`mail.threeduck.com`

	CNAME	`overdue.aliyun.com`
	DNSSEC	⚠️ Not signed
	A	170.33.12.185^{🇸🇬 Alibaba_Cloud_SEC170.33.12.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}

`threeduck.com`

	CNAME	`overdue.aliyun.com`
	DNSSEC	⚠️ Not signed
	A	170.33.12.185^{🇸🇬 Alibaba_Cloud_SEC170.33.12.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}

Previously MX for

threeduck.com

Same first word

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DNS History

3 records (1 active, 2 former)

○A23.91.114.1412015-08-07 → 2015-08-07 · 3 obs

● 2015-08-07 10:58:40
○ 2015-11-29 18:21:02
○ 2026-04-12 21:25:12

○A23.91.70.1082015-11-29 → 2016-07-09 · 4 obs

○ 2015-08-07 10:58:40
● 2015-11-29 18:21:02
● 2016-07-09 02:36:18
○ 2026-04-12 21:25:12

●CNAMEoverdue.aliyun.com2026-04-12 → 2026-04-12 · 1 obs

● 2026-04-12 21:25:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
threeduck.com	dns9.hichina.com, dns10.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.41

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for threeduck.com (unsigned zone)

⏱️ Timing

Total: 533ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`overdue.aliyun.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

IP Addresses

mail.threeduck.com resolves to one IP number: 170.33.12.185.

other host names including chadeng.cn, tyrol.cn, jqex.cn, zhimapay.com and gdnba.cn share IP numbers with mail.threeduck.com.

mail.threeduck.com - robtex.com