81tech.com - dns.ninja

`81tech.com`

DNSSEC	⚠️ Not signed
A	120.24.179.179^{🇨🇳 Alibaba-Cloud120.24.0.0/16}
NS	`dns17.hichina.com` ⭐
		A	2408:4009:501::25^{🇨🇳 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	`dns18.hichina.com`
		A	2408:4009:501::26^{🇨🇳 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,}
MX	`mx.ym.163.com` ⭐
		A	111.124.200.35^{🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19}
TXT	`v=spf1 include:spf.163.com ~all`
TXT	`google-site-verification=4pAZEo2Ck9X_C6CuUMthgNQ4Lh8ullL93DqAWabS_Gs`
SOA	`dns17.hichina.com`hostmaster@hichina.com 2026-05-28 #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=1782639990

WOT: UNKNOWN (61/100)

Subdomains

bbs.81tech.com

www.81tech.com

Same first word

81tech.cn

81tech.com

Similar names

18tech.co

tech18.cn

18tech.com

tech18.com

DNS History

10 records (4 active, 6 former)

○NSdns.bizcn.com2015-07-08 → 2016-05-02 · 4 obs

● 2015-07-08 04:52:16
● 2016-05-02 18:45:20
○ 2026-02-15 00:03:08
○ 2026-06-28 09:47:12

○NSdns.cnmsn.net2015-07-08 → 2016-02-11 · 4 obs

● 2015-07-08 04:52:16
● 2016-02-11 07:18:58
○ 2026-02-15 00:03:08
○ 2026-06-28 09:47:12

●NSdns17.hichina.com2026-02-15 → 2026-06-28 · 3 obs

○ 2016-05-02 18:45:20
● 2026-02-15 00:03:08
● 2026-06-28 09:47:12

●NSdns18.hichina.com2026-02-15 → 2026-06-28 · 3 obs

○ 2016-05-02 18:45:20
● 2026-02-15 00:03:08
● 2026-06-28 09:47:12

○MXmx.qiye.163.com2015-07-08 → 2017-01-16 · 4 obs

● 2015-07-08 04:52:16
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-06-28 09:47:12

●MXmx.ym.163.com2026-02-15 → 2026-06-28 · 3 obs

○ 2017-01-16 03:23:28
● 2026-02-15 00:03:08
● 2026-06-28 09:47:12

○MXmx2.qiye.163.com2015-07-08 → 2017-01-16 · 4 obs

● 2015-07-08 04:52:16
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-06-28 09:47:12

●A120.24.179.1792026-02-15 → 2026-06-28 · 3 obs

○ 2017-01-16 03:23:28
● 2026-02-15 00:03:08
● 2026-06-28 09:47:12

○A121.40.27.1752017-01-16 → 2017-01-16 · 4 obs

○ 2016-02-11 07:18:58
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-06-28 09:47:12

○A42.120.41.1682015-07-08 → 2016-02-11 · 4 obs

● 2015-07-08 04:52:16
● 2016-02-11 07:18:58
○ 2017-01-16 03:23:28
○ 2026-06-28 09:47:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net...	-
81tech.com	dns17.hichina.com, dns18.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.38

NS records: dns17.hichina.com, dns18.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 81tech.com (unsigned zone)

⏱️ Timing

Total: 515ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`120.24.179.179`
NS	2	`dns18.hichina.com, dns17.hichina.com`
MX	1	`mx.ym.163.com (pri: 10)`
TXT	2	`google-site-verification=4pAZEo2Ck9X_C6C, v=spf1 include:spf.163.com ~all`
SOA	1	`dns17.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)

Analysis

Hierarchy

bbs.81tech.com and www.81tech.com are both subdomains of 81tech.com.

IP Addresses

81tech.com resolves to one IP address: 120.24.179.179.

Other host names, such as 81uav.cn, share IP numbers with 81tech.com.

Name Servers

81tech.com is delegated to two name servers: dns17.hichina.com and dns18.hichina.com.

81tech.com uses the same name servers as several other domains — among them fisheryqs.com, miaopeng.com, autokz.com and two more.

The name servers for 81tech.com are partially shared with other domains like lcza.com, zantools.com and adwin.cn

Hostnames that resolve to 9 IP addresses:

dns17.hichina.com resolves to 39.96.153.40, 39.96.153.60, 47.118.199.200 and 6 other IP addresses.

dns18.hichina.com resolves to 39.96.153.38, 39.96.153.61, 47.118.199.198 and 6 other IP addresses.

Mail Servers

Mail for 81tech.com is handled by a single mail server, mx.ym.163.com.

81tech.com uses an identical mail server configuration to several other domains — among them huapukeji.com, boxin.cn, viknails.com and two more.

81tech.com has at least partial mail server overlap with other domains such as dangan.com, fosoto.com, miningbulletin.com and two more.

These mail servers tend to be used in combination with the mail servers mxbiz1.qq.com and mxbiz2.qq.com.

mx.ym.163.com resolves to a single IP number: 111.124.200.35.