`api.ooolab.edu.vn`

DNSSEC	⚠️ Not signed
A	13.251.70.203^{🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix}
		PTR	`ec2-13-251-70-203.ap-southeast-1.compute.amazonaws.com`
A	18.141.46.110^{🇸🇬 Amazon18.140.0.0/15 EC2 SIN prefix}
A	122.248.229.181^{🇸🇬 Amazon122.248.192.0/18 Asia-Pacific Resources Private Limited Bedok Central Post Office PO Box 482}

`ooolab.edu.vn`

	DNSSEC	⚠️ Not signed
	A	99.83.181.15^{🇺🇸 Amazon99.83.176.0/20}
	NS	`ns-977.awsdns-58.net` ⭐
	NS	`ns-1457.awsdns-54.org`
	NS	`ns-1865.awsdns-41.co.uk`
	NS	`ns-492.awsdns-61.com`
	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=n_KsVhzLtzhz5XoaxiHvaBW6AFRVVeTIJT1Tv6vycwQ`
	TXT	`mailerlite-domain-verification=502116e0e069727fd424adbfbcd002d5379af333`
	TXT	`v=spf1 include:_spf.mlsend.com include:amazonses.com include:_spf.google.com ...`
	SOA	`ns-977.awsdns-58.net`awsdns-hostmaster@amazon.com serial=1

Same first word

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DNS History

6 records (3 active, 3 former)

●A122.248.229.1812026-05-12 → 2026-05-12 · 3 obs

○ 2026-05-01 04:50:22
● 2026-05-12 04:29:30
● 2026-05-12 04:29:32

○A13.213.227.1152026-05-01 → 2026-05-01 · 4 obs

● 2026-05-01 02:02:54
● 2026-05-01 04:50:22
○ 2026-05-12 04:29:30
○ 2026-05-12 04:29:32

●A13.251.70.2032026-05-12 → 2026-05-12 · 3 obs

○ 2026-05-01 04:50:22
● 2026-05-12 04:29:30
● 2026-05-12 04:29:32

○A18.140.78.2252026-05-01 → 2026-05-01 · 4 obs

● 2026-05-01 02:02:54
● 2026-05-01 04:50:22
○ 2026-05-12 04:29:30
○ 2026-05-12 04:29:32

●A18.141.46.1102026-05-12 → 2026-05-12 · 3 obs

○ 2026-05-01 04:50:22
● 2026-05-12 04:29:30
● 2026-05-12 04:29:32

○A52.221.24.312026-05-01 → 2026-05-01 · 4 obs

● 2026-05-01 02:02:54
● 2026-05-01 04:50:22
○ 2026-05-12 04:29:30
○ 2026-05-12 04:29:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
ooolab.edu.vn	ns-1865.awsdns-41.co.uk, ns-492.awsdns-61.com, ns-1457.awsdns-54.org, ns-977.awsdns-58.net	-

✅ Authoritative Response

Server:205.251.195.209

NS records: ns-1865.awsdns-41.co.uk, ns-492.awsdns-61.com, ns-1457.awsdns-54.org, ns-977.awsdns-58.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ooolab.edu.vn (unsigned zone)

⏱️ Timing

Total: 1065ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`18.141.46.110, 13.251.70.203...`

Analysis

IP Addresses

api.ooolab.edu.vn points to three IPs: 13.251.70.203, 18.141.46.110 and 122.248.229.181.

Other host names, for instance ec2-13-251-70-203.ap-southeast-1.compute.amazonaws.com, share IP numbers with api.ooolab.edu.vn.

api.ooolab.edu.vn - robtex.com

api.ooolab.edu.vn

ooolab.edu.vn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

`api.ooolab.edu.vn`

`ooolab.edu.vn`