`chothuephonghoc.net`

DNSSEC	⚠️ Not signed
A	103.48.84.40^{🇻🇳 LVHN-AS-VN103.48.84.0/24 LVHN-VN}
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`
SOA	`nsbak.pavietnam.net`hostmaster@chothuephonghoc.net 2024-06-22 #2

`net`

	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=1778576306

Same first word

chothuephonghoc.net

DNS History

13 records (4 active, 9 former)

○NSdns11.parkpage.foundationapi.com2015-06-08 → 2015-06-08 · 3 obs

● 2015-06-08 06:22:48
○ 2015-10-29 11:08:18
○ 2026-05-12 09:26:32

○NSdns12.parkpage.foundationapi.com2015-06-08 → 2015-06-08 · 3 obs

● 2015-06-08 06:22:48
○ 2015-10-29 11:08:18
○ 2026-05-12 09:26:32

○NSdns9.parkpage.foundationapi.com2015-06-08 → 2015-06-08 · 3 obs

● 2015-06-08 06:22:48
○ 2015-10-29 11:08:18
○ 2026-05-12 09:26:32

●NSns1.pavietnam.vn2026-05-11 → 2026-05-12 · 3 obs

○ 2017-10-09 07:36:46
● 2026-05-11 22:09:12
● 2026-05-12 09:26:32

○NSns1.tenten.vn2016-01-20 → 2017-10-09 · 5 obs

○ 2015-10-29 11:08:18
● 2016-01-20 00:05:00
● 2017-10-09 07:36:46
○ 2026-05-11 22:09:12
○ 2026-05-12 09:26:32

○NSns1.tenten.vn.chothuephonghoc.net2016-01-20 → 2017-10-09 · 5 obs

○ 2015-10-29 11:08:18
● 2016-01-20 00:05:00
● 2017-10-09 07:36:46
○ 2026-05-11 22:09:12
○ 2026-05-12 09:26:32

●NSns2.pavietnam.vn2026-05-11 → 2026-05-12 · 3 obs

○ 2017-10-09 07:36:46
● 2026-05-11 22:09:12
● 2026-05-12 09:26:32

○NSns2.tenten.vn2016-01-20 → 2017-10-09 · 5 obs

○ 2015-10-29 11:08:18
● 2016-01-20 00:05:00
● 2017-10-09 07:36:46
○ 2026-05-11 22:09:12
○ 2026-05-12 09:26:32

○NSns3.tenten.vn2016-01-20 → 2017-10-09 · 5 obs

○ 2015-10-29 11:08:18
● 2016-01-20 00:05:00
● 2017-10-09 07:36:46
○ 2026-05-11 22:09:12
○ 2026-05-12 09:26:32

●NSnsbak.pavietnam.net2026-05-11 → 2026-05-12 · 3 obs

○ 2017-10-09 07:36:46
● 2026-05-11 22:09:12
● 2026-05-12 09:26:32

●A103.48.84.402026-05-11 → 2026-05-12 · 3 obs

○ 2017-10-09 07:36:46
● 2026-05-11 22:09:12
● 2026-05-12 09:26:32

○A209.99.40.2222015-06-08 → 2015-06-08 · 3 obs

● 2015-06-08 06:22:48
○ 2017-10-09 07:36:46
○ 2026-05-12 09:26:32

○A209.99.40.2232015-06-08 → 2015-06-08 · 3 obs

● 2015-06-08 06:22:48
○ 2015-10-29 11:08:18
○ 2026-05-12 09:26:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	j.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net...	-
chothuephonghoc.net	nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn	2 records

✅ 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 chothuephonghoc.net (unsigned zone)

⏱️ Timing

Total: 4191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.48.84.40`
NS	3	`ns2.pavietnam.vn, ns1.pavietnam.vn...`
SOA	1	`nsbak.pavietnam.net hostmaster.chothueph`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (nsbak.pavietnam.net, nsbak.pavietnam.net)

Analysis

IP Addresses

chothuephonghoc.net points to a single IP: 103.48.84.40.

Other host names, for instance taosv.allplus.vn, suaonaka.vn, thuongmaimuasam.com, sieuthisuckhoegiadinh.com and allplus.vn share IP numbers with chothuephonghoc.net.

Name Servers

chothuephonghoc.net is delegated to three name servers: nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

chothuephonghoc.net at least partially shares its name servers with other domains, for instance ttgdtxcamau.edu.vn, inetcenter.vn, agsports.com.vn, laothuangia.edu.vn and daotaodienvienvalongtieng.vn.

these name servers are commonly used together with nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn and ns3.dotvndns.vn.

Host names with two IP numbers:

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.

chothuephonghoc.net - robtex.com