-ta.com and onapfushin.com.