`smtp.doingcom.com`

	CNAME	`smtp.yunyou.top`
	CNAME	`gslb.yunyou.top`
	DNSSEC	⚠️ Not signed
	A	60.247.169.136^{🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network}
	A	60.247.169.137^{🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network}

`doingcom.com`

	DNSSEC	⚠️ Not signed
	A	103.120.82.50^{🇭🇰 WEST263GO-HK103.120.82.0/23 West263 International Limited 12/F, San Toi Building, 137-139 Connaught Road Central, Hong Kong,}
	NS	`ns1.35.net` ⭐
	NS	`ns2.35.net`
	NS	`ns3.35.net`
	NS	`ns4.35.net`
	MX	`mx1.yunyou.top` ⭐
	MX	`mx2.yunyou.top`⁽¹⁰⁾
	TXT	`v=spf1 include:yunyou.top -all`
	SOA	`ns1.35.net`dnsconct@myhostadmin.net 2025-05-28 #21

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DNS History

4 records (1 active, 3 former)

○A163.177.72.1432017-01-29 → 2017-01-29 · 2 obs

● 2017-01-29 11:50:18
○ 2026-05-13 07:34:44

○A163.177.90.1252017-01-29 → 2017-01-29 · 2 obs

● 2017-01-29 11:50:18
○ 2026-05-13 07:34:44

○CNAMEsmtp.exmail.qq.com2017-01-29 → 2017-01-29 · 2 obs

● 2017-01-29 11:50:18
○ 2026-05-13 07:34:44

●CNAMEsmtp.yunyou.top2026-05-13 → 2026-05-13 · 2 obs

○ 2017-01-29 11:50:18
● 2026-05-13 07:34:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net...	-
doingcom.com	ns3.35.net, ns2.35.net, ns1.35.net, ns4.35.net	-

✅ Authoritative Response

Server:61.172.183.73

NS records: ns3.35.net, ns2.35.net, ns1.35.net, ns4.35.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doingcom.com (unsigned zone)

⏱️ Timing

Total: 4249ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`smtp.yunyou.top`

Analysis

IP Addresses

The entity smtp.doingcom.com points to two IP numbers: 60.247.169.136 and 60.247.169.137.

Other host names, for instance, gslb.yunyou.top share IP numbers with smtp.doingcom.com.

smtp.doingcom.com - robtex.com