smartfocus.vn - robtex.com
smartfocus.vn
vn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn | ||||||
| NS | b.dns-servers.vn | ||||||
| NS | c.dns-servers.vn | ||||||
| NS | d.dns-servers.vn | ||||||
| NS | e.dns-servers.vn | ||||||
| NS | f.dns-servers.vn | ||||||
| NS | g.dns-servers.vn | ||||||
| NS | h.dns-servers.vn | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2030743651 | ||||||
Subdomains
www.smartfocus.vn |
Same first word
smartfocus.be |
smartfocus.net |
smartfocus.com |
smartfocus.com.my |
smartfocus.cn |
smartfocus.ru |
smartfocus.us |
smartfocus.co |
smartfocus.co.uk |
smartfocus.de |
smartfocus.com.br |
smartfocus.vn |
smartfocus.info |
Similar names
sumfactors.co.uk |
marcussoft.com |
framscouts.org.uk |
focussmart.com |
sumfactors.com |
marcussoft.se |
scatforums.com |
catsforums.com |
scoutsfarm.com |
focussmart.uk |
DNS History
5 records (5 active, 0 former)
●MXsmtp.google.com2026-05-01 → 2026-05-07 · 2 obs
● 2026-05-07 13:36:28
●A163.44.206.282026-05-01 → 2026-05-07 · 2 obs
● 2026-05-07 13:36:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | c.dns-servers.vn, f.dns-servers.vn, e.dns-servers.vn, a.dns-servers.vn... | - |
| smartfocus.vn | ns-b1.tenten.vn, ns-b2.tenten.vn, ns-b3.tenten.vn | - |
✅ Authoritative Response
Server:137.59.104.67
NS records: ns-b1.tenten.vn, ns-b2.tenten.vn, ns-b3.tenten.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for smartfocus.vn (unsigned zone)
⏱️ Timing
Total: 4518ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 163.44.206.28 |
| NS | 3 | ns-b3.tenten.vn, ns-b1.tenten.vn... |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 2 | google-site-verification=yn327fS84mAc4H3, v=spf1 mx a ip4:163.44.206.28 ~all |
| SOA | 1 | ns-b3.tenten.vn noreply.tenten.vn |
Analysis
Hierarchy
smartfocus.vn is the parent of www.smartfocus.vn.
IP Addresses
smartfocus.vn resolves to a single IP: 163.44.206.28.
Name Servers
smartfocus.vn delegates to three name servers: ns-b1.tenten.vn, ns-b2.tenten.vn and ns-b3.tenten.vn.
smartfocus.vn shares some name servers with other domains, for example smag.vn, reviv.com.vn, hoanghuy-commerce.vn, ome.com.vn and fuliwon.com.vn.
Host names with two IP numbers:
ns-b1.tenten.vn: 2404:f080:1101:321:a150:95:110:1230 and 137.59.104.67
ns-b2.tenten.vn: 2404:f080:1101:321:a150:95:110:1231 and 137.59.104.68
ns-b3.tenten.vn: 2404:f080:1101:321:a150:95:110:1232 and 163.44.207.21
Mail Servers
smartfocus.vn is handled by a single mail server, smtp.google.com.
smartfocus.vn shares the mail server setup with other domains, for example meritoempreendimentos.com.br, nezedi.com, hgmep.com, gamerepublic.net and all-p.jp.
smartfocus.vn shares some mail servers with other domains, at least partially; for instance darkwood.net, drysruhs.edu.in, evfc.org, institutosanpatricio.com and netprintship.com.
smtp.google.com maps to nine IP numbers: 2607:f8b0:4004:c17::1a, 2607:f8b0:4004:c17::1b, 2607:f8b0:4004:c19::1a, 2607:f8b0:4004:c19::1b, 142.251.16.26, 142.251.16.27, 142.251.111.26, 142.251.111.27 and 142.251.163.27.