mail.dfm-engineering.com - robtex.com

mail.dfm-engineering.com

CNAMEhl-mail20.viettelidc.com.vn
DNSSEC⚠️ Not signed
A103.1.208.236🇻🇳 VTDC-AS-VN103.1.208.0/22 Proxy-registered route object
PTRhl-mail20.hosting.viettelidc.com.vn

dfm-engineering.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:19f3🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:86ee🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.25.243Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.134.238🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSguy.ns.cloudflare.com ⭐
NSkiki.ns.cloudflare.com
MXmx.viettelidc.com.vn ⭐
TXTgoogle-site-verification=qO6ObNJbTFBvVdVWw87rN26UJCxqVZ4bs6Ud3kMt3fc
TXTv=spf1 ip4:103.1.208.0/24 a mx -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.25.243, 172.67.134.238
IPv62606:4700:3033::6815:19f3, 2606:4700:3034::ac43:86ee
SOAguy.ns.cloudflare.comdns@cloudflare.com serial=2399380620

Previously MX for

dfm-engineering.com

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A217.16.3.212CNAMEhl-mail20.viettelidc.com.vn
○A217.16.3.2122015-06-07 → 2016-12-23 · 4 obs
● 2015-06-07 17:12:58
● 2016-12-23 14:12:10
○ 2026-03-22 19:32:28
○ 2026-03-22 19:32:30
●CNAMEhl-mail20.viettelidc.com.vn2026-03-22 → 2026-03-22 · 2 obs
● 2026-03-22 19:32:28
● 2026-03-22 19:32:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
dfm-engineering.comguy.ns.cloudflare.com, kiki.ns.cloudflare.com12 records

✅ Authoritative Response

Server: 108.162.193.173

NS records: guy.ns.cloudflare.com, kiki.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dfm-engineering.com (unsigned zone)

⏱️ Timing

Total: 88ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1hl-mail20.viettelidc.com.vn

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (guy.ns.cloudflare.com, guy.ns.cloudflare.com, guy.ns.cloudflare.com...)

Analysis

IP Addresses

mail.dfm-engineering.com points to a single IP: 103.1.208.236.

Other host names such as hl-mail20.viettelidc.com.vn and hl-mail20.hosting.viettelidc.com.vn share IP numbers with mail.dfm-engineering.com.