🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`study.sg`

DNSSEC	⚠️ Not signed
A	151.246.1.117^{🇮🇷 ENETWORKS128.0.0.0/2}
		PTR	`sinult3.hostarmada.net`
NS	`ns1.sinult3.hostarmada.net` ⭐
		A	151.246.1.117^{🇮🇷 ENETWORKS128.0.0.0/2}
			PTR	`sinult3.hostarmada.net`
NS	`ns2.sinult3.hostarmada.net`
		A	151.246.1.118^{🇮🇷 ENETWORKS128.0.0.0/2}
			PTR	`ns2.sinult3.hostarmada.net`
MX	`study-sg.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc09::1^{🇸🇬 Microsoft2a01:111:f000::/36}
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.137.2^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`MS=ms45126272`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns1.sinult3.hostarmada.net`root@sinult3.hostarmada.net 2026-06-30 #0

`sg`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ds.sgnic.sg` ⭐
	NS	`dsany2.sgnic.sg`
	NS	`dsany3.sgnic.sg`
	NS	`dsany4.sgnic.sg`
	NS	`ns4.apnic.net`
	NS	`pch.sgzones.sg`
	SOA	`ds.sgnic.sg`dna@sgnic.sg serial=2610232130

Same first word

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study.education

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Previous names

Next names

DNS History

4 records (4 active, 0 former)

●NSns1.sinult3.hostarmada.net2026-09-30 → 2026-10-23 · 2 obs

● 2026-09-30 19:29:22
● 2026-10-23 22:26:26

●NSns2.sinult3.hostarmada.net2026-09-30 → 2026-10-23 · 2 obs

● 2026-09-30 19:29:22
● 2026-10-23 22:26:26

●MXstudy-sg.mail.protection.outlook.com2026-09-30 → 2026-10-23 · 2 obs

● 2026-09-30 19:29:22
● 2026-10-23 22:26:26

●A151.246.1.1172026-09-30 → 2026-10-23 · 2 obs

● 2026-09-30 19:29:22
● 2026-10-23 22:26:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
sg	ns4.apnic.net, pch.sgzones.sg, dsany2.sgnic.sg, dsany3.sgnic.sg...	10 records
study.sg	ns2.sinult3.hostarmada.net, ns1.sinult3.hostarmada.net	-

✅ Authoritative Response

Server:151.246.1.117

NS records: ns2.sinult3.hostarmada.net, ns1.sinult3.hostarmada.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for study.sg (unsigned zone)

⏱️ Timing

Total: 1451ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`151.246.1.117`
NS	2	`ns1.sinult3.hostarmada.net, ns2.sinult3.hostarmada.net`
MX	1	`study-sg.mail.protection.outlook.com (pr`
TXT	2	`MS=ms45126272, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.sinult3.hostarmada.net root.sinult3.`

📌 Glue Records Collected

Total: 10

In-bailiwick: 8 (pch.sgzones.sg, pch.sgzones.sg, dsany2.sgnic.sg...)

Out-of-bailiwick: 2 (ns4.apnic.net, ns4.apnic.net)

Analysis

IP Addresses

study.sg has exactly one IP address — 151.246.1.117.

sweet-moskwa.com, indo202.net, moneylinebd.com plus two other host names have IP numbers in common with study.sg.

Name Servers

study.sg is served by two delegated name servers, ns1.sinult3.hostarmada.net and ns2.sinult3.hostarmada.net.

The name server configuration of study.sg is shared with other domains, for instance seribu89.net, primemaxtrade.com, expertcourse.net and two others.

There is at least partial name server overlap between study.sg and other domains — donoithatthongminh.shop, byncotech.com, guenstigekreditevergleich.com and two more among them.

ns1.sinult3.hostarmada.net → 151.246.1.117 and ns2.sinult3.hostarmada.net → 151.246.1.118: one IP number per host name.

Mail Servers

study.sg uses one mail server — study-sg.mail.protection.outlook.com.

study-sg.mail.protection.outlook.com has 8 IP addresses: 52.101.124.117, 52.101.137.0, 52.101.137.2 plus 5 more.

study.sg - robtex.com

study.sg

sg

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`study.sg`

`sg`