dff.vn - robtex.com
dff.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.170.123.226🇻🇳 NHAN-HOA-AS-VN103.170.123.0/24 NHANHOAGROUP-VN | ||||||
| NS | ns1.zonedns.vn ⭐ | ||||||
| A | 2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix | ||||||
| A | 64.176.84.220🇸🇬 AS-VULTR64.176.80.0/20 Vultr Assigned Prefix | ||||||
| PTR | ns1.zonedns.vn | ||||||
| NS | ns2.zonedns.vn | ||||||
| A | 2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix | ||||||
| A | 103.176.178.51🇻🇳 NHAN-HOA-AS-VN103.176.178.0/24 NINETECH-VN | ||||||
| NS | ns3.zonedns.vn | ||||||
| A | 2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN | ||||||
| A | 103.28.36.30🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN | ||||||
| NS | ns4.zonedns.vn | ||||||
| A | 2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN | ||||||
| A | 103.28.39.159🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN | ||||||
| MX | mx.umailsmtp.com ⭐ | ||||||
| TXT | v=spf1 include:dn(0x736578)it.com include:_spf.umailsmtp.com -all | ||||||
| SOA | ns1.zonedns.vnroot@dff.vn 2026-05-04 #1 | ||||||
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=2030753415 | ||||||
Previously MX for
dff.vn |
Subdomains
Same first word
Similar names
DNS History
12 records (6 active, 6 former)
●NSns1.zonedns.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 17:55:04
●NSns2.zonedns.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 17:55:04
●NSns3.zonedns.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 17:55:04
●NSns4.zonedns.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 17:55:04
○MXalt1.aspmx.l.google.com2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
○MXalt2.aspmx.l.google.com2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
○MXalt3.aspmx.l.google.com2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
○MXalt4.aspmx.l.google.com2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
○MXaspmx.l.google.com2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
○MXdff.vn2026-05-01 → 2026-05-01 · 4 obs
● 2026-05-01 13:03:32
○ 2026-05-05 20:24:14
○ 2026-05-09 17:55:04
●MXmx.umailsmtp.com2026-05-05 → 2026-05-09 · 3 obs
● 2026-05-05 20:24:14
● 2026-05-09 17:55:04
●A103.170.123.2262026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 17:55:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | h.dns-servers.vn, b.dns-servers.vn, f.dns-servers.vn, g.dns-servers.vn... | - |
| dff.vn | ns1.zonedns.vn, ns3.zonedns.vn, ns2.zonedns.vn, ns4.zonedns.vn | - |
✅ Authoritative Response
Server:64.176.84.220
NS records: ns1.zonedns.vn, ns3.zonedns.vn, ns2.zonedns.vn, ns4.zonedns.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dff.vn (unsigned zone)
⏱️ Timing
Total: 2397ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.170.123.226 |
| NS | 4 | ns3.zonedns.vn, ns4.zonedns.vn... |
| MX | 1 | mx.umailsmtp.com (pri: 10) |
| TXT | 1 | v=spf1 include:dn(0x736578)it.com include:_spf. |
| SOA | 1 | ns1.zonedns.vn root.dff.vn |
Analysis
Hierarchy
dff.vn is a parent of thumb.dff.vn, img.dff.vn, media.dff.vn and cms.dff.vn.
IP Addresses
dff.vn resolves to one IP number: 103.170.123.226.
Other host names, for instance media.dff.vn, cms.dff.vn, thumb.dff.vn and img.dff.vn share IP numbers with dff.vn.
Name Servers
dff.vn is delegated to four name servers: ns1.zonedns.vn, ns2.zonedns.vn, ns3.zonedns.vn and ns4.zonedns.vn.
dff.vn at least partially shares name servers with other domains, for instance esportsvn.com.vn, mothucthanhcong.com, ateliersaigon.com, namdungmedical.com and merita.com.vn.
These name servers are commonly used alongside ns2008.nhanhoa.com.vn and ns2009.nhanhoa.com.vn.
Hostnames with two IP numbers:
Host ns1.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 64.176.84.220.
Host ns2.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 103.176.178.51.
Host ns3.zonedns.vn points to: 2001:df1:3200::15 and 103.28.36.30.
Host ns4.zonedns.vn points to: 2001:df1:3200::15 and 103.28.39.159.
Names pointing to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33: ns1.zonedns.vn and ns2.zonedns.vn.
Names pointing to 2001:df1:3200::15: ns3.zonedns.vn and ns4.zonedns.vn.
Mail Servers
dff.vn is handled by a single mail server, mx.umailsmtp.com.
dff.vn shares the same mail server setup as other domains, for instance hdpholdings.com.vn, itec.vn, benhvienphoinghean.com, seatrade.vn and greenholdingsport.com.