`webyduoc.com`

DNSSEC	⚠️ Not signed
NS	`nsbak.pavietnam.net` ⭐
		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`
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	`ns2.pavietnam.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`
MX	`mail.webyduoc.com` ⭐
TXT	`v=spf1 a mx ~all`
SOA	`nsbak.pavietnam.net`hostmaster@webyduoc.com 2025-01-14 #11

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774383937

Subdomains

mail.webyduoc.com

Same first word

webyduoc.com

DNS History

8 records (4 active, 4 former)

○NSns1.dotvndns.vn2015-06-19 → 2017-04-24 · 6 obs

● 2015-06-19 08:57:38
● 2015-11-19 15:49:54
○ 2016-02-26 04:02:14
● 2016-08-09 22:19:28
● 2017-04-24 06:33:58
○ 2026-03-24 20:33:50

●NSns1.pavietnam.vn2016-02-26 → 2026-03-24 · 5 obs

○ 2015-11-19 15:49:54
● 2016-02-26 04:02:14
○ 2016-08-09 22:19:28
○ 2017-04-24 06:33:58
● 2026-03-24 20:33:50

○NSns2.dotvndns.vn2015-06-19 → 2017-04-24 · 6 obs

● 2015-06-19 08:57:38
● 2015-11-19 15:49:54
○ 2016-02-26 04:02:14
● 2016-08-09 22:19:28
● 2017-04-24 06:33:58
○ 2026-03-24 20:33:50

●NSns2.pavietnam.vn2016-02-26 → 2026-03-24 · 5 obs

○ 2015-11-19 15:49:54
● 2016-02-26 04:02:14
○ 2016-08-09 22:19:28
○ 2017-04-24 06:33:58
● 2026-03-24 20:33:50

●NSnsbak.pavietnam.net2026-03-24 → 2026-03-24 · 2 obs

○ 2017-04-24 06:33:58
● 2026-03-24 20:33:50

●MXmail.webyduoc.com2015-06-19 → 2026-03-24 · 2 obs

● 2015-06-19 08:57:38
● 2026-03-24 20:33:50

○A112.213.89.32015-06-19 → 2015-06-19 · 3 obs

● 2015-06-19 08:57:38
○ 2015-11-19 15:49:54
○ 2026-03-24 20:33:50

○A173.236.72.352015-11-19 → 2017-04-24 · 4 obs

○ 2015-06-19 08:57:38
● 2015-11-19 15:49:54
● 2017-04-24 06:33:58
○ 2026-03-24 20:33:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net...	-
webyduoc.com	nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn	-

✅ Authoritative Response

Server:112.213.89.22

NS records: nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for webyduoc.com (unsigned zone)

⏱️ Timing

Total: 2059ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`ns2.pavietnam.vn, ns1.pavietnam.vn...`
MX	1	`mail.webyduoc.com (pri: 10)`
TXT	1	`v=spf1 a mx ~all`
SOA	1	`nsbak.pavietnam.net hostmaster.webyduoc.`

Analysis

Hierarchy

webyduoc.com is a parent of mail.webyduoc.com.

Name Servers

The delegation for webyduoc.com is handled by three name servers: nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

webyduoc.com at least partially shares name servers with other domains, for instance cuoihoihoinghi.com, timbus.vn, winehlc.com, thuhien.com.vn and goodhealth.com.vn.

These name servers are often used together with ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, nsbak.pavietnam.vn and dnsbak.pavietnam.vn.

Two IP numbers per host:

nsbak.pavietnam.net points to 2406:9c80::9000:302 and 112.213.89.22.

ns1.pavietnam.vn points to 2406:9c80::66 and 112.213.89.3.

ns2.pavietnam.vn points to 2406:9c80::9000:111 and 222.255.121.247.

Mail Servers

webyduoc.com is handled by a single mail server, mail.webyduoc.com.

webyduoc.com - robtex.com

webyduoc.com

com