`zhixue.org`

DNSSEC	⚠️ Not signed
A	121.46.248.238^{🇨🇳 SHANGHAITELECOM121.46.248.0/24 Chinanet Shanghai}
NS	`dns21.hichina.com` ⭐
		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`
		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,}
MX	`mxn.mxhichina.com` ⭐
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mxw.mxhichina.com`⁽¹⁰⁾
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`reachsmartdwell.com`
TXT	`v=spf1 include:spf.mxhichina.com -all`
SOA	`dns21.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1775936478

Same first word

zhixue.cn

zhixue.com

zhixue.org

Similar names

xuezhi.com

ixuzhe.com

xuezhi.cn

DNS History

8 records (5 active, 3 former)

●NSdns21.hichina.com2015-08-15 → 2026-04-11 · 2 obs

● 2015-08-15 22:04:14
● 2026-04-11 20:12:52

●NSdns22.hichina.com2015-08-15 → 2026-04-11 · 2 obs

● 2015-08-15 22:04:14
● 2026-04-11 20:12:52

●MXmxn.mxhichina.com2020-11-09 → 2026-04-11 · 2 obs

● 2020-11-09 18:53:46
● 2026-04-11 20:12:52

●MXmxw.mxhichina.com2020-11-09 → 2026-04-11 · 2 obs

● 2020-11-09 18:53:46
● 2026-04-11 20:12:52

○A114.80.116.152017-03-19 → 2017-03-19 · 4 obs

○ 2016-07-11 14:41:38
● 2017-03-19 18:19:38
○ 2020-11-09 18:53:46
○ 2026-04-11 20:12:52

●A121.46.248.2382026-02-23 → 2026-04-11 · 3 obs

○ 2020-11-09 18:53:46
● 2026-02-23 07:36:18
● 2026-04-11 20:12:52

○A121.46.248.2392020-11-09 → 2020-11-09 · 4 obs

○ 2017-03-19 18:19:38
● 2020-11-09 18:53:46
○ 2026-02-23 07:36:18
○ 2026-04-11 20:12:52

○A222.73.176.232015-08-15 → 2016-07-11 · 4 obs

● 2015-08-15 22:04:14
● 2016-07-11 14:41:38
○ 2017-03-19 18:19:38
○ 2026-04-11 20:12:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
zhixue.org	dns21.hichina.com, dns22.hichina.com	-

✅ Authoritative Response

Server:47.118.199.222

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zhixue.org (unsigned zone)

⏱️ Timing

Total: 1249ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.46.248.238`
NS	2	`dns21.hichina.com, dns22.hichina.com`
MX	2	`mxn.mxhichina.com (pri: 5), mxw.mxhichina.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mxhichina.com -all`
SOA	1	`dns21.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

zhixue.org points to a single IP address: 121.46.248.238.

Name Servers

Two name servers dns21.hichina.com and dns22.hichina.com handle the delegation for zhixue.org.

zhixue.org shares the same name server setup as other domains, for example cctvgb.com.cn, amearchery.com, cqftjx.com, czbqdq.com and igptex.com.

zhixue.org at least partially shares name servers with other domains, for example xiongbaba.cn, pgdmc.net, dqlx.com, sxzgb.cn and zones.cn.

these name servers commonly pair with expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers: dns21.hichina.com points to: 2408:4009:501::29, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110; dns22.hichina.com points to: 2408:4009:501::30, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Mail Servers

Two mail servers handle zhixue.org: mxn.mxhichina.com and mxw.mxhichina.com.

zhixue.org shares the same mail server setup as other domains, including shopali.net, pirpye.com, jw-best.com, iberhk.com and qiantangriver.com.

zhixue.org shares at least partially some mail servers with other domains, for instance bjjuding.com, charmshome.com, dzkonline.com, yikaowh.com and jcipo.com.

these mail servers are often used together with mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

Host names with two IP numbers:

mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

Host names with one IP number:

mxw.mxhichina.com points to 47.246.99.195.

zhixue.org - robtex.com

zhixue.org

org