`icertify.cn`

DNSSEC	⚠️ Not signed
NS	`dns11.hichina.com` ⭐
		A	2408:4009:501::19^{🇨🇳 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	`dns12.hichina.com`
		A	2408:4009:501::20^{🇨🇳 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,}
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`verification-code-site-App_feishu=HC2Bb23NPpoltLmHI5nS`
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
SOA	`dns11.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=2035145984

Same first word

icertify.com.au

icertify.net

icertify.co.uk

icertify.com

icertify.org

icertify.us

icertify.de

icertify.cn

Similar names

cityfire.ru

irectify.com

firecity.com

certiify.com

firecity.vn

cityfire.co.uk

cityfire.net

triceify.com

cityrefi.com

reficity.com

certifyi.com

fiercity.com

irectify.co.uk

recitify.com

cityfire.com

cityfire.ca

DNS History

5 records (5 active, 0 former)

●NSdns11.hichina.com2026-05-22 → 2026-08-05 · 2 obs

● 2026-05-22 20:39:18
● 2026-08-05 17:13:18

●NSdns12.hichina.com2026-05-22 → 2026-08-05 · 2 obs

● 2026-05-22 20:39:18
● 2026-08-05 17:13:18

●MXmx1.feishu.cn2026-05-22 → 2026-08-05 · 2 obs

● 2026-05-22 20:39:18
● 2026-08-05 17:13:18

●MXmx2.feishu.cn2026-05-22 → 2026-08-05 · 2 obs

● 2026-05-22 20:39:18
● 2026-08-05 17:13:18

●MXmx3.feishu.cn2026-05-22 → 2026-08-05 · 2 obs

● 2026-05-22 20:39:18
● 2026-08-05 17:13:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	c.dns.cn, a.dns.cn, b.dns.cn, e.dns.cn...	-
icertify.cn	dns11.hichina.com, dns12.hichina.com	-

✅ Authoritative Response

Server:47.118.199.201

NS records: dns11.hichina.com, dns12.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for icertify.cn (unsigned zone)

⏱️ Timing

Total: 3436ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns12.hichina.com, dns11.hichina.com`
MX	3	`mx1.feishu.cn (pri: 1), mx2.feishu.cn (pri: 5)...`
TXT	2	`v=spf1 +include:_netblocks.m.feishu.cn -, verification-code-site-App_feishu=HC2Bb2`
SOA	1	`dns11.hichina.com hostmaster.hichina.com`

Analysis

Name Servers

The NS records for icertify.cn delegate to dns11.hichina.com and dns12.hichina.com.

The name server configuration of icertify.cn is shared with other domains, for instance hengtel.com, ilewan.com, xslh.com and two others.

icertify.cn has at least partial name server overlap with other domains, such as jjj555.com, hongsha.com, babiniya.com and two others.

It is common to see these name servers used together with name servers expirens3.hichina.com and expirens4.hichina.com.

Hosts with 9 IP addresses each:

dns11.hichina.com maps to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 additional IP addresses.

dns12.hichina.com maps to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 additional IP addresses.

Mail Servers

icertify.cn has three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

At least some of the mail servers used by icertify.cn are shared with other domains: click-vista.com, golinke.com, yinfeng.cn and two others among them.

Host names carrying three IP numbers:

mx3.feishu.cn maps to three IP addresses: 52.220.106.220, 101.126.58.225 and 122.14.229.0.

Host names pointing to two IP addresses:

The A records for mx2.feishu.cn return 101.126.58.225 and 122.14.229.0.

Host names resolving to a single IP address:

mx1.feishu.cn resolves to the IP address 52.220.106.220.

mx3.feishu.cn and mx1.feishu.cn each have 52.220.106.220 IP addresses.

mx3.feishu.cn and mx2.feishu.cn each have 101.126.58.225 IP addresses.

mx3.feishu.cn and mx2.feishu.cn each have 122.14.229.0 IP addresses.