`api.onesys.vn`

	DNSSEC	⚠️ Not signed
	A	103.48.194.38^{🇻🇳 LVHN-AS-VN103.48.192.0/22 LVHN-VN}

`onesys.vn`

	DNSSEC	⚠️ Not signed
	A	210.245.32.147^{🇻🇳 FPT-AS-AP210.245.32.0/21 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
	NS	`ns1.pavietnam.vn` ⭐
	NS	`ns2.pavietnam.vn`
	NS	`nsbak.pavietnam.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`google-site-verification=7q8DZTA89_bvb-iFigSR6TTCcXUK4Bb2apTnZRZ2b_M`
	SOA	`ns1.pavietnam.vn`hostmaster@onesys.vn 2026-04-17 #11

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DNS History

1 record (1 active, 0 former)

●A103.48.194.382026-05-01 → 2026-05-14 · 2 obs

● 2026-05-01 16:49:08
● 2026-05-14 13:45:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
onesys.vn	ns1.pavietnam.vn, ns2.pavietnam.vn, nsbak.pavietnam.net	4 records

✅ Authoritative Response

Server:222.255.121.247

NS records: ns1.pavietnam.vn, ns2.pavietnam.vn, nsbak.pavietnam.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onesys.vn (unsigned zone)

⏱️ Timing

Total: 1660ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.48.194.38`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.pavietnam.vn, ns1.pavietnam.vn, ns2.pavietnam.vn...)

Analysis

IP Addresses

api.onesys.vn points to a single IP address: 103.48.194.38.

Other host names such as api-trithuc-app.oems.edu.vn, trithuc.oems.edu.vn, portal.oems.edu.vn, public.oems.edu.vn and lms.sedp.vn share IPs with api.onesys.vn.

api.onesys.vn - robtex.com

api.onesys.vn

onesys.vn