`polaredu.vn`

DNSSEC	⚠️ Not signed
A	103.221.222.62^{🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN}
NS	`ns-a5.cloudnetvn.com` ⭐ ⚠️ Not in parent delegation
		A	2404:f080:1101:310::53^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
		A	150.95.19.148^{🇻🇳 GMO-ZCOM-AS-VN150.95.16.0/22 RUNSYSTEM-VN}
			PTR	`v150-95-19-148.a001.m.han1.static.cnode.io`
NS	`ns-a1.cloud.z.com` ⚠️ Not in zone NS records
		A	2404:f080:1101:310::53^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
		A	150.95.19.148^{🇻🇳 GMO-ZCOM-AS-VN150.95.16.0/22 RUNSYSTEM-VN}
			PTR	`v150-95-19-148.a001.m.han1.static.cnode.io`
NS	`ns-a1.cloudnetvn.com` ⚠️ Not in parent delegation
		A	2400:8500:3000::88^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`ns-a1.cnode.io`
		A	157.7.33.88^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`ns-a1.cnode.io`
NS	`ns-a3.cloud.z.com` ⚠️ Not in zone NS records
		A	2404:f080:1101:310::53^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
		A	150.95.19.148^{🇻🇳 GMO-ZCOM-AS-VN150.95.16.0/22 RUNSYSTEM-VN}
			PTR	`v150-95-19-148.a001.m.han1.static.cnode.io`
NS	`ns-a3.cloudnetvn.com` ⚠️ Not in parent delegation
		A	2404:8680:1101:310::53^{🇹🇭 GMO-ZCOM-AS-TH2404:8680:1101::/48 GMO-Z com NetDesign Holdings Co., Ltd. 246 Times Square Building 10th Fl., Room 10/04, Sukhumvit 12-14 Rd., Klongtoey Klongtoey, Bangkok 10110}
		A	150.95.23.148^{🇹🇭 GMO-ZCOM-AS-TH150.95.20.0/22 GMO-Z com NetDesign Holdings Co., Ltd. 246 Times Square Building 10th Fl., Room 10/04, Sukhumvit 12-14 Rd., Klongtoey Klongtoey, Bangkok 10110}
			PTR	`v150-95-23-148.a001.m.bkk1.static.cnode.io`
NS	`ns-a5.cloud.z.com` ⚠️ Not in zone NS records
		A	2404:8680:1101:310::53^{🇹🇭 GMO-ZCOM-AS-TH2404:8680:1101::/48 GMO-Z com NetDesign Holdings Co., Ltd. 246 Times Square Building 10th Fl., Room 10/04, Sukhumvit 12-14 Rd., Klongtoey Klongtoey, Bangkok 10110}
		A	150.95.23.148^{🇹🇭 GMO-ZCOM-AS-TH150.95.20.0/22 GMO-Z com NetDesign Holdings Co., Ltd. 246 Times Square Building 10th Fl., Room 10/04, Sukhumvit 12-14 Rd., Klongtoey Klongtoey, Bangkok 10110}
			PTR	`v150-95-23-148.a001.m.bkk1.static.cnode.io`
MX	`mx1.larksuite.com` ⭐
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.larksuite.com`⁽⁵⁾
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
MX	`mx3.larksuite.com`⁽¹⁰⁾
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.223^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.230.154^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`v=spf1 +include:spf.onlarksuite.com -all`
TXT	`verification-code-site-App_lark=pQdrkyxUfCBenOznZhtI`
SOA	`ns-a5.cloudnetvn.com`postmaster@example.org serial=1719802570

`vn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn`
	NS	`b.dns-servers.vn`
	NS	`c.dns-servers.vn`
	NS	`d.dns-servers.vn`
	NS	`e.dns-servers.vn`
	NS	`f.dns-servers.vn`
	NS	`g.dns-servers.vn`
	NS	`h.dns-servers.vn`
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2030769901

Subdomains

www.polaredu.vn

Same first word

polaredu.vn

Similar names

DNS History

10 records (10 active, 0 former)

●NSns-a1.cloud.z.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●NSns-a1.cloudnetvn.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●NSns-a3.cloud.z.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●NSns-a3.cloudnetvn.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●NSns-a5.cloud.z.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●NSns-a5.cloudnetvn.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●MXmx1.larksuite.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●MXmx2.larksuite.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●MXmx3.larksuite.com2026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

●A103.221.222.622026-05-01 → 2026-05-13 · 2 obs

● 2026-05-01 10:22:38
● 2026-05-13 18:02:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
polaredu.vn	ns-a3.cloud.z.com, ns-a1.cloud.z.com, ns-a5.cloud.z.com	-

✅ Authoritative Response

Server:150.95.19.148

NS records: ns-a3.cloud.z.com, ns-a1.cloud.z.com, ns-a5.cloud.z.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for polaredu.vn (unsigned zone)

⏱️ Timing

Total: 3437ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.221.222.62`
NS	3	`ns-a5.cloudnetvn.com, ns-a1.cloudnetvn.com...`
MX	3	`mx2.larksuite.com (pri: 5), mx1.larksuite.com (pri: 1)...`
TXT	2	`verification-code-site-App_lark=pQdrkyxU, v=spf1 +include:spf.onlarksuite.com -all`
SOA	1	`ns-a5.cloudnetvn.com postmaster.example.`

Analysis

Hierarchy

polaredu.vn is the parent of www.polaredu.vn.

IP Addresses

polaredu.vn resolves to a single IP address: 103.221.222.62.

Other host names including selfvestor.com, dragonexpress.com.vn, nganhouse.com, www.ibaoviet.vn and leeconcept.com.vn share IP numbers with polaredu.vn.

Name Servers

polaredu.vn is delegated to six name servers: ns-a1.cloudnetvn.com, ns-a3.cloudnetvn.com, ns-a5.cloudnetvn.com, ns-a1.cloud.z.com, ns-a3.cloud.z.com and ns-a5.cloud.z.com.

polaredu.vn at least partially shares name servers with other domains, including anyastars.com, cem.co.th, daotaocanbo.edu.vn, 110.95.150.in-addr.arpa and 1buckamateur.com.

these name servers are commonly used with ns-a4.cloud.z.com, ns-a2.cloud.z.com, ns-a1.cnode.io, ns-a3.cnode.io and ns-a5.cnode.io.

Host names with two IP numbers:

ns-a1.cloudnetvn.com points to 2400:8500:3000::88 and 157.7.33.88

ns-a3.cloudnetvn.com points to 2404:8680:1101:310::53 and 150.95.23.148

ns-a5.cloudnetvn.com points to 2404:f080:1101:310::53 and 150.95.19.148

ns-a1.cloud.z.com points to 2404:f080:1101:310::53 and 150.95.19.148

ns-a3.cloud.z.com points to 2404:f080:1101:310::53 and 150.95.19.148

ns-a5.cloud.z.com points to 2404:8680:1101:310::53 and 150.95.23.148

Host names that point to 2404:8680:1101:310::53: ns-a3.cloudnetvn.com and ns-a5.cloud.z.com

Host names that point to 150.95.23.148: ns-a3.cloudnetvn.com and ns-a5.cloud.z.com

Host names that point to 2404:f080:1101:310::53: ns-a5.cloudnetvn.com, ns-a1.cloud.z.com and ns-a3.cloud.z.com

Host names that point to 150.95.19.148: ns-a5.cloudnetvn.com, ns-a1.cloud.z.com and ns-a3.cloud.z.com

Mail Servers

polaredu.vn is handled by three mail servers: mx1.larksuite.com, mx2.larksuite.com and mx3.larksuite.com.

The mail servers for polaredu.vn are shared with other domains, for instance omodajaecooitalia.com, dcev.ie, bink.cc, bok.com.vn and thepaymentverse.com.

Host with three IPs: mx3.larksuite.com points to 18.139.153.173, 101.126.58.223 and 122.14.230.154.

Hosts with a single IP: mx1.larksuite.com and mx2.larksuite.com point to 18.139.153.173.

Hosts that point to 18.139.153.173: mx3.larksuite.com, mx1.larksuite.com and mx2.larksuite.com.

polaredu.vn - robtex.com

polaredu.vn

vn

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`polaredu.vn`

`vn`