`app91.cn`

DNSSEC	⚠️ Not signed
A	220.231.155.80^{🇨🇳 CHINANET-Guangdong-ShenZhen-MAN220.231.128.0/18 ShenZhenRunxunData -SZMAN-STATIC}
NS	`dns9.hichina.com` ⭐
		A	2408:4009:501::17^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns10.hichina.com`
		A	2408:4009:501::18^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
SOA	`dns9.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2035127791

Same first word

app91.cn

Similar names

91app.co

91app.tw

91app.online

91pap.com

91app.my

91app.org

91app.dev

91app.tv

91app.com

91app.hk

91app.store

91app.com.my

91app.blue

91app.io

91app.tech

DNS History

3 records (3 active, 0 former)

●NSdns10.hichina.com2026-04-20 → 2026-08-03 · 2 obs

● 2026-04-20 05:41:46
● 2026-08-03 10:25:42

●NSdns9.hichina.com2026-04-20 → 2026-08-03 · 2 obs

● 2026-04-20 05:41:46
● 2026-08-03 10:25:42

●A220.231.155.802026-04-20 → 2026-08-03 · 5 obs

● 2026-04-20 05:41:46
● 2026-06-12 11:36:16
○ 2026-07-15 14:48:28
● 2026-08-03 10:25:40
● 2026-08-03 10:25:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
app91.cn	dns9.hichina.com, dns10.hichina.com	-

✅ Authoritative Response

Server:120.76.107.41

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at cn: Error: DNS query timeout: 203.119.25.1 for DNSKEY cn

⏱️ Timing

Total: 4150ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`220.231.155.80`
NS	2	`dns10.hichina.com, dns9.hichina.com`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

app91.cn resolves to one IP address: 220.231.155.80.

app91.cn shares its IP numbers with other host names like cecertificate.org, usafcc.com and ebowh.com.

Name Servers

app91.cn is delegated to two name servers: dns10.hichina.com and dns9.hichina.com.

app91.cn uses the same name servers as several other domains — among them onlinesd.cn, oumaipower.com, giphoo.com and two more.

app91.cn shares at least some of its name servers with other domains, including chineseorchids.com, dmzba.cn, tjlivtc.org and two others.

These name servers are frequently seen alongside the name servers expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.com.

Hostnames that resolve to 9 IP addresses:

dns10.hichina.com resolves to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 other IP addresses.

dns9.hichina.com resolves to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 other IP addresses.

app91.cn - robtex.com

app91.cn

cn