`mail.cktechhk.com`

DNSSEC	⚠️ Not signed
A	222.73.4.178^{🇨🇳 SHANGHAITELECOM222.73.0.0/21 SHIDC}
		PTR	`mail.163ns.com.cn`

`cktechhk.com`

	DNSSEC	⚠️ Not signed
	A	148.72.3.231^{🇺🇸 AS398101148.72.0.0/22}
	NS	`dns1.4cun.com` ⭐
	NS	`dns.4cun.com` ⚠️ Not in zone NS records
	NS	`dns2.4cun.com` ⚠️ Not in zone NS records
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽²⁾
	MX	`alt2.aspmx.l.google.com`⁽³⁾
	MX	`aspmx2.googlemail.com`⁽⁴⁾
	MX	`aspmx3.googlemail.com`⁽⁵⁾
	MX	`aspmx4.googlemail.com`⁽⁶⁾
	MX	`aspmx5.googlemail.com`⁽⁷⁾
	MX	`mail.cktechhk.com`⁽¹⁰⁾
	SOA	`dns.4cun.com`admin@cktechhk.com serial=1772526839

MX for

cktechhk.com

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DNS History

1 record (1 active, 0 former)

●A222.73.4.1782015-07-18 → 2026-04-05 · 2 obs

● 2015-07-18 04:00:06
● 2026-04-05 21:24:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cktechhk.com	dns1.4cun.com, dns2.4cun.com	4 records

✅ Authoritative Response

Server:219.138.102.210

NS records: dns1.4cun.com, dns2.4cun.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cktechhk.com (unsigned zone)

⏱️ Timing

Total: 551ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`222.73.4.178`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns1.4cun.com, dns1.4cun.com, dns2.4cun.com...)

Analysis

Mail Server Role

mail.cktechhk.com functions as a mail server for cktechhk.com.

Commonly used as mail server together with mail.cktechhk.com are aspmx2.googlemail.com, aspmx3.googlemail.com and aspmx4.googlemail.com.

IP Addresses

mail.cktechhk.com points to IP number: 222.73.4.178.

Other host names such as mail.shvir.com, mail.china-lab.cn, mail.hmszgc.com, mail.bizinchina.cc and mail.aiwei-evy.cn share IPs with mail.cktechhk.com.

mail.cktechhk.com - robtex.com