`mail.onlinesoft.vn`

DNSSEC	⚠️ Not signed
A	149.28.152.62^{🇸🇬 AS-VULTR149.28.128.0/19 Vultr Assigned Prefix}
		PTR	`cloud2.sosovn.com`

`onlinesoft.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:3bb0^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:b605^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.59.176^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.182.5^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`angela.ns.cloudflare.com` ⭐
NS	`todd.ns.cloudflare.com`
MX	`_dc-mx.884b4a0dd889.onlinesoft.vn` ⭐
TXT	`v=spf1 a mx ip4:149.28.152.62 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.59.176, 172.67.182.5
		IPv6 hints	2606:4700:3032::6815:3bb0, 2606:4700:3034::ac43:b605
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=209, name=cloudflare-ech.com
SOA	`angela.ns.cloudflare.com`dns@cloudflare.com serial=2402528695

PTR for

48.37.132.221.in-addr.arpa

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DNS History

3 records (1 active, 2 former)

●A149.28.152.622026-02-23 → 2026-05-14 · 3 obs

○ 2016-07-24 17:20:26
● 2026-02-23 15:40:52
● 2026-05-14 05:48:26

○A209.126.69.142016-04-03 → 2016-07-24 · 5 obs

○ 2016-01-15 13:04:48
● 2016-04-03 05:49:16
● 2016-07-24 17:20:26
○ 2026-02-23 15:40:52
○ 2026-05-14 05:48:26

○A209.126.74.1632015-06-14 → 2016-01-15 · 4 obs

● 2015-06-14 18:18:10
● 2016-01-15 13:04:48
○ 2016-04-03 05:49:16
○ 2026-05-14 05:48:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	f.dns-servers.vn, b.dns-servers.vn, a.dns-servers.vn, d.dns-servers.vn...	-
onlinesoft.vn	todd.ns.cloudflare.com, angela.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.146

NS records: todd.ns.cloudflare.com, angela.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onlinesoft.vn (unsigned zone)

⏱️ Timing

Total: 1274ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`149.28.152.62`

Analysis

IP Addresses

mail.onlinesoft.vn points to a single IP number: 149.28.152.62.

Other host names, for instance ns2.sosovn.com, cloud2.sosovn.com, ns3.sosovn.com, mail.ifvex.com and mail.smartcontent.me share IP numbers with mail.onlinesoft.vn.

mail.onlinesoft.vn - robtex.com