`mail.dobechina.com`

	CNAME	`ssl.exmail.qq.com`
	DNSSEC	⚠️ Not signed

`dobechina.com`

	DNSSEC	⚠️ Not signed
	A	47.117.80.136^{🇨🇳 Alibaba-Cloud47.117.0.0/17 Alibaba (US) Technology Co., Ltd.}
	NS	`dns19.hichina.com` ⭐
	NS	`dns20.hichina.com`
	MX	`mxbiz.vip.qq.com` ⭐
	TXT	`google-site-verification=AJSW66_-lSvKA_Qvm9aYlsANfmJDRZrWzcXhNu3Wids`
	TXT	`v=spf1 include:spf.mail.qq.com ~all`
	SOA	`dns19.hichina.com`hostmaster@hichina.com 2026-01-09 #13

PTR for

147.57.73.222.in-addr.arpa

123.57.73.222.in-addr.arpa

Previously MX for

dobechina.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A222.73.57.1232015-07-13 → 2016-05-06 · 3 obs

● 2015-07-13 05:38:00
● 2016-05-06 09:16:00
○ 2026-03-26 06:56:16

●CNAMEssl.exmail.qq.com2026-03-26 → 2026-03-26 · 1 obs

● 2026-03-26 06:56:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
dobechina.com	dns19.hichina.com, dns20.hichina.com	18 records

✅ Authoritative Response

Server:2408:4009:501::27

NS records: dns19.hichina.com, dns20.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dobechina.com (unsigned zone)

⏱️ Timing

Total: 2517ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`ssl.exmail.qq.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns19.hichina.com, dns19.hichina.com, dns19.hichina.com...)

mail.dobechina.com - robtex.com