`cottech.com`

DNSSEC	⚠️ Not signed
A	117.79.225.155^{🇨🇳 SHUJUJIA117.79.224.0/21 CMI (Customer Route)}
NS	`vip3.alidns.com` ⭐
		A	2408:4009:500::3^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.3^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.5^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.210^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.136^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.26^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.10^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip4.alidns.com`
		A	2408:4009:500::4^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.4^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.6^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.211^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.137^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.27^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.11^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
MX	`mx.ym.163.com` ⭐
		A	111.124.200.35^{🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19}
SOA	`vip3.alidns.com`hostmaster@hichina.com 2025-12-11 #7

`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=1774535142

Subdomains

www.cottech.com

Same first word

cottech.com

Similar names

tcotech.com

tocchet.com

thectco.com

tocchet.it

octtech.cn

DNS History

7 records (4 active, 3 former)

○NSdns13.hichina.com2015-07-11 → 2020-01-08 · 4 obs

● 2015-07-11 21:57:36
● 2020-01-08 11:57:04
○ 2026-02-28 18:11:46
○ 2026-03-26 14:46:10

○NSdns14.hichina.com2015-07-11 → 2020-01-08 · 4 obs

● 2015-07-11 21:57:36
● 2020-01-08 11:57:04
○ 2026-02-28 18:11:46
○ 2026-03-26 14:46:10

●NSvip3.alidns.com2026-02-28 → 2026-03-26 · 3 obs

○ 2020-01-08 11:57:04
● 2026-02-28 18:11:46
● 2026-03-26 14:46:10

●NSvip4.alidns.com2026-02-28 → 2026-03-26 · 3 obs

○ 2020-01-08 11:57:04
● 2026-02-28 18:11:46
● 2026-03-26 14:46:10

○MXmail.cottech.com2015-07-11 → 2017-02-15 · 4 obs

● 2015-07-11 21:57:36
● 2017-02-15 21:31:10
○ 2020-01-08 11:57:04
○ 2026-03-26 14:46:10

●MXmx.ym.163.com2020-01-08 → 2026-03-26 · 3 obs

○ 2017-02-15 21:31:10
● 2020-01-08 11:57:04
● 2026-03-26 14:46:10

●A117.79.225.1552015-07-11 → 2026-03-26 · 2 obs

● 2015-07-11 21:57:36
● 2026-03-26 14:46:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cottech.com	vip3.alidns.com, vip4.alidns.com	22 records

✅ Authoritative Response

Server:2408:4009:500::3

NS records: vip3.alidns.com, vip4.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cottech.com (unsigned zone)

⏱️ Timing

Total: 2272ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`117.79.225.155`
NS	2	`vip4.alidns.com, vip3.alidns.com`
MX	1	`mx.ym.163.com (pri: 10)`
SOA	1	`vip3.alidns.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 22

Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)

Analysis

Hierarchy

The parent of www.cottech.com is cottech.com.

IP Addresses

cottech.com points to a single IP: 117.79.225.155.

Name Servers

Two name servers vip3.alidns.com and vip4.alidns.com handle delegation for cottech.com.

cottech.com uses the same name server setup as other domains, for example mygzb.com, qupeiyin.cn, jlc-cad.com, alibaba-na.com and allhddownloader.com.

cottech.com partially shares name servers with other domains; examples include huyakeji.com, jiangshan.gov.cn, zhiyun-tech.com, xqppt.com and hy.fan.

These name servers commonly accompany vip1.alidns.com, vip2.alidns.com, ns1.huyatvns.com and ns2.huyatvns.com.

Host names with seven IP numbers: vip3.alidns.com points to: 2408:4009:500::3, 8.212.93.3, 140.205.1.5, 170.33.32.210, 170.33.40.136, 170.33.73.26 and 170.33.80.10. vip4.alidns.com points to: 2408:4009:500::4, 8.212.93.4, 140.205.1.6, 170.33.32.211, 170.33.40.137, 170.33.73.27 and 170.33.80.11.

Mail Servers

cottech.com is handled by a single mail server, mx.ym.163.com.

cottech.com has the same mail server setup as other domains, including zdth.net, zkxltech.com, 66toys.com, eachtel.cn and ispchina.com.

cottech.com shares some mail servers with other domains at least partially, for example haloam.com, jishentang.com, cfuas.com and kmww.com.

mx.ym.163.com points to a single IP: 111.124.200.35.

cottech.com - robtex.com

cottech.com

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