`puzzle.htvtools.com`

	DNSSEC	⚠️ Not signed
	A	103.131.74.6^{🇻🇳 SUPERDATA103.131.74.0/24 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}

`htvtools.com`

	DNSSEC	⚠️ Not signed
	A	210.245.8.140^{🇻🇳 FPT-AS-AP210.245.8.0/21 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
	NS	`nsbak.dotvndns.com` ⭐
	NS	`ns1.dotvndns.vn`
	NS	`ns2.dotvndns.vn`
	MX	`mail25510.maychuemail.com` ⭐
	MX	`mx25510.maychuemail.net`⁽¹⁰⁾
	TXT	`v=spf1 a mx ip4:103.252.255.10 ~all`
	TXT	`v=spf1 a mx include:spf.maychuemail.com ip4:103.252.255.10 ~all`
	TXT	`v=msv1 t=14068eb124c75d44972fe92672746e`
	SOA	`nsbak.dotvndns.com`hostmaster@htvtools.com 2025-10-29 #8

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DNS History

3 records (1 active, 2 former)

●A103.131.74.62026-02-23 → 2026-04-13 · 3 obs

○ 2016-09-15 19:24:48
● 2026-02-23 06:49:44
● 2026-04-13 01:44:06

○A112.213.89.152016-04-02 → 2016-09-15 · 5 obs

○ 2016-01-02 12:29:00
● 2016-04-02 15:11:00
● 2016-09-15 19:24:48
○ 2026-02-23 06:49:44
○ 2026-04-13 01:44:06

○A210.245.95.212015-05-30 → 2016-01-02 · 4 obs

● 2015-05-30 04:38:06
● 2016-01-02 12:29:00
○ 2016-04-02 15:11:00
○ 2026-04-13 01:44:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
htvtools.com	nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn	2 records

✅ 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 htvtools.com (unsigned zone)

⏱️ Timing

Total: 1395ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.131.74.6`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (nsbak.dotvndns.com, nsbak.dotvndns.com)

Analysis

IP Addresses

puzzle.htvtools.com points to IP number 103.131.74.6.

For instance, other host names bluewireless.htvtools.com, s3.htvtools.com, mail.vitinhmanhhung.vn, au.htvtools.com and orient-corp.com share IP numbers with puzzle.htvtools.com.

puzzle.htvtools.com - robtex.com