mail.extremezero.vn - robtex.com

mail.extremezero.vn

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:9b34🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:5902🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.2Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.155.52🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.2, 172.67.155.52
IPv6 hints2606:4700:3032::ac43:9b34, 2606:4700:3037::6815:5902
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=179, name=cloudflare-ech.com

extremezero.vn

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:9b34🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:5902🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.2Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.155.52🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnora.ns.cloudflare.com ⭐
NSsage.ns.cloudflare.com
MXmail.extremezero.vn ⭐
TXTv=spf1 a mx ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.2, 172.67.155.52
IPv6 hints2606:4700:3032::ac43:9b34, 2606:4700:3037::6815:5902
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=179, name=cloudflare-ech.com
SOAnora.ns.cloudflare.comdns@cloudflare.com serial=2402993696

MX for

extremezero.vn

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DNS History

4 records (4 active, 0 former)

A104.21.89.2172.67.155.522606:4700:3032::ac43:9b342606:4700:3037::6815:5902
●A104.21.89.22026-05-12 → 2026-05-15 · 2 obs
● 2026-05-12 20:15:10
● 2026-05-15 14:13:28
●A172.67.155.522026-05-12 → 2026-05-15 · 2 obs
● 2026-05-12 20:15:10
● 2026-05-15 14:13:28
●A2606:4700:3032::ac43:9b342026-05-12 → 2026-05-15 · 2 obs
● 2026-05-12 20:15:10
● 2026-05-15 14:13:28
●A2606:4700:3037::6815:59022026-05-12 → 2026-05-15 · 2 obs
● 2026-05-12 20:15:10
● 2026-05-15 14:13:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...-
extremezero.vnnora.ns.cloudflare.com, sage.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.213

NS records: nora.ns.cloudflare.com, sage.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for extremezero.vn (unsigned zone)

⏱️ Timing

Total: 1369ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.155.52, 104.21.89.2
AAAA22606:4700:3037::6815:5902, 2606:4700:3032::ac43:9b34
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

Mail Server Role

mail.extremezero.vn handles mail for extremezero.vn.

IP Addresses

mail.extremezero.vn maps to four IP numbers: 2606:4700:3032::ac43:9b34, 2606:4700:3037::6815:5902, 104.21.89.2 and 172.67.155.52.

Other host names such as 288.mikijosmixup.com, aififi.com, vagsfd.com, sunguardglass.rs and 63b4.com share IPs with mail.extremezero.vn.