techtree.cn - dns.ninja

`techtree.cn`

DNSSEC	⚠️ Not signed
NS	`dns21.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::29^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 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	139.224.142.110^{🇨🇳 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	`dns22.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::30^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 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	139.224.142.108^{🇨🇳 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,}

`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=2034967576

Same first word

techtree.com.hk

techtree.org

techtree.nl

techtree.jp

techtree.ru

techtree.io

techtree.de

techtree.co

techtree.net

techtree.eu

techtree.ca

techtree.center

techtree.in

techtree.info

techtree.it

techtree.se

techtree.at

techtree.com

techtree.cn

techtree.us

techtree.dk

techtree.website

Similar names

DNS History

7 records (2 active, 5 former)

○NSdns10.hichina.com2015-08-20 → 2016-09-08 · 4 obs

● 2015-08-20 23:23:04
● 2016-09-08 01:16:00
○ 2026-03-24 01:11:14
○ 2026-06-25 10:32:32

●NSdns21.hichina.com2026-03-24 → 2026-06-25 · 3 obs

○ 2017-08-09 16:30:42
● 2026-03-24 01:11:14
● 2026-06-25 10:32:32

●NSdns22.hichina.com2026-03-24 → 2026-06-25 · 3 obs

○ 2017-08-09 16:30:42
● 2026-03-24 01:11:14
● 2026-06-25 10:32:32

○NSdns9.hichina.com2015-08-20 → 2016-09-08 · 4 obs

● 2015-08-20 23:23:04
● 2016-09-08 01:16:00
○ 2017-08-09 16:30:42
○ 2026-06-25 10:32:32

○NSwww.techtree.cn2017-08-09 → 2017-08-09 · 4 obs

○ 2016-09-08 01:16:00
● 2017-08-09 16:30:42
○ 2026-03-24 01:11:14
○ 2026-06-25 10:32:32

○CNAMEoverdue.aliyun.com2026-03-24 → 2026-03-24 · 4 obs

○ 2017-08-09 16:30:42
● 2026-03-24 01:11:14
○ 2026-06-24 16:38:36
○ 2026-06-25 10:32:32

○CNAMEt.dcoin.co2017-08-09 → 2017-08-09 · 3 obs

● 2017-08-09 16:30:42
○ 2026-03-24 01:11:14
○ 2026-06-25 10:32:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	c.dns.cn, b.dns.cn, e.dns.cn, a.dns.cn...	-
techtree.cn	dns21.hichina.com, dns22.hichina.com	-

✅ Authoritative Response

Server:139.224.142.110

NS records: dns21.hichina.com, dns22.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for techtree.cn (unsigned zone)

⏱️ Timing

Total: 6843ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns22.hichina.com, dns21.hichina.com`
CNAME	1	`overdue.aliyun.com`
SOA	1	`dns21.hichina.com hostmaster.hichina.com`

Analysis

Name Servers

techtree.cn uses two name servers for its delegation: dns21.hichina.com and dns22.hichina.com.

The name server configuration of techtree.cn is shared with other domains, for instance youfang888.com, jddsc.com, xduoo.com and two others.

The name servers of techtree.cn overlap at least partially with those of other domains — among them 0791dj.com, jobtone.com, detienen.top and two more.

These name servers commonly appear alongside the name servers expirens3.hichina.com and expirens4.hichina.com.

Hosts with 9 IP addresses each:

Hostname dns21.hichina.com directs to 39.96.153.40, 39.96.153.60 and 47.118.199.200 along with 6 other IP addresses.

Hostname dns22.hichina.com directs to 39.96.153.38, 39.96.153.61 and 47.118.199.198 along with 6 other IP addresses.