`luchenghb.com`

DNSSEC	⚠️ Not signed
A	115.238.21.52^{🇨🇳 CT-HangZhou-IDC115.238.0.0/19 Chinanet-HangZhou-IDC}
NS	`ns1.chinanetsun.com` ⭐
		A	240e:96c:200:2e03::7^{🇨🇳 SHANGHAITELECOM240e:96c::/32 Chinanet Shanghai}
		A	180.235.66.112^{🇨🇳 SHANGHAITELECOM180.235.64.0/22 SHIDC}
NS	`ns2.chinanetsun.com`
		A	240e:96c:200:2e03::70^{🇨🇳 SHANGHAITELECOM240e:96c::/32 Chinanet Shanghai}
		A	222.73.8.7^{🇨🇳 SHANGHAITELECOM222.73.8.0/21 SHIDC}
MX	`mx4.chinanetsun.com` ⭐
		A	180.235.66.99^{🇨🇳 SHANGHAITELECOM180.235.64.0/22 SHIDC}
			PTR	`m99.chinanetsun.com`
MX	`mx4a.chinanetsun.com`⁽²⁰⁾
		A	162.14.140.149^{🇨🇳 TENCENT-NET-AP162.14.128.0/20}
TXT	`v=spf1 include:spf.chinanetsun.com -all`
SOA	`ns1.chinanetsun.com`task@netsun.com 2015-10-26 #9

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785328572

Same first word

luchenghb.com

DNS History

5 records (5 active, 0 former)

●NSns1.chinanetsun.com2016-12-20 → 2026-07-29 · 2 obs

● 2016-12-20 09:16:02
● 2026-07-29 12:54:54

●NSns2.chinanetsun.com2016-12-20 → 2026-07-29 · 2 obs

● 2016-12-20 09:16:02
● 2026-07-29 12:54:54

●MXmx4.chinanetsun.com2016-12-20 → 2026-07-29 · 5 obs

● 2016-12-20 09:16:02
● 2017-09-23 22:14:08
○ 2026-07-10 05:26:20
● 2026-07-11 09:25:58
● 2026-07-29 12:54:54

●MXmx4a.chinanetsun.com2016-12-20 → 2026-07-29 · 5 obs

● 2016-12-20 09:16:02
● 2017-09-23 22:14:08
○ 2026-07-10 05:26:20
● 2026-07-11 09:25:58
● 2026-07-29 12:54:54

●A115.238.21.522026-06-24 → 2026-07-29 · 4 obs

● 2026-06-24 09:50:22
○ 2026-07-10 05:26:20
● 2026-07-11 09:25:58
● 2026-07-29 12:54:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
luchenghb.com	ns1.chinanetsun.com, ns2.chinanetsun.com	4 records

✅ Authoritative Response

Server:222.73.8.7

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for luchenghb.com (unsigned zone)

⏱️ Timing

Total: 720ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`115.238.21.52`
NS	2	`ns2.chinanetsun.com, ns1.chinanetsun.com`
MX	2	`mx4a.chinanetsun.com (pri: 20), mx4.chinanetsun.com (pri: 10)`
TXT	1	`v=spf1 include:spf.chinanetsun.com -all`
SOA	1	`ns1.chinanetsun.com task.netsun.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.chinanetsun.com, ns1.chinanetsun.com, ns2.chinanetsun.com...)

Analysis

IP Addresses

luchenghb.com resolves to one IP address: 115.238.21.52.

zjhcbio.com, yukaichem.com, steroidchem.com and two other host names share IP numbers with luchenghb.com.

Name Servers

luchenghb.com has two authoritative name servers — ns1.chinanetsun.com and ns2.chinanetsun.com.

luchenghb.com uses the same name servers as several other domains — among them anxuanchem.com, tfsilk.com, mingguangchem.com and two more.

Some name servers delegated to luchenghb.com are also used by other domains, notably acticarbon.com and cqwl.com.

Both ns1.chinanetsun.com and ns2.chinanetsun.com have two IP addresses each. ns1.chinanetsun.com resolves to 180.235.66.112 and 240e:96c:200:2e03::7; ns2.chinanetsun.com resolves to 222.73.8.7 and 240e:96c:200:2e03::70.

Mail Servers

Mail for luchenghb.com is handled by two mail servers — mx4.chinanetsun.com and mx4a.chinanetsun.com.

luchenghb.com uses an identical mail server configuration to several other domains — among them extendabio.com, harley-davidsondalian.com, abc-chem.com and two more.

luchenghb.com has at least partial mail server overlap with other domains such as sinophos.com.cn, guangxin-chem.com, lknmaterial.com and two more.

mx4.chinanetsun.com → 180.235.66.99 and mx4a.chinanetsun.com → 162.14.140.149: one IP number per host name.

luchenghb.com - robtex.com

luchenghb.com

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