`mail.jingweioptical.com`

	DNSSEC	⚠️ Not signed
	A	218.87.186.37^{🇨🇳 CHINANET-BACKBONE218.87.0.0/16 China Telecom Network}

`jingweioptical.com`

	DNSSEC	⚠️ Not signed
	A	218.87.186.37^{🇨🇳 CHINANET-BACKBONE218.87.0.0/16 China Telecom Network}
	NS	`dns7.hichina.com` ⭐
	NS	`dns8.hichina.com`
	MX	`mail.jingweioptical.com` ⭐
	TXT	`v=spf1 ip4:218.87.186.37 ip4:218.87.186.38 include:spf.mailrelay.cn -all`
	SOA	`dns7.hichina.com`hostmaster@hichina.com 2026-01-12 #9

MX for

jingweioptical.com

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DNS History

1 record (1 active, 0 former)

●A218.87.186.372026-02-28 → 2026-08-11 · 2 obs

● 2026-02-28 04:03:30
● 2026-08-11 18:30:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net...	-
jingweioptical.com	dns7.hichina.com, dns8.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.43

NS records: dns7.hichina.com, dns8.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jingweioptical.com (unsigned zone)

⏱️ Timing

Total: 510ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`218.87.186.37`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns7.hichina.com, dns7.hichina.com, dns7.hichina.com...)

Analysis

Mail Server Role

mail.jingweioptical.com serves as a mail server for jingweioptical.com.

IP Addresses

mail.jingweioptical.com points to a single IP number: 218.87.186.37.

Host names like jingweioptical.com are further examples that share IP numbers with mail.jingweioptical.com.

mail.jingweioptical.com - robtex.com