`kb-sync.com`

DNSSEC	⚠️ Not signed
A	103.195.240.26^{🇻🇳 TOCDOSOVN-AS-VN103.195.240.0/22 TOCDOSO-VN}
		PTR	`no-ptr-record.unixnds.net`
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`
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`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c0d::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dl-in-f27.1e100.net`
		A	142.251.2.26^{🇺🇸 Google142.251.2.0/24}
			PTR	`dl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.27^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:1015::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f26.1e100.net`
		A	172.253.135.26^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4001:c21::1b^{🇩🇪 Google2a00:1450:4001::/48}
			PTR	`lcfrai-in-f27.1e100.net`
		A	142.251.127.26^{🇺🇸 Google142.251.127.0/24}
			PTR	`lcfrai-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.27^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f27.1e100.net`
TXT	`google-site-verification=w04MbBhZb6wwz3UBHHAgq5awnUI5o1NpJdcpFLaL5is`
TXT	`v=spf1 include:_spf.google.com ip4:210.245.84.99 ip4:210.245.87.63 ~all`
SOA	`nsbak.dotvndns.com`hostmaster@kb-sync.com 2026-03-16 #18

`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=1774473247

Same first word

kb-sync.com

Similar names

cbk-syn.synology.me

DNS History

10 records (10 active, 0 former)

●NSns1.dotvndns.vn2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●NSns2.dotvndns.vn2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●NSns3.dotvndns.vn2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●NSnsbak.dotvndns.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●MXalt1.aspmx.l.google.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●MXalt2.aspmx.l.google.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●MXalt3.aspmx.l.google.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●MXalt4.aspmx.l.google.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●MXaspmx.l.google.com2026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

●A103.195.240.262026-02-20 → 2026-03-25 · 2 obs

● 2026-02-20 02:54:54
● 2026-03-25 21:14:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, k.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net...	-
kb-sync.com	nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn	2 records

✅ Authoritative Response

Server:112.213.89.22

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kb-sync.com (unsigned zone)

⏱️ Timing

Total: 1478ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.195.240.26`
NS	4	`nsbak.dotvndns.com, ns1.dotvndns.vn...`
MX	5	`alt3.aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 5)...`
TXT	2	`google-site-verification=w04MbBhZb6wwz3U, v=spf1 include:_spf.google.com ip4:210.2`
SOA	1	`nsbak.dotvndns.com hostmaster.kb-sync.co`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

kb-sync.com points to a single IP: 103.195.240.26.

Other host names, for instance data.123vietnamese.com, tamsoa.com, 123vietnamese.com, www.123vietnamese.com and www.tamsoa.com share IP numbers with kb-sync.com.

Name Servers

kb-sync.com is delegated to four name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn and ns3.dotvndns.vn.

kb-sync.com at least partially shares its name servers with other domains, for instance giabaojsc.vn, vnns.vn, baohiembuudien.com.vn, booking247.com.vn and fsw.com.vn.