`mail02.zhenghai.com`

DNSSEC	⚠️ Not signed
A	58.57.17.90^{🇨🇳 CHINANET-BACKBONE58.56.0.0/15 China Telecom Network}
		PTR	`mail.zhenghai.com`

`zhenghai.com`

	DNSSEC	⚠️ Not signed
	A	47.105.98.95^{🇨🇳 Alibaba-Cloud47.105.0.0/16}
	NS	`ns1.dnsv4.com` ⭐
	NS	`ns2.dnsv4.com`
	MX	`zhbio-com.corpsmtp.net` ⭐
	MX	`zhbio-com.corpsmtp.cn`⁽¹⁰⁾
	MX	`cnc.biz-email.net`⁽¹⁵⁾
	MX	`mail.biz-email.net`⁽²⁰⁾
	TXT	`v=spf1 include:spf.corp-email.com include:spfb.corp-email.com ~all`
	TXT	`848178259-212739694`
	SOA	`ns1.dnsv4.com`enterprise2dnsadmin@dnspod.com serial=1782694464

Previously MX for

zhenghai.com

Same first word

mail02.gov.cy

mail02.kinghost.net

Similar names

mail20.de

mail20.chicappa.jp

mail20.ru

20mail.eu

mail20.com

02mail.com

02mail.co.uk

20mail.it

02mail.de

20mail.com

20mail.ru

DNS History

1 record (1 active, 0 former)

●A58.57.17.902017-12-26 → 2026-07-27 · 2 obs

● 2017-12-26 16:25:08
● 2026-07-27 15:59:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...	-
zhenghai.com	ns1.dnsv4.com, ns2.dnsv4.com	15 records

✅ Authoritative Response

Server:1.12.0.24

NS records: ns1.dnsv4.com, ns2.dnsv4.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zhenghai.com (unsigned zone)

⏱️ Timing

Total: 120ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`58.57.17.90`

📌 Glue Records Collected

Total: 15

Out-of-bailiwick: 15 (ns1.dnsv4.com, ns1.dnsv4.com, ns1.dnsv4.com...)

Analysis

IP Addresses

mail02.zhenghai.com resolves to just one IP address, 58.57.17.90.

mail02.zhmag.com, for instance, is one of the other host names sharing IP numbers with mail02.zhenghai.com.

mail02.zhenghai.com - robtex.com