`api.ols.com.vn`

	DNSSEC	⚠️ Not signed
	A	103.74.120.35^{🇻🇳 BKNS-AS-VN103.74.120.0/23 BKNS-VN}

`ols.com.vn`

	DNSSEC	⚠️ Not signed
	A	103.74.120.35^{🇻🇳 BKNS-AS-VN103.74.120.0/23 BKNS-VN}
	NS	`razvan.ns.cloudflare.com` ⭐
	NS	`selah.ns.cloudflare.com`
	MX	`mx1.larksuite.com` ⭐
	MX	`mx2.larksuite.com`⁽⁵⁾
	MX	`mx3.larksuite.com`⁽¹⁰⁾
	TXT	`v=spf1 +include:spf.onlarksuite.com -all`
	TXT	`verification-code-site-App_lark=q3yDmh05mZQpbBvCenFY`
	SOA	`razvan.ns.cloudflare.com`dns@cloudflare.com serial=2403700504

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DNS History

1 record (1 active, 0 former)

●A103.74.120.352026-05-01 → 2026-05-12 · 2 obs

● 2026-05-01 17:18:12
● 2026-05-12 01:13:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
ols.com.vn	selah.ns.cloudflare.com, razvan.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.21

NS records: selah.ns.cloudflare.com, razvan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ols.com.vn (unsigned zone)

⏱️ Timing

Total: 1356ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.74.120.35`

Analysis

IP Addresses

api.ols.com.vn points to a single IP: 103.74.120.35.

Other host names, for instance www.benhviennoitiet.vn, admin.ols.com.vn, benhviennoitiet.vn, www.kiemdichbiengioi.vn and orenda.vn share IP numbers with api.ols.com.vn.

api.ols.com.vn - robtex.com

api.ols.com.vn

ols.com.vn